Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. 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. If you liked this article you will LOVE the full book. This requires careful twisting and turning until the clutches and hub fully mate. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. Darkness indicates contamination and overheating. During installation, watch the seals and protect them from distortion. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. There is a pronounced limit to its power and torque, and overloading it could mess things up. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Ford Forum is a community to discuss all things Ford. If you have a malfunction in manual 1, check for power to the SS1 solenoid. 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 band misses the servo piston pin or anchor point the band does not function. If you point the seal lip in the wrong direction, it does not hold pressure and the clutch pack does not work. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. The reverse clutch retaining ring is your adjustment for clutch clearances. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. But when we checked the coolant for exhaust gases, there wasnt any. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. 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. This cookie is set by GDPR Cookie Consent plugin. These cookies ensure basic functionalities and security features of the website, anonymously. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. 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. Transmission Control Module: Buyers Guide for Classic Cars. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Focus on any electronic add-on components. If theres little or no pressure, the front pump or filter might be the problem. Fourth gear in overdrive range has both the SS1 and SS2 on. The MCCC again gets pulses from the PCM tied to driving conditions. Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. How did the forward clutch drum look? All of these items are checked by dropping the valve body and visually inspecting them. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. Prepare a new overdrive band servo piston for installation with generous amounts of transmission assembly lube. Lubricate the bolt threads and check the bolt travel. Make sure it remains centered during installation. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. 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. This is the direct clutch, steels, and thrust/needle bearings. WebFord 4R70W/4R75W Transmission Information. Nevertheless, both transmissions are interchangeable. 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. Rollers become pitted, and this isnt always visible. The manual valves function is different where pressure is applied to the overdrive band servo. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. Install the low-reverse band servo piston return spring. The cookies is used to store the user consent for the cookies in the category "Necessary". External seals with lip springs must be checked for proper spring retention. Review service information such as Technical Service Bulletins (TSB). Was pulling my trailer the other day unloaded without any problems. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. Most obvious is the solenoids, which control shift function and converter lockup. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. 2.7K views 3 years ago. Although your AODE/4R70W project may not appear to need it, its a good idea to replace certain hard parts such as the Belleville clutch piston return spring. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. The Fora platform includes forum software by XenForo. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. When removing the old direct clutch piston seals, observe the seal installation and lip direction. This cookie is set by GDPR Cookie Consent plugin. Is there any tests I can do without pulling the trans first? These cookies track visitors across websites and collect information to provide customized ads. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. It was 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. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. It does affect clearances. The plates should have been resurfaced or replaced. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. In second gear in drive range, both the SS1 and SS2 are off. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. As far as the seal protectors, I didn't know there was such a thing honestly. That's my plan of attack, thanks for the help. First gear, the solenoid A and the pressure control solenoid PCS involved. If you encounter any binding, chase the threads and remove the debris. If the SS2 isnt energized, there is a 1-2 upshift, but the transmission never gets out of second gear. Renew Subscription When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. Alternate the forward clutch plates with clutch friction discs. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. Use an abundance of transmission assembly lube. The forward sun gear drive shell splines into the planet carrier and stub shaft. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. Examine all valve body passages, valves, and springs for obstructions or binding issues. Do a leak check with compressed air. The forward clutch hub splines onto the outer forward sun shell stub shaft. It was not on the floor, so we figured the head gaskets were to blame. Check this pressure plate for freedom of movement before installing the pump. His shop has a contract with three different companies that use those small buses from Ford. When in drive, first gear slips but when in manual first gear, no slippage. Please register or login to enable Dark Mode. This keeps the transmission in first gear. Use plenty of lubrication, then drive the seal in. If you dont have access to fresh clutch plates, inspect and resurface existing plates. When line pressure is terminated, this spring returns the servo piston to rest. Always replace the manual shift shaft seal while you have the transmission apart. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. The extension housing received a new bushing. Torque the bolts in a strict pattern to prevent warping. All others 50-75 psi. When we dropped the pan it was full of metal, as expected. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. 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. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. It is unknown how many cycles a Belleville spring can take before it breaks. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. If these seal ends overlap, you get internal leakage. Cant get reverse gear? Webafter it warms up at start up all night 1st gear has a problem engaging then after a minute it goes and there is no problem until i turn it off and after turning it off only for a long while like over night it does it again 8 people found this helpful. Double-check the security of the band at the servo and anchor pins. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). Soaking them allows the friction material to expand, giving you a more accurate clearance. Reverse; 80-120 psi. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. 1. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. There is only one way to install the front pump. The MCCC is controlled by the PCM. Continue stacking until you reach the pressure plate, then check clearances. Four iron sealing rings install on the output shaft. Installing them wet gives them a good start against freshly resurfaced clutch drums. Make sure you wipe it off and put it back in for a more accurate reading. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. When both spool valve and valve body expand more uniformly, function tends to be more predictable. The shift solenoids open the shift valves when they receive power. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Torque the extension housing bolts to 16 to 20 ft-lbs. Staggering these gaps helps contain line pressure at the source. There it was a misfire. The low-reverse band is applied, which holds the planet carrier. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Spring pressure here determines shift firmness. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Two of these solenoids control shift function; the third is for torque converter lockup function only. When there is no power, the shift valves are closed. As power begins to reach the EPC, theres less line pressure and the sliding valve is moved by spring pressure. At WOT, you want high line pressure for firm clutch and band engagement. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. These cookies will be stored in your browser only with your consent. As the AODE/4R70W shifts into third gear, the output shaft sensor signals the PCM to energize the SS2, which directs pressure to the 2-3 shift valve and ultimately the 3-4 shift valve. The forward drum as far as I can tell looks to be in perfect shape. Pressure against the seal lip is self-sealing and fail-safe. (You can unsubscribe anytime), ATRA Yes, valve body was removed and Sonnax Sure Cure kit was installed. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. Lose the spring and you will have slip-yoke leakage. The engine misfired intermittently, but why werent there any misfire codes? Is the pump making hydraulic pressure and is pressure getting to the valve body, which is confirmed with a pressure gauge via the pressure port? 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, delayed/no lock-up, harsh 2-3 shift, loss or slipping in forward gears, direct clutch failure or loss of third and fourth gears, low pressure or harsh shifts and front 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. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Early 1999 4x4 w/ 215,000 and auto (4R100). Others install them wet. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. 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. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. Could you pressure test to see if its not building pressure and could you explain how to do so? This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. What makes the AODE and 4R70W different from the AOD is the locking torque converter with a conventional friction clutch instead of the locking overdrive unit. Members Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Both transmissions are significantly improved versions of the first 4-speed AOD (automatic overdrive transmission) that Ford created and provided as a much-needed solution to fuel efficiency problems created in the United States by the oil embargo of the 1970s. Never reuse old bearings or seals. The lip must be pointed toward the pressure source or into the clutch cylinder. Did you install the lip seals the correct way? If you point the seal lip away or to the outside, it leaks and loses pressure. You also need to measure the forward, intermediate and direct clutch pressures at their ports. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. In third gear in overdrive range, the SS1 is off and the SS2 is on. Top. 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. The forward clutch release pressure unseats the valve bodys number-2 check ball (WOT) or through to the FC34 uid circuit (light or no throttle), which depends on 2-3 backout valve position. Generously lube this assembly and install it, along with the cover. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Pay close attention to the seal status. If the uid and filter are clean, the pump and pressure relief are the next order of business. Examine the check ball valves for freedom of movement. Advertising - The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. If your AODE/4R70W experiences no 3-4 upshift, it is a sticking 3-4 shift valve, overdrive servo issue, or a failed overdrive band. 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. TRC installs frictions dry. Re: 4R70W tcc lock up in 1st gear. Privacy Policy. 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. They should rattle when you shake the clutch and shaft assembly. The direct clutch hub goes up against the number-7 thrust bearing. Apply uniform pressure to the piston while feeling for a smooth transition. During this time, the coolant pressure went from 17 psi to 0. When the solenoids are energized, the valves are open. Sometimes the MAF sensor causes transmission problems. Did it come on all at once or did it arrive gradually? All Rights Reserved. 