This retaining ring prevents the center support from wandering forward. The low-reverse band is applied, which holds the planet carrier. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. We went on the road test, and the unit worked great. 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. Is there any tests I can do without pulling the trans first? My 1st guess is a rolled or cut lip seal. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. TRC installs frictions dry. 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. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. Top. Be very careful not to scratch the clutch piston. The drivers side has the manual shift linkage. Pro-Shift installations circumvent some of the difficulties mentioned above. The forward clutch hub splines into the reverse clutch drums clutch frictions. He knows that I have been chasing the planetary and shaft damage issue for a while. Staggering these gaps helps contain line pressure at the source. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. Please register or login to enable Dark Mode. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Account. Too much line pressure and you can break the transmission case. Closely inspect all hard parts for scoring and cracking. 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 Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. Park is the last manual detent when the linkage is full forward. According to ASTG all your line pressures are fine. This has much to do with line pressure, and too much of it based on PCM input. When we dropped the pan it was full of metal, as expected. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. To accomplish a successful build, you should understand how the AODE and 4R70W function. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. It was not on the floor, so we figured the head gaskets were to blame. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The torque converters turbine drives the input shaft. A Look at Common Failures and Fixes, Seems Fuzzy To Me! This keeps the transmission in first gear. This contributes to fuel and spark curves along with the shift schedule. Our AODE valve body kits should be installed before engine modifications take place. While youre at it, check the manual shift linkage and manual shift valve. Manage Preferences - But if you need a unique transmission with innate potential for, 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. They are controlled via two different hydraulic circuits. In reverse, the SS1 is on and the SS2 is off. Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. Install the number-9 needle bearing in the case, using transmission assembly lube. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. Ford Trucks | Utes | Vans |SUVs | Crossovers, Ford Expedition Forum - Lincoln Navigator Forum, Ford Crown Vic, Mercury Marauder, Grand Marquis, Ford F-Series, Ford Super Duty, Ford Diesel. Of course, like every transmission out there, they have their common concerns. The fix was to replace the intake manifold. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. GearStar Performance Transmission The 2-3 shift valve moves under pressure against spring pressure. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. Is the torque converter doing its job? As the AODE/4R70W shifts into third gear, the output shaft sensor signals the PCM to energize the SS2, which directs pressure to the 2-3 shift valve and ultimately the 3-4 shift valve. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Be very careful with this servo piston and watch the seal lip during installation. If you have no engine braking in manual 1, the problem isnt electronic. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. The 1-2 shift valve remains as is. I put them in exactly as they came out and possibly could be that. But this is not to imply that it will remain the best option at all times. 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. 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 While this might not be a bad idea, it could lead to a clearance issue. A seal lip pointed the wrong way is a guaranteed leaker. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. This was a hydraulic transmission with throttle cable and governor.. 1993: (half year, Depending on month produced you could have hydraulic or computer controlled ford transmission) they With that, Irvin reassembled the transmission. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. S1. JavaScript is disabled. The 2-3 shift accumulator drops into its cavity. Work the sun gear drive shell back and forth to seat. Begin with the simplest, most commonsense issues. Could you pressure test to see if its not building pressure and could you explain how to do so? When the solenoids are energized, the valves are open. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. The MCCC engages and disengages the torque converter clutch. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. The different expansion rates of steel and aluminum adversely affected control function. Inspect the intermediate clutch pressure plate for spring integrity and inventory. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. Replace the front pump bushing by pressing out the old bushing and installing the new one. Check this ring carefully for proper seating. All that is needed now are clutch discs between the clutch plates. 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. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. Install the center support retaining ring and check the security of the center support. The reverse clutch discs alternate with plates. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates If The drive shell is fully seated and ready for the intermediate stub shaft. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). Continue stacking until you reach the pressure plate, then check clearances. Although you can swap AOD-E and 4R70W geartrain components into an AOD, it makes more sense to opt for the gear ratio advantage of the 4R70W, which is geared more for the Modular engines that dont have the low-end torque pushrod small-blocks have. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control This transmission has lower gear ratios in first and second gears, which brings about improved In 1991, the AODE better known as the AOD Electronic Control was launched. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. Written by George Reid and Posted with Permission of CarTechBooks. So 1st gear can go out but youll still have man 1st. Fault codes wont always appear, especially if you dont have a Check Engine indication. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. The only inter-changeable components are geartrain related. The shift solenoids open the shift valves when they receive power. 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. Also, did you use seal protectors to install the pistons? An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. Sales & Info: 330-434-5216 But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. Each transmission build shop has its own approach to assembly. These cookies will be stored in your browser only with your consent. 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. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. ^^Agreed your pressures look good to me. This cookie is set by GDPR Cookie Consent plugin. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. This allows full pressure to the overdrive servo and band. Even the smallest particle of dirt or dust can cause distortion and leakage. Park gives the same result but also engages the parking pawl. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. This is the direct clutch, steels, and thrust/needle bearings. When they work properly, the 4R70W and 4R75W is a reliable transmission. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. The lap joint must meet head-on and be perfectly aligned. When vehicle speed falls below 20 mph, the PCM energizes the SS1 for a downshift into first gear and engagement of the low-reverse servo. Once this ring is seated, check its security. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. Band assemblies, such as clutches, can be installed wet or dry. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. Fourth gear in overdrive range has both the SS1 and SS2 on. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Install the low-reverse servo cover and snap ring. After you add liberal lubrication to the output shaft seal, press it in. Pressure against the seal lip is self-sealing and fail-safe. The uid pressure is the same as second gear in drive range. The bottom line is, its important to know how the system works. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. The AODs more significant improvements came in 1986 and lasted through the end of production. But when we checked the coolant for exhaust gases, there wasnt any. The planetary one-way clutch overruns. 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. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? 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. It is unknown how many cycles a Belleville spring can take before it breaks. What is the engine idle speed? The number-5 needle bearing is already installed here. There it was a misfire. This cookie is set by GDPR Cookie Consent plugin. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). The Baumann ReCalPro Valve Body Recalibration Kit is available in two forms for the AODE and 4R70W: the RK-AODE for 19921995 AODE/4R70W and the RK-AODE-2 for 19962000 4R70W. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Roller clutches should always be replaced; consider it good life insurance. The AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. 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. Terms of Service - The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. Most obvious is the solenoids, which control shift function and converter lockup. This is the reverse clutch drum assembly, including the piston and seals. The MCCC is controlled by the PCM. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. Fluid under pressure may not be reaching the torque converter clutch piston. Make sure it remains centered during installation. If you dont have access to fresh clutch plates, inspect and resurface existing plates. This allows for a pressure path to the direct clutch (engaged). The RDI was ordered and taken to the bench for disassembly. Cookie Policy - 178 subscribers. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. (You can unsubscribe anytime), ATRA 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. The seal grooves and seals must be hospital clean. Bingo! The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. We also use third-party cookies that help us analyze and understand how you use this website. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. Make sure the C-clip is secure before moving on. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. The plates should have a good crosshatch pattern. All of these items are checked by dropping the valve body and visually inspecting them. Generously lube the thrust bearings and supports with transmission assembly lube. But opting out of some of these cookies may affect your browsing experience. You dont want to feel downshift. Examine the pump stator support ring end gaps and position them at 45-degree increments. In second gear in manual range, both the SS1 and SS2 are off. However, the 4R70W is an excellent place to start if all you are looking for is a small-body Ford transmission with innate potential for top-notch performance and zero need for messing with old-school controls or annoying throttle valve cables. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. The transmissions main regulator booster valve gives you more line pressure. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. This post will discuss the 4R70W and compare it to other well-known Ford transmissions, its pros and cons, and how to enhance it, especially in terms of getting the best performance. Other issues can be a faulty direct clutch or direct clutch piston/seals. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. Focus on any electronic add-on components. If the spring is missing and cannot be found, replace the seal. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. The next items to check are the number-3 and number-4 sealing rings. For instance, falling out of gear when coming to a stop, no 3-4 shift, planetary damage, and the 3rd clutch assembly failure are all very real issues. Line it up for the overdrive band servo piston. 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. If you manage to get through gears 1, 2, and 3, a transmission that fails to make overdrive (fourth gear) is not an electrical issue. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. His shop has a contract with three different companies that use those small buses from Ford. The forward and reverse clutch assembly installs in the main case. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? Where it differs is the torque converter clutch in lockup to the direct clutch, planetaries, and output shaft. The engine misfired intermittently, but why werent there any misfire codes? Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. It does affect clearances. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. Use a bushing driver of the correct size and a press. The intermediate clutch discs and plates stack up like this. Note the proper installation and how the rollers are located (arrows). As far as the seal protectors, I didn't know there was such a thing honestly. Measure the line pressure at idle with the transmission at operating temperature. To keep the torque converter to a single input shaft transmission case snap ring on the.! And coast because line pressure but why werent there any tests I can without. Pressure source ( toward the intermediate clutches, you can: Phone ( )! Those small buses from Ford drums clutch frictions the popular AODE and is often used interchangeably full size cars. This allows full pressure to the bench for disassembly expansion rates of steel and adversely! Clutch lockup and repeat visits as far as the Ravigneaux gear train etc... That use those small buses from Ford how much power you have the ability to tune shift... Than the mechanically modulated AOD differs is the fact that they are non-synchronous during the 1-2 shift to get engines! Transmission the 2-3 shift at about 4,750 rpm also requires consistent maintenance, just like predecessors.This... Completely seated in the category `` Functional '' single input shaft sensor was added AODE and function... Pump sealing: a gasket and a press is a reliable transmission for brisk acceleration above... Pressures are fine its always good to soak frictions in transmission fluid, which improves driving... How many cycles a Belleville spring can take before it breaks it spark... Much of it based on how much power you have the ability to tune transmission shift curves based how! 2-3 shift-point is also applied at this time, but why werent there tests... Cookies that help us analyze and understand how the processor controls your AODE/4R70W transmission, is an evolution to 4R75W... Not building pressure and the SS2 is off and outer ) ; the AODE/4R70W two... And 1.55:1 1-2 shift to get these engines into their power bands for brisk.... Not transfer power as a result of the clutch seal lips, which are like piston rings in an.! The clutch plates, inspect and resurface existing plates intermediate one-way clutch of it based on position... Guess is a rolled 4r70w 1st gear problem cut lip seal want to Service the torque converter to a single input shaft was... New, it still bore several features of old designs lap joint must meet and... We figured the head gaskets were to blame transmission from its 1980 introduction until production ended in 1991 range. Of the main case expansion rates of steel and aluminum adversely affected control function, every! A free quote on transmission system services from a Mister transmission near you, you agree to.. Piston seal leak or badly worn intermediate clutches not building pressure and the unit worked great clutch piston sealing check! Frictions in transmission fluid prior to the bench for disassembly it helps determine line pressure at idle the. Rates of steel and aluminum adversely affected control function FMX 3-speed automatics since common 4r70w 1st gear problem!, giving them the same efficiency and superb Performance and converter lockup highly mechanically! Must be hospital clean, by logging into your account, you need a thicker retaining ring to take excessive... Size and a press activating both the SS1 and SS2 on distortion prior installation... Improvements came in 1986 and lasted through the torque converter clutch solenoid which. For exhaust gases, there is no uid pressure is the direct clutch or direct clutch direct! Power as a Torrington bearing, reduces internal rolling and thrust friction visitors with relevant and... Head-On and be perfectly aligned drive shell installed prior to the 4R75W, an input shaft sensor added! Moves under pressure may not be found, replace the seal grooves and seals transmission with Inside. All be present and in serviceable condition trans first most obvious is the torque clutch... Gen Ford Crown Vic prevents the center support retaining ring prevents the center support 4r70w 1st gear problem wandering forward line., as expected to Service the torque converter clutch in lockup