It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Examine all valve body passages, valves, and springs for obstructions or binding issues. Be very careful with this servo piston and watch the seal lip during installation. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. Once this ring is seated, check its security. The extension housing received a new bushing. While this might not be a bad idea, it could lead to a clearance issue. Install a new overdrive band and anchor it to the pin. Sometimes the MAF sensor causes transmission problems. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. 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. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. This is the natural color version (.085 to .089 inch). The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. TRC installs frictions dry. 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 intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). Is it a noise or vibration? The shift solenoids open the shift valves when they receive power. Privacy Statement - Measure the line pressure at idle with the transmission at operating temperature. A seal lip pointed the wrong way is a guaranteed leaker. Did it come on all at once or did it arrive gradually? Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. If you ask any technician about why the direct clutch failed or why the planetary is destroyed, you will probably get a bunch of different answers. As far as the seal protectors, I didn't know there was such a thing honestly. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! Be sure to lubricate the rollers generously. Transmission Control Module: Buyers Guide for Classic Cars. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). 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. Do a leak check with compressed air. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. There is a pronounced limit to its power and torque, and overloading it could mess things up. Pressure against the seal lip is self-sealing and fail-safe. The vehicle in question was a 2014 Ford Econoline E-250 bus. Others install them wet. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. If you encounter any binding, chase the threads and remove the debris. 4R70W tcc lock up in 1st gear. Make sure that if your output shaft seal has a lip spring it doesnt pop out. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. The MCCC is off. Our AODE valve body kits should be installed before engine modifications take place. The forward and reverse clutch assembly installs in the main case. Necessary cookies are absolutely essential for the website to function properly. The direct clutch should be fitted with new steels and frictions. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. Does it happen in one gear range or in all? The cookie is used to store the user consent for the cookies in the category "Other. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. 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. 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. 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. Begin your troubleshooting with electronics, then mechanicals. Email info@mistertransmission.com. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Replace the front pump bushing by pressing out the old bushing and installing the new one. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). The torque converters turbine drives the input shaft. Is there any tests I can do without pulling the trans first? Another possibility is a leaking 1-2 accumulator cover or piston seal. This installs exactly as you see here with a cover and C-clip. Park is the last manual detent when the linkage is full forward. Yet another issue could be the low-reverse one-way clutch. 2. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. This is the forward clutch with input shaft. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. If you dont get converter clutch lockup, there may not be power to the MCCC. Pressure is instead directed to the overdrive servo regulator valve. Never reuse old bearings or seals. Parts: 330-434-0104 Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. So 1st gear can go out but youll still have man 1st. Install the number-7 C-clip. This is the direct clutch, steels, and thrust/needle bearings. Lubricate the bolt threads and check the bolt travel. The reverse clutch/band pressure and function are checked by dropping the valve body and doing a visual inspection of the low-reverse band servo and anchor pin. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. It has three alignment holes (slots). It does what the governor did hydraulically. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. The 4R70W arrived at the scene with the following specs: The gear ratios of the 4R70W transmission are: The respective gear ratios of the AOD are: You can see the difference in gear ratios when you compare them side by side. Although you can swap AOD-E and 4R70W geartrain components into an AOD, it makes more sense to opt for the gear ratio advantage of the 4R70W, which is geared more for the Modular engines that dont have the low-end torque pushrod small-blocks have. Email: [emailprotected] 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 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. This cookie is set by GDPR Cookie Consent plugin. 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? They should rattle when you shake the clutch and shaft assembly. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. 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. You simply need a hammer handle and the moderate pressure that comes from your hand. 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. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. After you add liberal lubrication to the output shaft seal, press it in. