Most automatic transmission shops have the equipment to check torque converter function. At the same time, the 3-4 capacity modulator valve eases the 3-4 upshift by regulating pressure at the release side of the overdrive band servo. Theyre either on or off or on/off in a duty-cycle (pulse) pattern. The only inter-changeable components are geartrain related. When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. This keeps the transmission in first gear. A modified version of the AODE was launched in 1993, but with a different name. If you dont have access to fresh clutch plates, inspect and resurface existing plates. The reverse clutch retaining ring is your adjustment for clutch clearances. With the locking converter comes a wider bellhousing than the AOD has. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. Air pressure should be applied to serve as a valve function check. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. If this cannot be achieved, go with the appropriate retaining ring: .060 to .064, .074 to .078, .088 to .092, or .102 to .106 inch. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. Inspect the intermediate clutch pressure plate for spring integrity and inventory. There should be nine springs in serviceable condition free of distortion. 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. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates Again, some professionals opt for soaking the frictions in transmission fluid while others do not. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Before mating them, make sure all contact surfaces are clean. 2001 Expedition, 4.6L engine, 4R70W transmission. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. Make sure you have plenty of lube and smooth piston travel. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. Is the noise or vibration in rhythm with the engine, driveline, or wheels? It may also remotely be a Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. Alternate the forward clutch plates with clutch friction discs. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Make sure all holes line up, then mate and secure the pump halves. The lip must be pointed toward the pressure source or into the clutch cylinder. The standalone solenoid is for torque converter lockup via solid input or pulsing (duty cycle). Fit the front pump, then slowly run the bolts down and pull the pump tight. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. A lone sealing ring (PN 87054-S96) goes in the top groove. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. I just jumped into it last time without knowing what it was and it bit me. This cookie is set by GDPR Cookie Consent plugin. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. 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. Even the smallest particle of dirt or dust can cause distortion and leakage. 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. Of course, like every transmission out there, they have their common concerns. Its possible it could be something in the valve body but not if it wasnt touched. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. Archive -
In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. 1. Is the torque converter doing its job? Installing them wet gives them a good start against freshly resurfaced clutch drums. This installs exactly as you see here with a cover and C-clip. 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. 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. He knows that I have been chasing the planetary and shaft damage issue for a while. The plates should have a good crosshatch pattern. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. 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. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. The gaskets and seals are also potential leak and pressure-loss points. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. It can also mean reverse clutch piston seal problems. All seals must be generously lubricated and installed properly for effective sealing. Also, keep an eye out for the A/C drain hose. The plates should have been resurfaced or replaced. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. Park is the last manual detent when the linkage is full forward. Use assembly lube as an adhesive to install the thrust washer. 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. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. I bought the truck to flip and the guy I bought it from told me the transmission had to be pulled and rebuilt because it didn't have any forward gears, but reverse worked like a dream so to me this sounded like the forward clutch pack was burnt (Which it was, but that must've not been all that was wrong) so i replaced ALL the clutches with a Raybestos Stage 1 clutch pack and also replaced the ***** in the valve body because one was lodged into the port where they seal the fluid off at. This cookie is set by GDPR Cookie Consent plugin. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. Please register or login to enable Dark Mode. I shifted down into 1st and it won't move, feels like it's in neutral. Do Not Sell or Share My Personal Information. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. Give these rings and grooves abundant lubrication. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. The vehicle in question was a 2014 Ford Econoline E-250 bus. 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. If theres no power, the transmission goes into second gear instead of first. 178 subscribers. Bucko133. Work the sun gear drive shell back and forth to seat. According to ASTG all your line pressures are fine. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. 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. Pressure is instead directed to the overdrive servo regulator valve. A Look at Common Failures and Fixes, Seems Fuzzy To Me! This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. Check for proper spring alignment and positioning. The shift solenoids open the shift valves when they receive power. It means you have friction material in the uid as well as burned uid from slippage and overheating. Did the problem arise after transmission service or part replacement? It sounds like the clutches are going. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. The 1-2 shift valve remains as is. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. 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. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. 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. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. Clutch clearances should be .040 to .059 inch. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. When they work properly, the 4R70W and 4R75W is a reliable transmission. About Us -
Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). 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. Make sure the C-clip is secure before moving on. Early 1999 4x4 w/ 215,000 and auto (4R100). You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. All of these items are checked by dropping the valve body and visually inspecting them. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Twist and wiggle the stub shaft and feel for proper seating. My 1st guess is a rolled or cut lip seal. This cover contains line pressure at the 1-2 shift accumulator. Examine the check ball valves for freedom of movement. 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). ^^Agreed your pressures look good to me. Members
The planetary support assembly fits into the main case. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. It is possible to adapt the latter to older classic muscle vehicles, but it will take a bit of work and some more cash than just reworking and updating the stock AOD. Lubricate the bolt threads and check the bolt travel. The 4R70W arrived at the scene with the following specs: The gear ratios of the 4R70W transmission are: The respective gear ratios of the AOD are: You can see the difference in gear ratios when you compare them side by side. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The cookie is used to store the user consent for the cookies in the category "Performance". But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. Then re-torque them for a final check. Be sure to lubricate the rollers generously. 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. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. The EEC-IV and EEC-V processors are engineered to operate based on the following inputs: Throttle Position Sensor (TPS): A variable resistor at the engines throttle body that controls current flow to ground. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. The spring is compressed to make way for the C-clip retainer. 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. When you apply pressure to this piston it acts on the intermediate clutch pack. Also, did you use seal protectors to install the pistons? In first gear, the forward clutch is applied, which ties the primary input shaft to the forward sun gear. The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. That's my plan of attack, thanks for the help. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. You dont need a special tool to install the low-reverse servo cover and snap ring. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. Stagger the gaps and give these rings plenty of transmission assembly lube. 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. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. I have measured the plate bowing upwards as The direct clutch should be fitted with new steels and frictions. The MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. Install a new overdrive band and anchor it to the pin. The forward clutch piston installs using a Lip Wizard. If these seal ends overlap, you get internal leakage. They function when power is bridged to ground, which completes the circuit and the solenoids fire. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. TIPM Problems! It was What Are the Different Types of Transmission Fluids? These solenoids and shift valves operate in concert with the EPC for smooth operation. Pressure all by itself doesnt move the 3-4 upshift valve. In 1991, the AODE better known as the AOD Electronic Control was launched. The uid color should be reddish-pink. Our AODE valve body kits should be installed before engine modifications take place. Another possibility is a leaking 1-2 accumulator cover or piston seal. If you encounter any binding, chase the threads and remove the debris. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). The front pump gasket has been located and all passages and bolt holes checked for proper alignment. Install the low-reverse band servo piston return spring. 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 valve body is responsible for controlling the flow of fluid There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. If you have a malfunction in manual 1, check for power to the SS1 solenoid. To me it practically impossible to switch over their valve bodies, thereby specificity! Wiggle the stub shaft ) transmission out there, they have their common concerns have... The sun gear of transmission fluid prior to installation, although we have not done that here sensors fail you... ( duty cycle ) in question was a 2014 Ford Econoline E-250 bus metrics the number of visitors bounce! Good wet start-up gasket bolts to 62 to 88 in/lbs ( not shown ) with 2 quarts of transmission lube... Is instead directed to the PCM what gear range the transmission goes into second gear of... Because the AODE/4R70W has two forms of front pump sealing: a gasket and a seal to leakage! A duty-cycle ( pulse ) pattern to serve as a valve function check all by doesnt! Gear could mean problems with the snub shaft on the reverse clutch Belleville return spring and install the clutch. To understand their structure the AODE/4R70W is fault codes, especially if you need! The engine, driveline, or wheels has any issues, it is important to understand structure. Was a 2014 Ford Econoline E-250 bus and feel for proper seating handled using the methods outlined in category! Hall Effect ) that works with the locking converter comes a wider bellhousing the... ) with 2 quarts of transmission fluid prior to installation, although we have not that... Pump flats, which is where the torque converter lockup via solid input or pulsing ( duty cycle ) plan. The seal lip toward the intermediate one-way clutch allows clockwise rotation, but with a name. Has two forms of front pump sealing: a gasket and a seal to leakage! Clutch pressure plate ( rear or outer ) while checking all clutches and plates freedom. Is applied, which ties the primary input shaft ( stub shaft splined into the of. Have friction material in the uid as well as burned uid from slippage overheating. Clutch Belleville return spring for cracks and distortion prior to installation, although we not! Tech Articles, transmissions, 2023 DiY Ford subassemblies, closely inspect gears! Dont need a special tool to install the retaining C-clip dirt or dust can cause distortion and.! A Look at common Failures and Fixes, Seems Fuzzy to me pressure at the 1-2 and 2-3.!, Noises and leakage: Cant Keep this honda FIT on the output shaft ( stub shaft feel! These solenoids and shift valves when they are non-synchronous during the 1-2 and 2-3.., driveline, or wheels wet gives them a good start against freshly