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. 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. The forward clutch piston installs using a Lip Wizard. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. 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. However, for the sake of longevity, replace yours. I would start by removing the valve body and inspecing it first. In final drive, however, power passes through the unit differently. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. It could also be a misfire. It can leak on top of the boot for the number four cylinder and cause a spark to arc to the cylinder head, causing a similar effect. 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. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. The 4R70W differs from the AODE in terms of gear ratios. Once you have the converter seated it is 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. The direct clutch is now applied, which connects the input shaft to the planet carrier. Begin with a plate and alternately stack clutch discs and plates. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. Overloading the 4R70W transmission is a bad idea. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. With the locking converter comes a wider bellhousing than the AOD has. This retaining ring prevents the center support from wandering forward. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. For a better experience, please enable JavaScript in your browser before proceeding. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. 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. The MLPS is outside and is tied to the manual shift linkage. In 1991, the AODE better known as the AOD Electronic Control was launched. Do Not Sell or Share My Personal Information. This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. He knows that I have been chasing the planetary and shaft damage issue for a while. A modified version of the AODE was launched in 1993, but with a different name. Band assemblies, such as clutches, can be installed wet or dry. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. 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. First gear isnt usually the first to go (no pun intended) on the 4r70w. 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? Give these rings and grooves abundant lubrication. The output shaft and ring gear assembly have been installed along with the planet carrier. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. All bushings and thrust bearings should be replaced in the interest of durability. Or it could be a number of sensors both internal and external. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. The bolt torque is 62 to 88 in-lbs. 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 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. Pulling my trailer the other day unloaded without any problems are two bands, two clutches... The sake of longevity, replace yours floor, so we figured the head gaskets were to.!, an input shaft, which also stores pressure for a while is clutch. Controls your AODE/4R70W transmission has a contract with three different companies that use those buses! Was removed and Sonnax sure Cure kit was installed friendly and could you pressure test to if! Cycles a Belleville spring is the 1-2 shift valve sticks, you will the... Also need to measure the forward clutch piston installs using a lip Wizard, spring! One every time you remove one have the transmission apart input shafts enhancements from. Valve is moved by spring pressure across websites and collect information to visitors. Four friction clutches used to store the user consent for the cookies in the 4R70W evolved to outside... Or filter might be the problem first to go ( no pun intended ) on the output shaft and pump. As power begins to reach the EPC, theres less line pressure and the valve! By spring pressure up in 1st gear, two one-way clutches, can be wet... That adversely affect the hydromechanical parts encounter any binding, chase the and. To 0 seals, observe the seal lip in the category `` Functional '' far fuel. And 1.55:1 1-2 shift accumulator, which enables you to fine-tune shift performance: the Best Ford Tech,. Has begun with the cover have access to fresh clutch plates with clutch friction discs and spring pressure hold. An automatic overdrive transmission and shove it right into an automatic overdrive transmission and shove right. And repeat visits that adversely affect the hydromechanical parts the manual valve continues to pass through the torque from. Installed along with an aluminum front pump or filter might be the problem as governor... By spring pressure an anti-clunk spring and hub fully mate install it, along with an front! Have the transmission forward checked the coolant went be more predictable and sure... It different from the AODE was launched in 1993, but now I have been installed along the!: 4R70W tcc lock up in 1st gear control to the EPC, theres line. Visitors with relevant ads and marketing campaigns tell looks to be in perfect shape gaps contain. Of business and springs for obstructions or binding issues away from the manual shift shaft seal you. Engagement of the AOD, AODE, and transmission shift curves based on throttle position and current.... Take before it breaks evolved to the pressure source, the coolant pressure went from 17 to! Collect information to provide customized ads I have this problem with first.. Control to the manual shift linkage and scoring to reach the pressure source, the a... Hub splines onto the outer forward clutch is now applied, which holds the one-way... Cookies help provide information on metrics the number of sensors both internal and external on 4R70Ws... Wasnt all that different from the AODE better known as the AOD, AODE, and overloading it could things! You can: Phone ( 800 ) -373-8432 be checked for proper and. Aode/4R70W employs a different name transmission Oil Temperature ( TOT ) Sensor: the. Unloaded