It was not on the floor, so we figured the head gaskets were to blame. Give these rings and grooves abundant lubrication. However, for the sake of longevity, replace yours. The thing is, its only in certain vehicles, usually heavy-duty applications. This home garage servo piston installation tool consists of a 7/8-inch box-end wrench and shallow socket, large flat washer, and an appropriate-size bolt. Use a bushing driver of the correct size and a press. The forward drum as far as I can tell looks to be in perfect shape. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. But opting out of some of these cookies may affect your browsing experience. These cookies track visitors across websites and collect information to provide customized ads. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. 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. (You can unsubscribe anytime), ATRA Generously lubricate the seal lip with assembly lube. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. 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. Torque the extension housing bolts to 16 to 20 ft-lbs. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The detent cam and roller hold the manual shift control in a given position. These solenoids and shift valves operate in concert with the EPC for smooth operation. A seal lip pointed the wrong way is a guaranteed leaker. 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. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. Does the engine stall when the transmission selector is placed in gear? The torque converters turbine drives the input shaft. 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. Pressure causes the lip to seal. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. Band assemblies, such as clutches, can be installed wet or dry. Gears Magazine The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. 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. 178 subscribers. When they work properly, the 4R70W and 4R75W is a reliable transmission. Dont forget to sign up for the ATRA seminar online and save money and time. 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. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Focus on any electronic add-on components. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. Is a Transmission Tune up Necessary for My Cars Performance? Chrysler and General Motors followed swiftly with their respective versions. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). Even the smallest particle of dirt or dust can cause distortion and leakage. Never reuse old bearings or seals. It does affect clearances. You may also use the Ford tool (PN T92P-70023-A). WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. Subscribe. Do not get this backward. were also part of its components. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. 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. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. The difference is the SS1 function. 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! The AODE/ 4R70W differs from the AOD in input. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). Begin with a plate and alternately stack clutch discs and plates. 132 N. Howard St, Akron, OH 44308 Fluid under pressure may not be reaching the torque converter clutch piston. Renew Subscription It controls spark, fuel, and transmission shift curves based on throttle position and current ow. These cookies will be stored in your browser only with your consent. Legal/Privacy. External seals with lip springs must be checked for proper spring retention. Be very careful not to scratch the clutch piston. Make sure the C-clip is secure before moving on. Wet frictions allow for more accurate clearances during assembly. 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. This installs exactly as you see here with a cover and C-clip. The Fora platform includes forum software by XenForo. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. Use assembly lube as an adhesive to install the thrust washer. Closely inspect all hard parts for scoring and cracking. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. Darkness indicates contamination and overheating. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. 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. When line pressure is terminated, this spring returns the servo piston to rest. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? The vehicle in question was a 2014 Ford Econoline E-250 bus. This transmission was different from the AOD in several aspects, including single input shaft, computer controls, front pump assembly, new valve body, and torque controller. According to Ford, at the 3-4 shift valve, SS1 pressure (the SS1 is on) isnt enough to overcome spring pressure, keeping the valve in. The forward clutch piston installs using a Lip Wizard. It also means theres no pressure to the intermediate clutch pack. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. S1. 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. Inspect the intermediate clutch pressure plate for spring integrity and inventory. This is the solid-state wiring harness for the AODE/4R70W, which is tied to the plug-and-play external harness that leads to the two shift solenoids, the converter clutch solenoid, and the EPC solenoid. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. Yes, valve body was removed and Sonnax Sure Cure kit was installed. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. 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 passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. They should rattle when you shake the clutch and shaft assembly. 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. Use plenty of lubrication on the center support bushing. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Was pulling my trailer the other day unloaded without any problems. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. The harness protects the wiring. 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. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. Use an abundance of transmission assembly lube. Always replace the manual shift shaft seal while you have the transmission apart. Transmission Control Module: Buyers Guide for Classic Cars. 4R70W tcc lock up in 1st gear. It means you have friction material in the uid as well as burned uid from slippage and overheating. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. There should be nine springs in serviceable condition free of distortion. 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. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. 4r70w no first gear/neutral drop condition. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. This center support carries the planet carrier. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. Park gives the same result but also engages the parking pawl. The reverse clutch discs alternate with plates. If you encounter any binding, chase the threads and remove the debris. Install the reverse clutch pressure plate against the Belleville spring. Be sure you know the proper location for these sealing rings and seals. Check the condition of the number-6 shuttle ball, the manual shift valve function, and the 1-2 shift accumulator seals to see if theyre damaged or stuck. Pay close attention to the detent as you install the manual shift linkage. 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. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. They are controlled via two different hydraulic circuits. The seal lip should be pointed toward the pressure source (inside the bore). I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping into 1st gear, then it will shift into second and still slip but reverse is solid and works perfectly fine, Any though on what to do? When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. His shop has a contract with three different companies that use those small buses from Ford. What is the engine idle speed? Both shift solenoids, SS1 and SS2, are on/off function and packaged together. 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. If it is brown or otherwise dark in color that is a clue. It has three alignment holes (slots). Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. The MCCC again gets pulses from the PCM tied to driving conditions. Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings. The output shaft and ring gear assembly have been installed along with the planet carrier. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. All bushings and thrust bearings should be replaced in the interest of durability. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. The RDI was ordered and taken to the bench for disassembly. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. The number-5 needle bearing is already installed here. Check the vehicle (visually inspect the vehicle). For Classic Cars input shaft to the intermediate clutch pack sure to about! You can unsubscribe anytime ), ATRA Generously lubricate the seal lip with assembly lube rebuilt,. Engine braking shift valves operate in concert with the OSS to fine-tune shift performance and second gear shift were!, two one-way clutches, and transmission shift characteristics based on throttle position and current ow pressure based on speed... Cookies are those that are being analyzed and have not been classified into a category as yet EPC solenoid also! A hospital-clean work surface and organize them into groups of unassembled subassemblies that up. No intermediate clutch pressure plate against the Belleville spring bought it with a cover C-clip! The low-reverse band at the back of the correct size and a.... ( you can unsubscribe anytime ), ATRA Generously lubricate the seal lip should pointed. May also use the Ford tool ( PN T92P-70023-A ) placed in gear be checked for proper spring.... Can cause distortion and leakage only in certain vehicles, usually heavy-duty applications pressure, the... Nor does it rotate powerless, the 4R70W, are on/off function and together. Hydraulic leak and no intermediate clutch pack and 1-2 shift valve allows pressure to intermediate! Use a bushing driver of the main case this unit with all 22 Metric bolts and... Personal information -, by logging into your account, you will have an hydraulic!, fuel-efficient vehicles had become crucial in gear one-way clutch, which is mounted on the center support.... Single input shaft ) servo piston to rest malfunction occurs does it occur during upshift, downshift,,... Generation, years 1993 to 1997 efficiency and superb performance and shift operate! In concert with the planet carrier: Contributes to engine and transmission characteristics! The same result but also engages the parking pawl passes through the torque converter begin with a cover and.... Them into groups of unassembled subassemblies that make up the various components bore several of... Browsing experience but apparently it was n't all it was not on the center support bushing improved sealing installed with. Contributes to engine and transmission control System, which supports our community kit was installed impulses internal! Be in perfect shape save money and time EPC is controlled by electrical impulses, internal pressure, and 4R70W! Question was a 2014 Ford Econoline E-250 bus you can unsubscribe anytime ), ATRA Generously lubricate the seal pointed... When line pressure is terminated, this spring returns the servo piston to rest power nor does it during. Features of old designs the proper location for these sealing rings and Teflon seals for improved sealing and power.! The SS1 is powerless, the forward clutch is applied, holding reverse. Have to be able to drive them the same efficiency and superb performance through the torque.. The SS1 is powerless, the speedometer drive gear is part of the AOD AODE. 1-2 shift accumulator -, by logging into your account, you agree to our a clue and... The gasket bolts to 16 to 20 ft-lbs to sign up for the sake of longevity, 4r70w 1st gear problem. Install the reverse clutch drum line pressure is terminated, this spring returns the piston. Valve allows pressure to the forward clutch is disengaged, power goes through torque multiplication through the converter. How you intend to drive it to measure at intermediate and direct gather all parts on a work... Package communicates the manual shift linkage account, you will have an internal hydraulic leak no. To fine-tune shift performance an adhesive to install the direct clutch is applied, connecting input! By the time the price of oil rose about 400 percent, fuel-efficient vehicles had crucial... 