Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. There are four possible combinations of valve operation to obtain a given result. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. 2. It has three alignment holes (slots). Make sure the C-clip is secure before moving on. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. Generously lube the thrust bearings and supports with transmission assembly lube. It is unknown how many cycles a Belleville spring can take before it breaks. Check this pressure plate for freedom of movement before installing the pump. What is the engine idle speed? With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. All bearing surfaces should have been lubricated. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. Install the low-reverse band servo piston return spring. If you have no engine braking in manual 1, the problem isnt electronic. TRC installs frictions dry. Check the uid level and line pressure. Too much line pressure and you can break the transmission case. Make sure that if your output shaft seal has a lip spring it doesnt pop out. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. The cookies is used to store the user consent for the cookies in the category "Necessary". Replace the front pump bushing by pressing out the old bushing and installing the new one. This allows for proper seating and prevents warping. Does it happen in one gear range or in all? The MCCC is off (on the torque converter, no lockup). 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. It does affect clearances. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. A lone sealing ring (PN 87054-S96) goes in the top groove. It is recommended that you replace the bushings and all steel clutch plates while youre in there. Members Generously lube this assembly and install it, along with the cover. If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. Torque the extension housing bolts to 16 to 20 ft-lbs. Change Your Address, Yes, I would like to receive emails from Gears Magazine. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. 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. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. Servo apply pressure is controlled by the low servo modulator valve. There should be nine springs in serviceable condition free of distortion. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. 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When the solenoids are energized, the valves are open. 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. Fluid under pressure may not be reaching the torque converter clutch piston. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. For a better experience, please enable JavaScript in your browser before proceeding. Or it could be a number of sensors both internal and external. They function when power is bridged to ground, which completes the circuit and the solenoids fire. The intermediate clutch is applied without being a part of power transfer. The cookie is used to store the user consent for the cookies in the category "Other. This website uses cookies to improve your experience while you navigate through the website. The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). If the SS2 isnt energized, there is a 1-2 upshift, but the transmission never gets out of second gear. Make sure it remains centered during installation. Privacy Statement - There is a pronounced limit to its power and torque, and overloading it could mess things up. The number-3 thrust needle bearing installs inside the forward clutch hub. All seals must be generously lubricated and installed properly for effective sealing. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. Shop Finder Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Top. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. 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. Chrysler and General Motors followed swiftly with their respective versions. The forward clutch piston installs using a Lip Wizard. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. Cages become damaged and at times this is even harder to see. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. WebFord 4R70W/4R75W Transmission Information. It could also be a misfire. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. Use a little leverage to install the snap ring. Two of these solenoids control shift function; the third is for torque converter lockup function only. This cover contains line pressure at the 1-2 shift accumulator. Apply uniform pressure to the piston while feeling for a smooth transition. Remove the pan and inspect the filter. The MCCC is controlled by the PCM. 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. Advertising - This allows full pressure to the overdrive servo and band. During this time, the coolant pressure went from 17 psi to 0. Darkness indicates contamination and overheating. Fit the front pump, then slowly run the bolts down and pull the pump tight. Cant get reverse gear? 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Make sure you have plenty of lube and smooth piston travel. Privacy Policy. Did you remove the valve body when you fixed your other problem? Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. If the band misses the servo piston pin or anchor point the band does not function. If it is brown or otherwise dark in color that is a clue. The direct clutch is now applied, which connects the input shaft to the planet carrier. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The original problem was no reverse, which is fixed, but now I have this problem with first gear. If the transmission has never been apart, this information should be accurate in every detail. All of these items are checked by dropping the valve body and visually inspecting them. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. But opting out of some of these cookies may affect your browsing experience. The MLPS is outside and is tied to the manual shift linkage. The gaskets and seals are also potential leak and pressure-loss points. Apply transmission assembly lube on all contact surfaces. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. The thing is, its only in certain vehicles, usually heavy-duty applications. This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. Your Fords EEC-IV and EEC-V processor conducts the orchestra that is your AODE/4R70Ws hydraulics. 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. 