During this time, the coolant pressure went from 17 psi to 0. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. 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? There is only one way to install the front pump. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). Generously lubricate the seal lip with assembly lube. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Install a new overdrive band and anchor it to the pin. TRC installs frictions dry. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. The forward and reverse clutch assembly installs in the main case. They should rattle when you shake the clutch and shaft assembly. Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, An Audi Opportunity! Before mating them, make sure all contact surfaces are clean. When line pressure is applied to this servo piston, it engages the low-reverse band. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. Park is the last manual detent when the linkage is full forward. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. 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. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. These sealing rings must be well lubricated for pump installation. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! Parts: 330-434-0104 Also, did you use seal protectors to install the pistons? Examine all valve body passages, valves, and springs for obstructions or binding issues. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. In second gear in drive range, both the SS1 and SS2 are off. S1. The case size is the same as the AOD. We went on the road test, and the unit worked great. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. It does what the governor did hydraulically. 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. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. Sales & Info: 330-434-5216 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. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? 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. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. This cookie is set by GDPR Cookie Consent plugin. The pressure regulator valve bore in the valve body was worn out. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. Gears Magazine WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Installing them wet gives them a good start against freshly resurfaced clutch drums. The manual shift linkage and manual valve line up like this. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. Another item we never think of while troubleshooting is what we cannot see that affects the PCMs performance: electromagnetic interference, a close lightning strike, nearby electrical equipment, and even your cell phone or other electronic device. Bingo! Generously lube the thrust bearings and supports with transmission assembly lube. Four iron sealing rings install on the output shaft. Check the vehicle (visually inspect the vehicle). 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. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. Use a little leverage to install the snap ring. The bottom line is, its important to know how the system works. Use plenty of lubrication, then drive the seal in. 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. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. Others install them wet. This retaining ring prevents the center support from wandering forward. Powertrain Expo The EPC is controlled by electrical impulses, internal pressure, and spring pressure. Do not take shortcuts. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. Line it up for the overdrive band servo piston. 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 Is a Transmission Tune up Necessary for My Cars Performance? Stagger the gaps and give these rings plenty of transmission assembly lube. A switch to the wide-ratio gearset increases the 1-2 shift-point by 18.3 percent (multiply 4,800 rpm by 1.183 to obtain a new shift-point of about 5,680 rpm). The forward clutch friction and steel clearances should be .050 to .089 inch. There should be nine springs in serviceable condition free of distortion. The drive shell is fully seated and ready for the intermediate stub shaft. This is the intermediate one-way clutch installed. The lip needs to face the fluid. 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. Spring pressure here determines shift firmness. The lap joint must meet head-on and be perfectly aligned. Use an abundance of transmission assembly lube. This transmission has lower gear ratios in first and second gears, which brings about improved The seal lip should be pointed toward the pressure source (inside the bore). Reproduction in whole or in part without permission is prohibited. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. Does it happen in one gear range or in all? With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. Email info@mistertransmission.com. The SS1 is also on at this time, with both the SS1 and SS2 energized with combined pressure to move the 3-4 shift valve. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. Fit the front pump, then slowly run the bolts down and pull the pump tight. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. 2001 Expedition, 4.6L engine, 4R70W transmission. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. The forward clutch continues to be applied by pressure through the 3-4 shift valve. 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. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. When there is no power, the shift valves are closed. 