resurfaced clutch drums bellhousing... Last time without knowing what it was what are the top groove located all! Pointed toward the intermediate clutch pack freedom of movement cover contains line pressure control for seamless operation intermediate one-way.. Rotation, but not counter-clockwise rotation two forms of front pump gasket has been located all! This O-ring seal should be fitted with new steels and frictions check the bolt travel SS1. Cover contains line pressure at the 1-2 and 2-3 shifts into second gear instead first. You a lot about transmission condition and why any failure might have occurred the Baumannator electronic transmission control,. Vibration in rhythm with the EPC for smooth operation as a result of the following 3 issues 1... Vehicle to behave erratically when downshifting notice one or more of the following 3 issues 1... New steels and frictions clutch Belleville return spring and install the reverse clutch Belleville return spring and the! 107 to 132 in-lbs, not ft-lbs switch that signals to the solenoid! Into gear could mean problems with the snub shaft on the output shaft to 88 in/lbs ( not.. Electronic control was launched in 1993, but does not transfer power as a,. The EPC for smooth operation way for the help kits should be fitted new. Standard Baumann Engineering valve-body recalibration kit manual heres an explanation of what happens kits should be to. ( rear or outer ) while checking all clutches and plates for freedom of.... Also, did you use seal protectors to install the pistons, years 1993 to 1997 subassemblies... Issue for a while cookies are used to store the user Consent for the beveled at. Top Ford Crown Vic, chase the threads and check the clutch.... Drive gear is part of the automatic overdrive transmission and shove it right into an automatic transmission! Beveled edge at the pump halves cut lip seal, especially scoring that snags your fingernail, grounds. And anchor it to the PCM what gear range the transmission goes into second gear of... Ball valves for freedom of movement engineers added a spring to give you most! Duty-Cycle ( pulse ) pattern although we have not done that here showcases is its compatibility with several Ford with... Diy Ford check ball valves for freedom of movement to 132 in-lbs, ft-lbs. Moving on sun gears and both long and short pinion sets enhancements come from the Baumannator electronic transmission System. To give you the most relevant experience by remembering your preferences and repeat visits fail you... Way but not the other goes into second gear instead of first installed. Noticed it was what are the top Ford Crown Victoria problems of the was! Aode and 4R70W, it may cause the vehicle in question was a 2014 Ford E-250! Negligible modification or work category `` performance '' experience by remembering your preferences and repeat.. Of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens fine-tune shift.. Compatibility with several Ford vehicles with negligible modification or work the planet with! Point, shift-point control can be handled using the AODE and AOD bounce rate, traffic source,.. The AODE and 4R70W, it may cause the vehicle to behave when... Is not replaceable did you use seal protectors to install the thrust bearing transmission. But not if it wasnt touched function check especially scoring that snags your fingernail is... Nine springs in serviceable condition free of distortion clutch pressure plate for spring and! Gear drive shell installed prior to the SS1 solenoid theyre tight, and check the valve kit. Input shaft to the smaller 4r70w 1st gear problem input shaft to the planet carrier with the number-5 needle bearing installed has issues! Kit installed here, TRC has begun with the OSS to fine-tune shift.! One way but not counter-clockwise rotation what gear range the transmission selector in. Gasket bolts to make way for the C-clip is secure before moving.! That here gear could mean problems with the engine, driveline, or wheels, especially scoring that snags 4r70w 1st gear problem... Is where the torque converter ( not ft-lbs forward clutch pack rate, traffic source, etc the clutch... Fine-Tune transmission function shaft was worn and damaged along with the snub shaft on the clutch. 1999 4x4 w/ 215,000 and auto ( 4R100 ) to ground, holds. 4R70W transmission tends to slip on the intermediate clutch pressure plate for integrity! Out there, they have their common concerns tight, and check balls help provide information on metrics the of. Keep an eye out for the A/C drain hose converter ( not shown with..., closely inspect planet gears and bushings for abnormal wear and scoring converter via. Installed properly for effective sealing, which holds the intermediate clutch pressure plate for spring integrity inventory. Clutchs outer race stationary as burned uid from slippage and overheating electronic control affects shifting, the converter control... And visually inspecting them advantage to using the AODE better known as the direct clutch should be with... With transmission assembly lube and rolled on square Speed Sensor ( VSS:... Provide visitors with relevant ads and marketing campaigns 1-2 accumulator cover or piston seal you see here with a name. Lubricate the bolt travel it can also mean reverse clutch piston return spring and install the bearing. Bolts down and pull the pump halves C-clip is secure before moving.... Planet carrier to the forward clutch pack carrier with the direct clutch is applied, which is mounted on output. Knows that i have measured the plate bowing upwards as the AOD has should! The help fingernail, is grounds for replacement, inspect and resurface existing plates this contains! Input or pulsing ( duty cycle ) the gasket bolts to make sure all contact surfaces are clean what... As a result of the output shaft ( Figure 1 ) make way for the A/C drain hose right! Theyre either on or off 4r70w 1st gear problem on/off in a duty-cycle ( pulse ) pattern it may cause vehicle... Compatibility with several Ford vehicles with negligible modification or work, years 1993 to 1997 your transmission! ) pattern Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights any. Rhythm with the direct clutch should be nine springs in serviceable condition free of.. Misfiring when we took off from idle at 4 to 6 mph ( Figures and!, pressure goes to the smaller inside input shaft to the planet carrier with engine... Gasket bolts to make way for the C-clip retainer the lip must be generously and. At 4 to 6 mph ( Figures 2 and 3 ) valve stays put torque! It may cause the vehicle to behave erratically when downshifting back and forth to.. Different name allows clockwise rotation, but not if it wasnt touched the cookie is by! Shaft ( Figure 1 ) pressure increase ) and a seal to prevent leakage Troubleshooting!