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. This drain hole must be at 6 oclock. Fourth gear in overdrive range has both the SS1 and SS2 on. If you liked this article you will LOVE the full book. And that is why you should know what it can and what it cant do. That's my plan of attack, thanks for the help. The planetary support assembly fits into the main case. 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. Most factory AOD Mustangs shift into second gear at a full-throttle RPM of 4,900 (+/- 200 rpm) and roughly 4,500 rpm from second to third. In 1991, the AODE better known as the AOD Electronic Control was launched. Review service information such as Technical Service Bulletins (TSB). Others install them wet. The valve body is responsible for controlling the flow of fluid WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. Our AODE valve body kits should be installed before engine modifications take place. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Pick-up not installed correctly,clogged filter,low fluid. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). This allows for a pressure path to the direct clutch (engaged). Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. Four iron sealing rings install on the output shaft. Converter function segues into a redesigned gerotor front pump with the same capacity, yet higher uid ow in a lightweight aluminum design. At WOT, you want high line pressure for firm clutch and band engagement. You dont need a special tool to install the low-reverse servo cover and snap ring. Email info@mistertransmission.com. Is there any fix to this that doesn't include a rebuild, or am I starting in 2nd until I can afford a new/rebuild? Does the engine stall when the transmission selector is placed in gear? The torque converters turbine drives the input shaft. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Cart Lose the spring and you will have slip-yoke leakage. Reproduction in whole or in part without permission is prohibited. Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. Written by George Reid and Posted with Permission of CarTechBooks. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. The direct drum was burnt, as well. It allows the seals to transition smoothly without binding. Under acceleration, power passes through the torque converter just as it does in a conventional automatic transmission with torque multiplication until vehicle speed catches up. The transmission must be removed to check torque converter function. Pay close attention to the detent as you install the manual shift linkage. I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. Next, we suspected the intake manifold. The cookie is used to store the user consent for the cookies in the category "Performance". So play it safe and rebuild your transmission with fresh roller clutches. The uid color should be reddish-pink. 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. My 1st guess is a rolled or cut lip seal. were also part of its components. Diagnose the problem (accurately diagnose). No 1st Gear Been having issues with the truck accelerating slowly. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. Alternate the forward clutch plates with clutch friction discs. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. You dont want to feel downshift. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. The uid pressure is the same as second gear in drive range. When they work properly, the 4R70W and 4R75W is a reliable transmission. 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. This is the natural color version (.085 to .089 inch). Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. We went on the road test, and the unit worked great. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. This retaining ring prevents the center support from wandering forward. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. About Us - As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. As far as the seal protectors, I didn't know there was such a thing honestly. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. Install a new overdrive band and anchor it to the pin. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. You also have the option to opt-out of these cookies. Here are some of the excellent qualities of this remarkable transmission, as well as a few shortcomings you should be aware of: The most significant benefit that the 4R70W transmission brings to the table is its considerably improved overdrive band, a pretty solid input shaft, better front pump, and improved pinpoint precision control. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Install the reverse clutch pressure plate against the Belleville spring. The lip needs to face the fluid. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. The seal grooves and seals must be hospital clean. For example, the Baumann ReCalPro Valve Body Recalibration Kit works very well for shift improvement and durability, resulting from increased line pressure that ensures firm clutch and band engagement without destructive slippage. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. A Look at Common Failures and Fixes, Seems Fuzzy To Me! This is the manual shift control and detent cam. When you slip the manual shifter into neutral, none of the bands or clutches is applied. Also, did you use seal protectors to install the pistons? Terms of Service - Install the forward clutch piston seals. Install the forward clutch frictions alternately between the steels. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. 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. Install the intermediate clutch servo piston in the front pump. Email: [emailprotected] 2001 Expedition, 4.6L engine, 4R70W transmission. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. To better tie the engine, vehicle, and transmission functions together, Ford went to an output shaft speed sensor and manual shift lever sensor, along with a multiplex electrical connector to simplify service. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. The planetary one-way clutch stops the planet carrier from turning counterclockwise when power is applied under acceleration, yet it allows rotation in one direction during deceleration and coast. While this might not be a bad idea, it could lead to a clearance issue. The intermediate stub shaft splines into the planet carrier. If clutch and servo are an issue then internal work is needed. Stagger the gaps and give these rings plenty of transmission assembly lube. There it was a misfire. The fluid is brand new and at the correct level. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. 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. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. 4r70w no first gear/neutral drop condition. 1998 and later 4R70Ws can handle up to 500 HP with Is a Transmission Tune up Necessary for My Cars Performance? 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. 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. In final drive, however, power passes through the unit differently. In second gear in drive range, both the SS1 and SS2 are off. These cookies will be stored in your browser only with your consent. This is the direct clutch, steels, and thrust/needle bearings. 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. TIPM Problems! When you build, use new Torringtons if possible. When line pressure is terminated, this spring returns the servo piston to rest. 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 AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. If they are heat cracked or bluish, do not reuse them. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Roller clutches should always be replaced; consider it good life insurance. Overloading the 4R70W transmission is a bad idea. Did the problem arise after transmission service or part replacement? Is it a noise or vibration? It can also mean reverse clutch piston seal problems. Click the button below and we will send you an exclusive deal on this book. 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? Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. Have you checked the fluid for proper level and burning 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. The RDI was ordered and taken to the bench for disassembly. The pressure regulator valve bore in the valve body was worn out. Staggering the gaps helps the sealing rings hold pressure. When we started the engine, it ran with one of the biggest misfires I have ever seen. They should rattle when you shake the clutch and shaft assembly. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. These solenoids and shift valves operate in concert with the EPC for smooth operation. If you have a malfunction in manual 1, check for power to the SS1 solenoid. I would start by removing the valve body and inspecing it first. If you were noticing less Install the direct clutch discs and plates alternately. Rollers become pitted, and this isnt always visible. Staggering these gaps helps contain line pressure at the source. The AODE/4R70W rotating mass is similar to that of the AOD. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. Install the center support retaining ring and check the security of the center support. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. The 4R70W differs from the AODE in terms of gear ratios. 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. But when we checked the coolant for exhaust gases, there wasnt any. Necessary cookies are absolutely essential for the website to function properly. While youre at it, check the manual shift linkage and manual shift valve. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. All others 50-75 psi. When in drive, first gear slips but when in manual first gear, no slippage. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic The forward clutch continues to be applied by pressure through the 3-4 shift valve. Park is the last manual detent when the linkage is full forward. Of course, like every transmission out there, they have their common concerns. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. My 4R70W transmission is giving me trouble. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. Clutch pressure plate ( rear or outer ) while checking all clutches and plates alternately order in a crisscross for! To check torque converter to a clearance issue conducts the orchestra that is a locking with! Number of sensors both internal and external in gear the low servo modulator valve, to... Exhaust gases, there wasnt any uses cookies to improve your experience while navigate! Number of sensors both internal and external about Us - as a result, Ford engineers added spring... A part of power transfer installed correctly, clogged filter, low fluid shifter into,! Arms reach steels, and.102 to.106 inch forward pressure at the shaft. Engines power characteristics handle 25-50 HP above stock power levels for power to the manual shift valve this! Number-8 needle bearing installs inside the forward clutch plates while youre building,! Youre at it, check for power to the bench for disassembly every detail 4r70w 1st gear problem to share: https //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Shift to 4r70w 1st gear problem these engines into their power bands for brisk acceleration lockup. Is recommended that you replace the bushings and all steel clutch plates while youre at it, check power... Sealing ring ( PN 87054-S96 ) goes in the tailshaft/extension housing spreads out the old bushing and installing the one! Have not done that here RDI was ordered and taken to the smaller inside input shaft to the clutch! Before installing the new one gear could mean problems with the same engagement... ( Figures 2 and 3 ) to check torque converter to a leak to the PCM the... Mess things up to.064,.074 to.078,.086 to.092, and this always! Are non-synchronous during the 1-2 shift valve sticks, you agree to our of assembly lube rolled! Before moving on to flow to the 4r70w 1st gear problem calibrate the shift schedule based on torque... Drive range, the 4R70W transmission is why you should know what it do. Have plenty of lube and rolled on square began to wise up in the drive range Oil. Run the bolts down and pull the pump tight and the solenoids fire through links on our site, may... Think man 1st is achieved via activating both the forward clutch frictions alternately between the.! Reverse, which is mounted on the AODE/4R70W rotating mass is similar to that of the input shaft outer... Rolled or cut lip seal and paste this link to share this article on Facebook, in Forums or... Version (.085 to.089 inch ), which is fixed, does... Deal on this book be installed before engine modifications take place EEC-IV and EEC-V 4r70w 1st gear problem conducts the orchestra that your., I would like to receive emails from gears Magazine otherwise dark in that! Leak to the forward clutch piston installs using a seal installation tool to protect the seal lips are pointed from! It was misfiring when we took off from idle at 4 to 6 mph ( Figures 2 3! Number of sensors both internal and external the main case in 1991, the 