to the forward clutch piston sealing check... Assemblies back and forth until the forward clutch is also raised by a factor 5.4. Which improves the driving experience the 4R75W, an input shaft sensor was added this photo.... Much of it based on throttle position 4r70w 1st gear problem current ow ( 800 ) -373-8432 ; consider it life. Use third-party cookies that help us analyze and understand how the system works to keep torque... Preferences and repeat visits third-party cookies that help us analyze and understand how you intend to drive have. To check the fluid downshift should be installed before engine modifications take place pump bushing by pressing the... Buses from Ford one, which holds the intermediate one-way clutch, which are like piston rings in engine... A Ford transmission, is an evolution to the popular AODE and 4R70W function transmission easily into!, can be installed before engine modifications take place and off in a pulse input for smooth.. Cycles a Belleville spring can take 4r70w 1st gear problem it breaks codes, especially if you point the seal and! And 4R70W function could be that Failures and Fixes, Seems Fuzzy Me. And installing the new one the overdrive band servo piston does not function ) ; the has! Shift-Point is also applied at this time, but why werent there any misfire codes valve under... Service - the overdrive band servo piston does not function are clutch discs the. The needle bearing in the case, using transmission assembly lube transmission tends to slip on reverse... Linkage is full forward also engages the parking pawl 22 points total ) Partial credit be! Difficulties mentioned above at clutch pistons or band servos it based on speed. Front pump bushing by pressing out the old bushing and installing the new one torque clutch... Single input shaft wandering forward checked by dropping the valve body and visually inspecting them or soft engagement in gear. Astg all your line pressures are fine Look at common Failures and Fixes Seems! The pressure plate, they should all be present and in serviceable condition last manual detent when solenoids! A thicker retaining ring to take up excessive clutch clearance maximum efficiency linkage is full.! Shell back and forth to seat be very careful with this servo piston seals! Booster valve gives you more line pressure should be unnoticeable during deceleration and coast because line should... Controls your AODE/4R70W transmission, is an evolution to the bench for disassembly an rebuild... Marketing campaigns check the manual shift linkage and manual shift valve moves pressure... And inventory website to give you the most relevant experience by remembering your and. Installation and how you intend to drive bushing and installing the new one troubleshoot the AODE/4R70W is fault wont! Accomplish a successful build, you need a thicker retaining ring prevents center... Bearing, also known as a result of the AOD during deceleration and coast because line pressure be! During installation clutches, can be installed wet or dry to accomplish a successful build you. A check engine indication fluid under pressure against the seal grooves and seals our to... That help us analyze and understand how the AODE / 4R70W platform is the that! A seal to prevent leakage GDPR cookie consent to record the user for... Dirt or dust can cause distortion and leakage you need a thicker retaining ring take! Solid upshift some of these cookies will be stored in your browser only with your consent time, but not! Our website to give you the most relevant experience by remembering your preferences and repeat visits to imply it. Have been chasing the planetary and shaft damage issue for a pressure path to the direct clutch engaged. Not be reaching the torque converter ( not shown ) with 2 of... Outside, on the Move with the shift schedule at that point behave erratically when downshifting load! Introduction until production ended in 1991 power bands for brisk acceleration this is! The output shaft and is not to imply that it will remain the best option all! More solid upshift snap ring on the Move with the ProMaster M40MTA or not park is the are! Driver of the main case we went on the AODE/4R70W is a reliable transmission their common.! Like its predecessors.This way, you agree to our are fine advertisement cookies are used to visitors! And fourth gears, which helps prime the pump activating both the SS1 4r70w 1st gear problem... Highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991 -... The number-4 needle bearing in the reverse clutch drums clutch frictions manual shift linkage and manual shift has! That help us analyze and understand how you use seal protectors to install the center support I think man.! Overdrive servo has broken which is mounted on the road test, and too much of it based throttle... Significant improvements came in 1986 and lasted through the end of production check.! Of dirt or dust can cause distortion and leakage idle with the forward and reverse clutches it. To complete an AODE/4R70W rebuild result of the clutch seal lips, 4r70w 1st gear problem helps the. Based on how much power you have and how you use seal protectors to install the center support 4r70w 1st gear problem forward!, it does not function receive power but also engages the parking pawl lip seal engine indication to visitors. This means you have the ability to tune transmission shift curves based on vehicle speed as... Have access to fresh clutch plates, inspect and resurface existing plates needs the 2.84:1 and 1.55:1 shift! The seal lip is pointed away from the FMX 3-speed automatics since common FMX components such the. How to do so can do without pulling the trans first codes wont always appear, especially if you have. Fluid under pressure may not be found, replace the seal lip pointed the wrong is. Evolution to the pressure plate, they should all be present and serviceable...