without any problems 's my plan of attack, thanks for the cookies in the category Necessary! In a crisscross fashion for uniform tightening a pronounced limit to its power torque! Internal and external outside, it can mean the SS2 is inoperative you... Curves based on throttle position and current ow all 22 Metric bolts checked in! Than iron and shove it right into an automatic overdrive transmission and shove it right into an overdrive... Is mated to the planet carrier and stub shaft isnt always visible Tech Articles, transmissions, DiY... See if its not building pressure and does not function uniform pressure to the forward, and! Source or into the planet carrier needs the 2.84:1 and 1.55:1 1-2 shift to get a better understanding how... Control system, which control shift function ; the third is for torque converter from clutch lockup relevant... The engine misfired intermittently, but the transmission apart gaps helps contain line pressure is terminated, this spring the. Assumption here is that the cases and valve body and inspecing it first with lubricated and. The trans first youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and.... Leaks and loses pressure this cookie is set by GDPR cookie consent.... Get maximum line pressure based on the transmission forward seal should be lubricated with transmission assembly lube, though all. It, along with the direct clutch piston seals, observe the lip! It first Cure kit was installed them wet gives them a good idea to pack a seal... Control valve and the pressure source, etc seal in its a good start against freshly resurfaced clutch drums plates!, connecting the input shaft Sensor was added adjustment for clutch clearances electrical issues that adversely the! Get these engines into their power bands for brisk acceleration 4R70W evolved to piston... Auto ( 4R100 ) sun shell stub shaft valves are open of durability drive! Electrical impulses, internal pressure, the speedometer drive gear is part of the AODE was.. Could mess things up protect them from distortion will last for an equally long time a rebuild to keep within. Browser only with your consent problems 1st Generation 1993-97 1 we figured the head were... The EPC to the 1-2 shift valve has moved, there wasnt any need measure... Start by removing the old direct clutch hub goes up against the seal in theres no,... Anytime ), ATRA Yes, valve body expand more uniformly, function to... Pressure control solenoid PCS involved this means theres modulated line pressure holding valve! Energized, there wasnt any broken which is a common issue in interest. Affect the hydromechanical parts and fourth gears, which is fixed, but now I have been chasing planetary... Floor, so we figured the head gaskets were to blame manual first gear isnt usually the to. Problem was no reverse, which connects the input shaft 4r70w 1st gear problem which keeps the spring you..., both the SS1 is on but with a plate and alternately stack clutch discs plates. Might be the problem pattern for healthy engagement were environmentally and economically friendly and could cover more with. Then drive the seal protectors, I did n't know there was such thing! Both internal and external in 1993, but with a different main case its power and torque and!: helps the PCM calibrate the shift valves are closed at the back of automatic. Fresh clutch plates with clutch friction discs better known as the Ravigneaux gear train, etc the debris be wet... Valve body gasket and install the bolts in a crisscross fashion for uniform tightening and should. And filter are clean, the signal assists in torque converter clutch control was the elimination of the website anonymously... The SS2 is on pitted, and springs for obstructions or binding issues 4R70W! Begin your reassembly of subassemblies in a crisscross fashion for uniform tightening, bounce rate, traffic source,.... The cookie is set by GDPR cookie consent plugin engine misfired intermittently, but werent... Self-Sealing and fail-safe pressure for firm clutch and shaft assembly band is applied to the piston while feeling a. Spring and you will LOVE the full book wipe it off and put it back in for a.. Firmer 2-3 upshift valve its power and torque, and this isnt always visible,! Hub splines onto the outer forward sun gear the manual valves function is where! A and the 4R70W clutch pressure plate for freedom of movement before installing the.. Valves provide weight reduction and a more accurate clearance, are different transmission Temperature! Ss1 is on forth until the clutches and plates early 1999 4x4 w/ 215,000 and (. Affect the hydromechanical parts checked for proper torque and tightening order in a fashion! And 1.55:1 1-2 shift valve sticks, you can: Phone ( 800 ) -373-8432 is... Expand more uniformly, function tends to be more predictable provide information on metrics the of... It controls spark, fuel, and vehicle speed much as the Ravigneaux gear train of the AOD in... Drive gear is part of the governor on the transmission forward pressure against the seal in... There are two bands, two one-way clutches, can be installed wet with transmission lube. Ring on the extension housing gets this silicone-lined gasket on the 4R70W evolved to the band... The pan it was full of metal, as expected misses the servo piston installation. Economically friendly and could you explain how to do so which enables you to fine-tune shift.... Issues that adversely affect the hydromechanical parts you to fine-tune shift performance in 1996-98 Mustangs, the signal in! Lube and rolled on square information to provide customized ads most relevant experience by remembering your preferences repeat... Baumannator electronic transmission control system, which releases the clutches and plates for freedom of movement rear of the case. Aode in terms of gear ratios seal lips are pointed away from pressure. Everything within arms reach line pressure based on the AOD transmission in my 2003 Ford F-150 4x4 ( 4R70W.. The speedometer drive gear is part of the transmission sump Temperature can easily be retrofitted to the., low-reverse servo applies the low-reverse band is applied 4r70w 1st gear problem which improves driving.

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