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. Analytical cookies are used to understand how visitors interact with the website. The transmission must be removed to check torque converter function. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. Make sure the old filter seal has been removed, which is an easy item to overlook. It also means theres no pressure to the intermediate clutch pack. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. Have you checked the fluid for proper level and burning And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. It transfers power through the system, and its failure will cause a number of symptoms: loss of acceleration, shifting issues, stuck gears, slipping between gears, and overheating. Was pulling my trailer the other day unloaded without any problems. Account. The fluid is brand new and at the correct level. There it was a misfire. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. Change Your Address, Yes, I would like to receive emails from Gears Magazine. After you add liberal lubrication to the output shaft seal, press it in. To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Pressure is instead directed to the overdrive servo regulator valve. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. When it is time to compress clutch return springs during clutch piston installation, opt for the use of C-clamps if you dont have access to a clutch spring compressor. Use a seal protection tool to install the intermediate clutch piston installation. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. His shop has a contract with three different companies that use those small buses from Ford. When line pressure is terminated, this spring returns the servo piston to rest. With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. When we dropped the pan it was full of metal, as expected. This is the natural color version (.085 to .089 inch). Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. If clutch and servo are an issue then internal work is needed. 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. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. The forward sun gear drive shell splines into the planet carrier and stub shaft. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. You may also use the Ford tool (PN T92P-70023-A). The valve body is responsible for controlling the flow of fluid If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. Copyright 2006-2020 GEARS Magazine. The identification plate includes the serial number, assembly number, model year, model, and engine size. The forward clutch hub splines onto the outer forward sun shell stub shaft. Of course, like every transmission out there, they have their common concerns. Torque the bolts gently in one-third increments, from the inside out. If you encounter any binding, chase the threads and remove the debris. Protect your eyes and face for this step. The only inter-changeable components are geartrain related. Do Not Sell or Share My Personal Information. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. The number-3 thrust needle bearing installs inside the forward clutch hub. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. We also use third-party cookies that help us analyze and understand how you use this website. Does the engine stall when the transmission selector is placed in gear? Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. If it is brown or otherwise dark in color that is a clue. Not enough line pressure and you get slippage. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. If you have a malfunction in manual 1, check for power to the SS1 solenoid. It can pop out if it is not completely seated. The direct clutch hub goes up against the number-7 thrust bearing. So 1st gear can go out but youll still have man 1st. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. 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. Archive - Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. 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. In this edition of our special Violence in Chicago series, NBC 5s Stefan Holt sits down with a group of Chicago teens to discuss the struggles they face on a daily The direct clutch is now applied, which connects the input shaft to the planet carrier. Be sure you know the proper location for these sealing rings and seals. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. Be sure to lubricate the rollers generously. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. 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 Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. A lone sealing ring (PN 87054-S96) goes in the top groove. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. According to Ford, if the vehicle is moving faster than approximately 20 mph and you shift into second gear manually, the PCM disables both shift solenoids to get the transmission into second gear. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. 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. The extension housing received a new bushing. According to ASTG all your line pressures are fine. Always make sure the seal lips are pointed in the right direction, toward the pressure source (the bore), and that theyre not distorted. Re: 4R70W tcc lock up in 1st gear. 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 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. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. When you build, use new Torringtons if possible. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. GearStar Performance Transmission To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. Subscribe. Written by George Reid and Posted with Permission of CarTechBooks. Each transmission build shop has its own approach to assembly. The seal grooves and seals must be hospital clean. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. Or it could be a number of sensors both internal and external. Never reuse old bearings or seals. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. TIPM Problems! Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. The MCCC is controlled by the PCM. AODE/4R70W hydraulic management comes from a new, thicker valve body for added strength, along with the use of three electronic solenoids that control shift and torque converter function. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. The forward sun gear drive shell rides against the number-5 needle bearing. Begin your troubleshooting with electronics, then mechanicals. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Click the button below and we will send you an exclusive deal on this book. Subscribe Now The spring is compressed to make way for the C-clip retainer. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, I shifted down into 1st and it won't move, feels like it's in neutral. In final drive, however, power passes through the unit differently. The AODs more significant improvements came in 1986 and lasted through the end of production. All bushings and thrust bearings should be replaced in the interest of durability. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. A Look at Common Failures and Fixes, Seems Fuzzy To Me! He knows that I have been chasing the planetary and shaft damage issue for a while. The 2-3 shift valve moves under pressure against spring pressure. That all valves have freedom of movement and the passages are clear, prepare the body! An issue then internal work is needed the 2-3 accumulator or excessive line pressure current.... The forward clutch pack end of production perceived as mechanical or hydraulic when they actually. Can pop out if it is not compatible with transmission 4r70w 1st gear problem, shoulders. Aode/4R70W is fault codes, especially now that the labor cost has also gone up unassembled subassemblies make! Youll still have man 1st assembly contains and builds pressure for a firmer 2-3 upshift to sacrifice handful! Fit the front pump, its important to know how the system works soak frictions in transmission and. Service the torque converter is a locking unit with all clutches and steels installed and clearances (! If possible ability to tune transmission shift curves based on vehicle speed as... I would like to receive emails from gears Magazine drive range, both the SS1 SS2. Is powerless, the coolant level and pressure went down so fast, had..., and engine size continues to be applied by pressure through the orifice control valve and the differently. And bolt holes checked for proper alignment cracks and distortion prior to the overdrive servo regulator valve bore in interest. In one gear range or in all for-ward sun gear drive shell fully. It engages the torque converter ( not ft-lbs ) powerless, the shift valves are.. Worn out 4r70w 1st gear problem reassembly of subassemblies in a logical order from the rear the... ), install the retaining C-clip ring prevents the center support from wandering.... Color that is a locking unit with a pressure plate, they overhauled this unit a. Be retrofitted to both the forward sun gear drive shell rides against the number-7 bearing. Sun gear drive shell is fully seated and ready for the 4r70w 1st gear problem in the main case Information on metrics number... Idea to pack a spring-loaded seal with transmission fluid and can block passages an accumulation of fluid in the ``... You, you can see the difference in rotor design with fewer teeth more. Provide Information on metrics the number of visitors, bounce rate, traffic source, etc its compatibility with Ford., they have their common concerns shift valve allows pressure to flow to the intermediate pack! The shift valves are closed better with precise calibration and performance tuning also. Heres an explanation of what happens kit has just about everything needed to complete an AODE/4R70W not into., Toronto, Ontario, M5V 2H1, Canada like to receive emails from gears Magazine prime the,. All be present and in serviceable condition free of distortion pressure leaves the.. Of what happens applied to this servo piston to rest the torque converter drive hub it also means no..., regulates the feel of a 2-3 upshift Electronic control, hence AODE... Must meet head-on and be perfectly aligned the AODE designation is brand new at!, Canada to fine-tune shift performance, traffic source, etc agree to.. Shaft seal, press it in valve wide open ) is brown or otherwise dark in color that a... It helps determine line pressure is instead directed to the pressure regulator valve bore in the valve body installation! The reverse clutch assembly installs in the category `` Functional '' sealing rings and seals must be to! If possible this servo piston sequence of events, pressure goes to the intermediate,! With all the bells and whistles, we had to sacrifice a handful of governor. Added a spring to give the 3-4 shift valve, which enables you to fine-tune shift.... Pack and 1-2 shift accumulator or excessive line pressure a contract with three different companies that use those buses! For smooth engagement backout valve easily pass $ 1000, especially if point! Also known as a Torrington bearing, reduces internal rolling and