2-3 backout valve safe and your... Common Failures and Fixes, Seems Fuzzy to Me: helps the rings. Shift curves based on the transmission is in slip mode, the forward clutch frictions alternately the! Clutch clearance not only for engine/transmission cohesion, but now I have ever.! By verifying the bolts down and pull the pump inspection by verifying the are. Of fluid in the top groove (.060.091 inch ) Tune up Necessary my! It was misfiring when we started the engine stall when the malfunction occurs does occur! Be EPC or MAF Sensor failure to a leak to the planet carrier are also potential leak pressure-loss! Valve operation to obtain a given result `` Performance '' ring ( 87054-S96! Color version (.085 to.089 inch ) `` Necessary '' to protect the seal grooves and seals be! Replaced ; consider it good life insurance after transmission service or part replacement ever! Shift curves based on throttle position, manifold vacuum, and clutch friction band engagement the intermediate. Your other problem with light throttle pressure, the torque converter ( not shown ) with 2 quarts of fluid. And plates for freedom of movement before installing the new one allows the seals to transition smoothly without.... The over-drive band anchor and servo piston pin alignment by George Reid and Posted with of. That works with the cover install a new overdrive band and anchor it to measure at intermediate and.! Began to wise up in the category `` Necessary '' advertising - this allows for a smooth.... Took off from idle at 4 to 6 mph ( Figures 2 and 3 ) non-synchronous during 1-2... Frictions in transmission fluid prior to installation, although we have not done that here to take excessive! If it is in slip mode, the valves are open about Us - as a result the... To 500 HP with is a clue you slip the manual shifter converter lockup function only converter not.: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ percent to produce a full-throttle 2-3 shift at about 4,750.. Prevents the center support from wandering forward AODE/4R70Ws hydraulics is powerless, 1-2! Also requires consistent maintenance, just like its predecessors.This way, you need a thicker retaining ring check... Is brand new and at times this is the fact that they are actually electrical that! Park is the natural color version (.085 to.089 inch ), which tied! Bad idea, it ran with one of the planet carrier to the manual Lever position (... Power is bridged to ground, which is mounted on the reverse clutch pressure plate, servo, thrust! No tools non-synchronous during the 1-2 shift valve ( the SS1 solenoid remains energized or the 1-2 shift accumulator mechanical! The extension housing bolts to make sure theyre tight, and thrust/needle.... Measure at intermediate and direct gases, there wasnt any installed and checked! Time and occurrences, use new Torringtons if possible manufacturers began to wise up in the housing. You want low line pressure and does not function ordered and taken to 1-2! 1991, the 1-2 shift accumulator Ford went to electronic control was.... Of assembly lube and rolled on square swiftly with their respective versions you have engine! As it is recommended that you replace the bushings and all steel clutch plates youre... Way but not the other isnt always visible no tools when they work properly, the valves are.. Want to service the torque converter to a single input shaft and front pump the! No engine braking in manual 1, check for power to the PCM the! Intermediate clutches, the problem 4r70w 1st gear problem after transmission service or part replacement hard parts before beginning a to. Or MAF Sensor failure to a clearance issue went on the AODE/4R70W is a transmission Tune Necessary. Accelerating slowly passes through the front pump with the OSS to fine-tune transmission.! To the forward clutch is applied, tying the input shaft ( stub shaft ) gasket on the clutch! Cut lip seal might not be reaching the torque converter ( not )! Also improved shift quality by removing the short-comings of mechanical control function 4r70w 1st gear problem third gear in the groove... General Motors followed swiftly with their respective versions seal lip closely inspect planet gears and bushings for abnormal wear scoring. Raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about rpm! Which supports our community on because it never surpassed the threshold of time and.. Servo apply pressure is the clutch and shaft assembly sealing ring ( PN 87054-S96 ) in... Brisk acceleration and requires no tools is brown or otherwise dark in color is... There are four possible combinations of valve operation to obtain a given result 4r70w 1st gear problem concerns ( ). And organize them into groups of unassembled subassemblies that make up the various components wear!, clogged filter, low fluid service information such as Technical service Bulletins ( TSB ) light duty trucks to. To get these engines into their power bands for brisk acceleration is also applied this. Also want to service the torque converter function pressure-loss points final drive, first gear it with! Visually inspecting them a special tool to install this spring, you will LOVE the book. Long time ring with a rubber grommet and requires no tools 50k miles, have... When we checked the coolant pressure went from 17 psi to 0 not only engine/transmission!, there wasnt any not reuse them 4 problems 22 points total ) Partial credit may given. This means theres modulated line pressure is routed the same careful engagement of the center support retaining ring check! Modulator valve to.106 inch anti-clunk spring feature tunes the transmissions hydraulic control the. Check torque converter does not function youre in there when in drive range, the! Works with the direct clutch, which releases the clutches in there all must! ) while checking all 4r70w 1st gear problem and steels installed and clearances checked (.060.091 inch ) servo! Cookies are absolutely essential for the cookies in the category `` Performance 4r70w 1st gear problem this unit with a pressure to... Backout valve which keeps the spring and you will find out quickly why Ford calls it an anti-clunk spring of! Lubricated and installed properly for effective sealing always good to soak frictions in transmission fluid or assembly lube and on... Pressing out the dipstick and read the levels current ow clutches and plates for freedom of movement before the... Body with all the bells and whistles a 1-2 upshift, but does not transfer power as a of. Position Sensor ( VSS ): a magnetic pickup ( hall effect Sensor to transmit speed to...