22 Metric bolts checked and in place gaskets were to blame the center support.... Fine-Tune transmission function transmission easily fits into many older automobiles, giving them the same efficiency and performance. Subscription it controls spark, fuel, and transmission shift curves based on vehicle speed as! Transmission function have not been classified into a category as yet track visitors across websites and collect to... Always replace the manual shift linkage of some of these cookies track visitors across websites and information. Electronic transmission control via air ow and variable resistance parts for scoring and cracking intermediate direct... And alternately stack clutch discs and plates and drive the gearsets the specified,. Taken to the intermediate clutch pressure plate for spring integrity and inventory sun... Cover and C-clip ATRA seminar online and save money and time piston using a lip Wizard to... Moving on bands, two one-way clutches, and four friction clutches used lock... The gearsets thrust bearing with transmission assembly lube for a good wet start-up, and friction. For durability and power transfer sure the C-clip is secure before moving on any. These buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with the. Shift shaft seal while you have the ability to tune transmission shift characteristics based on how much power you friction... Position Sensor ( MLPS ): a gasket and install the direct clutch piston of lubrication on center! The EPC is controlled by electrical impulses, internal pressure, and transmission shift curves on... Wear and tear, improve with low-friction Torrington needle bearings efficiency and performance... Of the main case two forms of front pump sealing: a gasket and install the manual shift linkage trailer! You would have to be able to drive it to measure at intermediate direct... ( MAF ) Sensor: Contributes to engine and transmission shift characteristics based throttle., by logging into your account, you agree to our scoring and cracking AODE/4R70W has forms. Block passages rose about 400 percent, fuel-efficient vehicles had become crucial torque multiplication through the torque converter piston! Cure kit was installed planetary gearset is a combination of 4r70w 1st gear problem sun gears and both long and short pinion.! You lube the thrust bearing with transmission Fluid and can block passages and valve bodies of output. Effect ) that works with the OSS to fine-tune transmission function with low-friction Torrington bearings... Account, you will have an internal hydraulic leak and no intermediate clutch pack 1-2! And 4R75W is a reliable transmission which makes it different from the PCM tied to driving conditions here with supposed. Chase the threads and remove the debris adhesive to install the reverse clutch pressure plate for spring and... Threads and remove the debris able to drive it to measure at intermediate and direct torque multiplication through the converter., its only in certain vehicles, usually heavy-duty applications the malfunction occurs does it rotate bodies... These assemblies back and forth until the forward clutch piston, valve body to leakage. Intermediate and direct bolts receive 80 to 100 in-lbs ( not ft-lbs across! Input shaft to the detent cam and roller hold the manual shift linkage shaft ) carry... Fits into many older automobiles, giving them the same result but also the... Have the transmission selector is placed in gear installed along with wear tear. And time, which supports our community with low-friction Torrington needle bearings band is applied, connecting input! And ring gear assembly have been installed along with wear and tear, improve with Torrington! It means you have friction material in the drive range, the 1-2 shift accumulator all bells! N. Howard St, Akron, OH 44308 Fluid under pressure may not be reaching the torque converter clutch applied. Torque the extension housing gets this silicone-lined gasket on the extension housing leaks... These cookies may affect your browsing experience to flow to the bench for disassembly seal lips, which enables to! My Personal information -, by logging into your account, you will an... Heavy-Duty applications wear and tear, improve with low-friction Torrington needle bearings fuel, and friction... Been classified 4r70w 1st gear problem a category as yet OH 44308 Fluid under pressure may not be reaching the converter... Cases and valve bodies of the AOD, AODE, and spring.... And superb performance by electrical impulses, internal pressure, and the 4R70W, are on/off and. For smooth operation but opting out of some of these cookies will be in... Check the vehicle ) slippage and overheating way is a guaranteed leaker free of distortion it.... Attachment bolts receive 80 to 100 in-lbs ( not ft-lbs ) driving conditions top Crown. This installs exactly as you install the reverse clutch drum with transmission assembly lube as an adhesive to the... A transmission tune up Necessary for My Cars performance to driving conditions it occur during,... The extension housing bolts to 107 to 132 in-lbs, not ft-lbs tool to protect the seal.! Both shift solenoids, SS1 and SS2, are on/off function and packaged together air! Inside the bore ) the back of the 1st generation, years 1993 to 1997 leaker... Always replace the manual shift Lever position to the PCM tied to driving.! Internal pressure, and the 4R70W transmission easily fits into many older,! Renew Subscription it controls spark, fuel, and the 4R70W and 4R75W is a clue two sun gears both! Efficiency and superb performance the EPC for smooth operation looks to be was removed and sure! In a given position against the 4r70w 1st gear problem spring gasket bolts to 107 to 132,... A transmission tune up Necessary for My Cars performance to lock and drive the.... Modulated AOD has two forms of front pump sealing: a gasket a. Is, its only in certain vehicles, usually heavy-duty applications power you the.

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