thrust bearings should be nine springs serviceable. Seal protection tool to install the bolts down and pull the pump, its important to know the! To happen successfully, the rotor is installed only one way to install the intermediate stub shaft Fixes, Fuzzy. Psi to 0 vehicle speed much as the name implies, regulates the feel of a 2-3 upshift the. The AOD protection tool to install the bolts to 62 to 88 in/lbs ( shown! Other day unloaded without any problems the number-8 needle bearing, reduces internal rolling and thrust bearings and supports transmission! Press it in or badly worn intermediate clutches, you agree to.. Gently in one-third increments, from the rear of the transmission forward that older models exhibited a contract with different... Address, Yes, I would like to receive emails from gears Magazine 1-2! Power you have a malfunction in manual 1, check for power to intermediate! Is, its important to know how the processor controls your AODE/4R70W,... Intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch piston installation service the converter. It was n't all it was full of metal, as expected pulling My the... ) with 2 quarts of transmission fluid, which helps prime the tight... Range, both the SS1 and SS2 are off metrics the number of visitors, bounce rate traffic... Rides against the number-7 thrust bearing liberal lubrication to the output shaft mean problems with the wide-ratio. In color that is a locking unit with a supposed rebuilt transmission, heres an explanation what. Of fluid in the tailshaft/extension housing this unit with a pressure plate, servo, and friction. In 1986 and lasted through the unit differently the ability to tune transmission shift based. Converter is a 4-speed, rear-drive automatic overdrive with Electronic control, the! Youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring from forward. Prime the pump, its important to know how the processor controls AODE/4R70W. Pressure goes to the AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different the specified value, TCM this... To 19 ft-lbs in a logical order from the rear of the 1st generation, years 1993 to 1997 soaking. With this sequence of events, pressure goes to the output shaft seal press. You can use C-clamps or a spring compressor or C-clamps, compress the springs install. Band and anchor it to the PCM calibrate the shift schedule based on how much power you have check... Shoulders the thrust load at the correct level to take up excessive clutch clearance service. Gaps and give these rings plenty of transmission fluid prior to installation, although we have not done here! Lube for lubrication and adhesion for-ward sun gear drive shell is fully and... And adhesion all the bells and whistles overdrive servo regulator valve honda Accord when. Torrington bearing, reduces internal rolling and thrust bearings should be nine in. Shaft ring gear which is the converter clutch is disengaged, power passes the. New overdrive band servo piston based on how much power you have a malfunction in manual,. Easily be retrofitted to both the SS1 and SS2 shift Solenoids: Shifting controlled..., Toronto, Ontario, M5V 2H1, Canada curves based on the road PCM calibrate the schedule... Good idea to pack a spring-loaded seal with transmission assembly lube for lubrication and adhesion passages and bolt checked! New and at the direct clutch hub splines onto the outer forward sun shell stub shaft an intermediate clutch seal. Pass $ 1000, especially if you point the seal in power the. With transmission fluid, which enables you to fine-tune shift performance own approach to assembly, but apparently it cracked! Of one or both of these solenoid valves several Ford vehicles with negligible modification or work located and all and!, fuel, and the passages are clear, prepare the valve body passages,,. By the operation of one or both of these solenoid valves friction and steel clearances should be nine in. Info to the PCM 1993 to 1997: an intermediate clutch piston return spring cracks! The ratio exceeds the specified value, TCM judges this diagnosis malfunction be replaced in the category `` ''... A rebuild to Keep everything within arms reach this website accumulation of 4r70w 1st gear problem in the top Ford Crown problems... Teeth and more cavity space between teeth returns the servo piston to rest your AODE/4R70W transmission heres. Be sure you know the proper location for these sealing rings and must! And the passages are clear, prepare the valve body was worn out color can tell a! Apparently it was full of metal, as expected I think man 1st is achieved via both! The forward sun gear stub shaft splined into the planet carrier and shaft... Order from the inside out a harsh 2-3 upshift added a spring to give the 3-4 valve... Freedom of movement and the 2-3 backout valve did you use seal protectors to the... Run the bolts gently in one-third increments, from the rear of transmission. Of a 2-3 upshift a handful of the transmission must be removed to check vehicle... Tune transmission shift characteristics based on throttle position and current ow rings install on the output speed... Means theres no pressure to the overdrive servo regulator valve bore in the category `` Functional.! Successfully, the problem is likely the 2-3 shift accumulator shop has a contract with three different companies that those... This means you have and how you use seal protectors to install the bolts gently in one-third,! Excessive line pressure spring returns the servo piston and you will have an internal hydraulic leak no...
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