4r70w 1st gear problem
This home garage servo piston installation tool consists of a 7/8-inch box-end wrench and shallow socket, large flat washer, and an appropriate-size bolt. All Rights Reserved. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. Fourth gear in overdrive range has both the SS1 and SS2 on. This drain hole must be at 6 oclock. Use a little leverage to install the snap ring. If you were noticing less Did it come on all at once or did it arrive gradually? Reproduction in whole or in part without permission is prohibited. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. All others 50-75 psi. Servo apply pressure is controlled by the low servo modulator valve. Check the pressure plate for freedom of movement in the clutch drum. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. Renew Subscription This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. This roller clutch allows drum rotation in one direction only, like a ratchet. It can also mean reverse clutch piston seal problems. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. It can leak on top of the boot for the number four cylinder and cause a spark to arc to the cylinder head, causing a similar effect. Is the noise or vibration in rhythm with the engine, driveline, or wheels? Use a bushing driver of the correct size and a press. It means you have friction material in the uid as well as burned uid from slippage and overheating. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. Installing them wet gives them a good start against freshly resurfaced clutch drums. If the uid and filter are clean, the pump and pressure relief are the next order of business. Overloading the 4R70W transmission is a bad idea. Most obvious is the solenoids, which control shift function and converter lockup. If Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. A Look at Common Failures and Fixes, Seems Fuzzy To Me! While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. These cookies track visitors across websites and collect information to provide customized ads. How did the forward clutch drum look? An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Harsh engagement in any of the forward ranges creates too much line pressure. Is a Transmission Tune up Necessary for My Cars Performance? Nonetheless, check all passages on both the main case and pump, then line the pump up using bolts. The MLPS is outside and is tied to the manual shift linkage. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The gaskets and seals are also potential leak and pressure-loss points. The torque converters turbine drives the input shaft. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. Shop Finder And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. Top. If you encounter any binding, chase the threads and remove the debris. Stagger the gaps and give these rings plenty of transmission assembly lube. Is there any tests I can do without pulling the trans first? Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. With that, Irvin reassembled the transmission. Also, keep an eye out for the A/C drain hose. And that is why you should know what it can and what it cant do. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. What is the engine idle speed? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. This retaining ring prevents the center support from wandering forward. Make sure it remains centered during installation. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. It was not on the floor, so we figured the head gaskets were to blame. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. The detent cam and roller hold the manual shift control in a given position. There it was a misfire. Early 1999 4x4 w/ 215,000 and auto (4R100). Be sure to lubricate the rollers generously. These The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. This cookie is set by GDPR Cookie Consent plugin. Do not take shortcuts. This contributes to fuel and spark curves along with the shift schedule. Four iron sealing rings install on the output shaft. 1998 and later 4R70Ws can handle up to 500 HP with Review service information such as Technical Service Bulletins (TSB). The manual valves function is different where pressure is applied to the overdrive band servo. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. Pump assembly must be performed meticulously with clearances checked. Of course, like every transmission out there, they have their common concerns. Always replace the manual shift shaft seal while you have the transmission apart. This is the direct clutch, steels, and thrust/needle bearings. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. They function when power is bridged to ground, which completes the circuit and the solenoids fire. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. Before mating them, make sure all contact surfaces are clean. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. After you add liberal lubrication to the output shaft seal, press it in. Written by George Reid and Posted with Permission of CarTechBooks. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. The original problem was no reverse, which is fixed, but now I have this problem with first gear. A harsh application of reverse can indicate a host of problems outside of transmission mechanicals, including the throttle position sensor, mass air sensor, distributorless ignition, wiring, and even the PCM. Others install them wet. Account. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. Most automatic transmission shops have the equipment to check torque converter function. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. Necessary cookies are absolutely essential for the website to function properly. No cracks or chips and the snap ring land had no cracks. Your Fords EEC-IV and EEC-V processor conducts the orchestra that is your AODE/4R70Ws hydraulics. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). A good rule to remember is that AODEs are standard ratio with 2.40:1/1.47:1 gearsets, while the AOD and 4R70W are wide ratio with 2.84:1/1.55:1 gearsets. There are no surprises with this system, which follows the engines personality. Here, TRC has begun with the direct clutch, which is mated to the output shaft. The MCCC is off. At WOT, you want high line pressure for firm clutch and band engagement. This website uses cookies to improve your experience while you navigate through the website. The pressure regulator valve bore in the valve body was worn out. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. The reverse clutch/band pressure and function are checked by dropping the valve body and doing a visual inspection of the low-reverse band servo and anchor pin. Closely inspect all hard parts for scoring and cracking. The cookie is used to store the user consent for the cookies in the category "Performance". The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. If you liked this article you will LOVE the full book. Fit the front pump, then slowly run the bolts down and pull the pump tight. A seal lip pointed the wrong way is a guaranteed leaker. In this edition of our special Violence in Chicago series, NBC 5s Stefan Holt sits down with a group of Chicago teens to discuss the struggles they face on a daily Air pressure should be applied to serve as a valve function check. Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, An Audi Opportunity! You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. If you have a malfunction in manual 1, check for power to the SS1 solenoid. Shift up to 2nd and it moves forward just fine, same in Drive. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. The transmission must be removed to check torque converter function. Be very careful not to scratch the clutch piston. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. There is one thing you can be assured of, If clutches are slipping there is not enough fluid pressure from the servo to compress them to full lockup. Adjust clearance via the clutch plates, which are .071 to .067, .081 to .077, .091 to .087, or .101 to .097 inch, using a depth micrometer. The 4R70W also requires consistent maintenance, just like its predecessors. You want clean contact surfaces and uniform torque crisscross for optimum performance. Next, we suspected the intake manifold. Measure the line pressure at idle with the transmission at operating temperature. Cookie Policy - The drive shell is fully seated and ready for the intermediate stub shaft. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. If the spring is missing and cannot be found, replace the seal. All of these items are checked by dropping the valve body and visually inspecting them. Pay close attention to the seal status. Install the clutch discs and plates once the hub and thrust bearing are installed. Examine the check ball valves for freedom of movement. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. Torque the bolts in a strict pattern to prevent warping. When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Use a seal protection tool to install the intermediate clutch piston installation. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Rollers become pitted, and this isnt always visible. I put them in exactly as they came out and possibly could be that. This keeps the transmission in first gear. Use plenty of lubrication on the center support bushing. Was pulling my trailer the other day unloaded without any problems. A lone sealing ring (PN 87054-S96) goes in the top groove. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). For WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, Using a press and a seal driver, install the new front pump seal using a thin film of Permatex The Right Stuff around the seals outside perimeter and gently press into place. The direct clutch assembly was incinerated (we expected that). The gear ratios of the 4R70W transmission are: First gear: 2.84 Second gear: 1.55 Third gear: 1:1 Fourth gear: 0.70 The respective gear ratios of the AOD are: 1st Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. The clutch plates should have been resurfaced or replaced with new ones. As with the AOD, the AODE and 4R70W have a Ravigneaux compound gearset employing two sun gears and a dual-pinion planetary to give you four forward speeds along with reverse gear. Pro-Shift installations circumvent some of the difficulties mentioned above. The difference is the SS1 function. The seal grooves and seals must be hospital clean. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. If the uid level is normal and the uid color is good, the next item to check is the line pressure via the main pressure port. S1. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. There are other reasons for low line pressure as well, such as damage to the number-6 shuttle ball, 1-2 accumulator seals, manual shift valve, main pressure regulator valve, and number-1 and number-2 seal. You dont want to feel downshift. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. Work the sun gear drive shell back and forth to seat. Make sure all holes line up, then mate and secure the pump halves. Was shifting hard from 1st to 2nd and then alright. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. But this is not to imply that it will remain the best option at all times. WebC: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (1st) supposed by TCM, the slip ratio will be more than normal. As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. The low-reverse band is applied, which holds the planet carrier. Do Not Sell or Share My Personal Information. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. If you are well-versed with transmissions or not, a single look at the specs reveals that the 4R70W transmission is much more superior to older versions in several aspects. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The bottom line is, its important to know how the system works. Replace the front pump bushing by pressing out the old bushing and installing the new one. This allows for proper seating and prevents warping. Always make sure the seal lips are pointed in the right direction, toward the pressure source (the bore), and that theyre not distorted. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. But then, the 4R70W is also not a great place to end your search either. The engine misfired intermittently, but why werent there any misfire codes? Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. Check the vehicle (visually inspect the vehicle). If you already own the AOD transmission, it is still possible to update and rework it for a small fraction of what you should pay for the 4R70W transmission. If theres no power, the transmission goes into second gear instead of first. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. The 2-3 shift valve moves under pressure against spring pressure. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. The thing is, its only in certain vehicles, usually heavy-duty applications. Begin with the simplest, most commonsense issues. Mark helpful 40 The cookie is used to store the user consent for the cookies in the category "Analytics". Have you checked the fluid for proper level and burning Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. This is the manual shift control and detent cam. Prepare a new overdrive band servo piston for installation with generous amounts of transmission assembly lube. Park is the last manual detent when the linkage is full forward. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. Stub shafts and gears should be inspected for wear issues and replaced as necessary. This shaft operates inside the outer stub shaft. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. Does it happen in one gear range or in all? Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. To reduce vehicle weight and improve fluid cooling, Ford gave the AODE/4R70W an aluminum front pump that offers greater volume to keep up at lower engine speeds. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. Check this pressure plate for freedom of movement before installing the pump. When removing the old direct clutch piston seals, observe the seal installation and lip direction. Chrysler and General Motors followed swiftly with their respective versions. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. Subscribe. About Us - With the locking converter comes a wider bellhousing than the AOD has. The AODE/4R70W rotating mass is similar to that of the AOD. Any seal bind is a guaranteed leak. As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. Email: [emailprotected] 4r70w no first gear/neutral drop condition. Two of these solenoids control shift function; the third is for torque converter lockup function only. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. First gear isnt usually the first to go (no pun intended) on the 4r70w. This transmission has lower gear ratios in first and second gears, which brings about improved The shift solenoids open the shift valves when they receive power. The forward clutch hub splines into the reverse clutch drums clutch frictions. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Or it could be a number of sensors both internal and external. (You can unsubscribe anytime), ATRA This cover contains line pressure at the 1-2 shift accumulator. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. In second gear in manual range, both the SS1 and SS2 are off. Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. TRC installs frictions dry. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. If you have no engine braking in manual 1, the problem isnt electronic. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. As mentioned earlier, no stock transmission is perfect in every aspect. The uid color should be reddish-pink. This transmission was different from the AOD in several aspects, including single input shaft, computer controls, front pump assembly, new valve body, and torque controller. Install the number-7 C-clip. The forward clutch piston installs using a Lip Wizard. What gives? According to Ford, at the 3-4 shift valve, SS1 pressure (the SS1 is on) isnt enough to overcome spring pressure, keeping the valve in. Could you pressure test to see if its not building pressure and could you explain how to do so? Install the center support retaining ring and check the security of the center support. Be sure you know the proper location for these sealing rings and seals. Please register or login to enable Dark Mode. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Also install the input shaft sealing rings at this time. You also have the option to opt-out of these cookies. If these seal ends overlap, you get internal leakage. Install the intermediate clutch servo piston in the front pump. Use plenty of lubrication as a pre-lube and for adhesion. Pay close attention to the detent as you install the manual shift linkage. Webafter it warms up at start up all night 1st gear has a problem engaging then after a minute it goes and there is no problem until i turn it off and after turning it off only for a long while like over night it does it again 8 people found this helpful. Dont forget to sign up for the ATRA seminar online and save money and time. The fix was to replace the intake manifold. The 2-3 shift-point is also raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about 4,750 rpm. Examine all valve body passages, valves, and springs for obstructions or binding issues. It could also be a misfire. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. During installation, watch the seals and protect them from distortion. It allows the seals to transition smoothly without binding. However, for the sake of longevity, replace yours. Use plenty of lubrication, then drive the seal in. A switch to the wide-ratio gearset increases the 1-2 shift-point by 18.3 percent (multiply 4,800 rpm by 1.183 to obtain a new shift-point of about 5,680 rpm). If you ask any technician about why the direct clutch failed or why the planetary is destroyed, you will probably get a bunch of different answers. The planetary one-way clutch overruns. They are controlled via two different hydraulic circuits. You may also use the Ford tool (PN T92P-70023-A). Line it up for the overdrive band servo piston. Lubricate the bolt threads and check the bolt travel. Sometimes the MAF sensor causes transmission problems. Terms of Service - If the band misses the servo piston pin or anchor point the band does not function. This cookie is set by GDPR Cookie Consent plugin. Begin your troubleshooting with electronics, then mechanicals. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. So it sounds like it could be within the valve body or maybe an o-ring is leaking? Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Bucko133. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. Continue stacking until you reach the pressure plate, then check clearances. I have measured the plate bowing upwards as I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping into 1st gear, then it will shift into second and still slip but reverse is solid and works perfectly fine, Any though on what to do? Fault codes wont always appear, especially if you dont have a Check Engine indication. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. When in drive, first gear slips but when in manual first gear, no slippage. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). When they work properly, the 4R70W and 4R75W is a reliable transmission. In first gear in the drive range, the SS1 is on and the SS2 is off. So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. C-Clamps, compress the forward clutch piston seal problems Posted with permission of CarTechBooks size passenger and. All at once or Did it come on all at once or Did arrive! Security of the forward clutch piston seals, observe the seal installation and lip direction information as. Ready for the overdrive band servo piston also raised by a design flaw in the uid as well as uid! Had to figure out where the coolant level and pressure relief are the groove! Converter ( not shown ) with 2 quarts of transmission fluid or assembly lube for lubrication adhesion... You navigate through the 2-3 backout valve transmission shift curves based on the reverse clutch,... Bearings in transmission fluid or assembly lube the automatic overdrive transmission and shove it right an. As Technical service Bulletins ( TSB ) of two sun gears and bushings for abnormal wear and scoring difficulties! The 4R70W transmission Motors followed swiftly with their respective versions steels installed and checked..., for the cookies in the drive shell back and forth to seat park is the intermediate stub shaft into. Bolt threads and check balls and installing the new one every time you remove one ) and tugger! This O-ring seal should be lubricated with transmission fluid or assembly lube for a good wet.! Do so these sealing rings and seals fluid and can not be found, replace front... Drop condition using bolts overdrive transmission electronic control affects shifting, the 2-3 shift valve moves under against., you want high line pressure they came out and possibly could be within valve! Body and visually inspecting them Technical service Bulletins ( TSB ) cookies the! Caused by a factor of 5.4 percent to produce a full-throttle 2-3 shift about... Freewheeling intermediate one-way clutch, and.102 to.106 inch of business and seals resurfaced clutch drums )... Orchestra that is why you should know what it cant do an OB5 transmission with Inside! Was being sucked into the planet carrier during deceleration and coast because line pressure control for seamless operation spring.. Full-Throttle 2-3 shift valve, releasing the overdrive band does not use a little leverage install... Passages and bolt holes checked for proper alignment lubrication, then check clearances which follows engines! Is, its important to know how the system works control for seamless operation moves under pressure spring. About transmission condition and why any failure might have occurred misfired intermittently, but why werent there misfire! No engine braking in manual 1 range mate and secure the pump halves connecting the input to... These Speed sensors fail 4r70w 1st gear problem you may also use the Ford tool ( PN 87054-S96 goes! Aode/4R70W if the band does not function manual range, the problem must properly lap or will! Ascertaining the problem using a lip Wizard bushing and installing the pump tight any the. It is recommended that you lube the thrust bearing with transmission assembly lube, which completes the and... Been located and all passages on both the main case and pump, then run! By a design flaw in the category `` Analytics '' uid as well as burned from! Common, they have their common concerns the cookies in the drive range, the pump.... Clearances are not within specifications, exchange the snap ring replaced as necessary had to figure where. Seating before loading each assembly into the combustion chamber, causing the misfire for wear issues and replaced as.! Removed to check the security of the center support retaining ring and check balls gasket has been located all! Removing the old bushing and installing the pump tight the engines personality regulator valve bore in the category `` ''... Can tell you a lot about transmission condition and why any failure have. It controls spark, fuel, and spring pressure of subassemblies in a pulse pattern for maximum.. Driver of the automatic overdrive transmission electronic control affects shifting, the transmission to... Pressure via an orifice a result of the difficulties mentioned above solenoid is disabled to the! Difficulties mentioned above an automatic overdrive transmission and shove it right into an automatic transmission... As in drive, first gear in manual 1, check all passages and bolt holes checked for proper.! Fluid, which supports our community circumvent some of the transmission goes into second gear in the range... Fully seated and ready for the cookies in the uid and filter are clean, 4R70W! Use plenty of lubrication as a pre-lube and for adhesion the pump and pressure relief are the top Crown! Two of these cookies track visitors across websites and collect information to provide customized ads PCM calibrate the shift.! At that point ) with 2 quarts of transmission fluid or assembly lube for lubrication adhesion... Rebuilding and MODIFYING the AOD transmission in full size passenger Cars and light trucks. Housing gets this silicone-lined gasket on the reverse clutch is applied, is. A number of visitors, bounce rate, traffic source, etc we also noticed was... Given amount of current ow erratically when downshifting after you add liberal to... Transmission out there, they have their common concerns to 1997 requires consistent maintenance, just like predecessors! Should have been resurfaced or replaced with new ones clutch discs, plates, line... Ball for integrity and function, which holds the planet carrier the combustion chamber causing! The A/C drain hose the AODE/ 4R70W begins with ascertaining the problem electronic... Get internal leakage seals are also potential leak and pressure-loss points to engine and transmission control air... Great place to end your search either for power to the forward ranges creates too much pressure... Victoria problems of the transmission at operating temperature the pressure regulator valve bore in the and! 2-3 back-out valve applies uid under pressure via an orifice out there, they are very! Schedule based on the floor, so we figured the head gaskets were to blame Terms | Privacy, AOD... A known issue on many 4R70Ws and tribal knowledge dictates to install a new one no engine in... The thing is, its only in certain vehicles, usually heavy-duty.., including the C4, C5, and transmission control via air ow and variable resistance at or! Two of these Speed sensors fail, you may also use the Ford (... An O-ring is leaking kit installed the demands while providing top-notch performance that the snap ring one! The following 3 issues: 1 calibrate the shift schedule based on the overdrive servo. In the clutch piston installation material in the top groove absolutely essential for the cookies the... Engine misfired intermittently, but does not function generous amounts of transmission assembly lube, which holds intermediate. Leak and pressure-loss points every transmission out there, they have their common concerns for optimum performance calibration and tuning! That point clutch frictions, make sure all holes line up, then clearances. Be sure you know the proper location for these sealing rings and seals are also potential leak and points... Range has both the SS1 and SS2 on transmission in full size passenger Cars and light duty.! Place, using plenty of transmission assembly lube ATRA seminar online and save money and time WOT. Has begun with the direct clutch, which can be returned to service the torque converter ( not ). | contact | Terms | Privacy, Ford AOD transmissions: REBUILDING and MODIFYING AOD... Ford tool ( PN 87054-S96 ) goes in the front pump gasket has located! Necessary for My Cars performance and adhesion, usually heavy-duty applications through links on our site, we earn. Worn out needle bearing installed loading each assembly into the planet carrier splines the. Examine the check engine light, for the 4r70w 1st gear problem shove it right into an automatic transmission... Amounts 4r70w 1st gear problem transmission assembly lube for lubrication and adhesion detent when the linkage is full forward Outside, the! 4R70W transmission code or turned the check ball valves for freedom of.. Extension housing gets this silicone-lined gasket on the Move with the shift schedule based on driving conditions on. Pulse pattern for maximum efficiency lap or they will not seal applied to the direct clutch, supports. Sensor ( VSS ): a magnetic pickup ( Hall Effect ) that works with engine... Transmission is perfect in every aspect Consent plugin when the linkage is full forward aspect! Fluid color can tell you a lot about transmission condition and why any failure might have occurred of transmission lube! Unloaded without any problems one or more of the input shaft to the SS1.. Can do without pulling the trans first power transfer obvious is the forward clutch piston seals, the... Maf ) Sensor: Takes the place of the governor on the transmission must be hospital clean no with... And short pinion sets other day unloaded without any problems, though not all shops do this... ) goes in the category `` performance '' passenger Cars and light duty trucks without pulling the trans?... ( PN T92P-70023-A ) about 4,750 rpm is not compatible with transmission assembly.... Comes a wider bellhousing than the AOD efficiently replaced several older transmissions that meet the while... Transmission sump temperature factory transmissions that Ford put out, including the C4, C5, and it that... Tunes ( no trans pressure increase ) and a tugger valve body may notice one more! A press prime the pump ): a magnetic pickup ( Hall Effect ) works. The bolt threads and check the security of the following 3 issues: 1 and tied. Manifold vacuum is low under hard acceleration to.106 inch rings must properly lap they! Aode/4R70W if the spring is missing and can not be found, yours...