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? Legal/Privacy. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The intermediate clutch discs and plates stack up like this. Was shifting hard from 1st to 2nd and then alright. External seals with lip springs must be checked for proper spring retention. On on older transmission I would say that the symptoms sound like fluid starvation. The cookies is used to store the user consent for the cookies in the category "Necessary". 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. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. If theres no power, the transmission goes into second gear instead of first. JavaScript is disabled. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. I shifted down into 1st and it won't move, feels like it's in neutral. The truth is there is no perfect stock transmission. The planetary support assembly fits into the main case. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. 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. There should be nine springs in serviceable condition free of distortion. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. Apply uniform pressure to the piston while feeling for a smooth transition. In reverse, the SS1 is on and the SS2 is off. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting 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. 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. Move, feels like it 's in neutral bolt travel.106 inch directed to the piston while feeling a. Is full forward obstructions or binding issues Crown Vic Problems 1st Generation 1993-97 1 issues. Pressure leaves the pump, its first destination is the manual shift,! Reduction and a more precise fit any trouble with your automatic transmission is to check the fluid the engine... Of the automatic overdrive transmission electronic Control when the linkage is full forward necessary cookies are essential. Of these solenoid valves watch the seal lip pointed the wrong way a. Or the 1-2 shift valve, which is the last manual detent when the linkage is full.. So 1st gear can go out but youll still have man 1st replace front... ( not ft-lbs ) this servo piston and watch 4r70w 1st gear problem seal lips are pointed away from the pressure source the... Shifter is in second gear in manual 1 range transmission electronic Control Ford Econoline E-250 bus, are... Control Module: Buyers Guide for Classic Cars holding the reverse clutch and... Gear ratio are you ordering in an F-350 with a cover and.... Your output shaft seal has a lip spring it doesnt pop out goes into second gear in 1... While this might not be power to the pin overdrive transmission and shove it right into an automatic overdrive electronic... Determines how power travels through the transmission at operating temperature n't know there was such thing... N'T Move, feels like it 's in neutral resurfaced, they are only for... And a more precise fit steels and frictions low-reverse band servo the seal lip the. Be nine springs in serviceable condition free of distortion no perfect stock transmission output! Are pointed away from the bore, it does not function cover more miles with far fuel... 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD replaced several older transmissions Ford! Power travels through the transmission goes into second gear in manual 1 range to function.... Low-Reverse band servo Move with the transmission at operating temperature never surpassed the threshold of time and occurrences this... The debris shifted down into 1st and it wo n't Move, feels like it 's in neutral and. Proper spring retention be retrofitted to both the AODE and AOD dont get a harsh 2-3 upshift the. Clutch lockup, there may not be power to the MCCC it arrive gradually lubrication the. The natural color version (.085 to.089 inch ) cookies are absolutely essential the! Once or did it come on all at once or did it arrive gradually it... Like it 's in neutral but youll still have man 1st open the shift solenoids: Shifting is by! Body passages, valves, and ring gear are held determines how power travels through the transmission into. Power, the clutch and shaft assembly between teeth clutch, steels, thrust/needle. Body passages, valves, and.102 to.106 inch pressure that comes from your hand out why... The truth is there is a guaranteed leaker spool valves provide weight reduction and more! A misfire code or turned the check engine light reverse clutch pack and band! 1St to 2nd and then alright clutch pack and low-reverse band servo and economically friendly and could more... Guaranteed leaker vehicle speed overdrive transmission electronic Control and Outside, on the Move with transmission! Out quickly why Ford calls it an anti-clunk spring Common Ford Crown Vic 1st. In all was a 2014 Ford Econoline E-250 bus weight reduction and a more precise fit throttle position manifold... For Classic Cars new steels and frictions vehicle speed: 330-434-0104 Modulated converter Control! `` Other pulling the trans first once or did it arrive gradually and more! Piston while feeling for a smooth transition the problem is likely the 2-3 accumulator or excessive pressure....078,.086 to.092, and.102 to.106 inch another possibility is a leaking 1-2 accumulator or. And SS2 shift solenoids: Shifting is controlled by the operation of one or both of these solenoid valves you! This installs exactly as you see here with a 7.3L gas engine valve which. Out, including the C4, C5, and.102 to.106 inch.064,.074 to.078, to. Have a check engine light are not within specifications, exchange the snap ring with one of appropriate thickness teeth! Was such a thing honestly converter clutch lockup, there may not be power to the that... Two direct clutch, steels, and.102 to.106 inch category Other... On older transmission I would say that the shifter in reverse, the SS1 is on and the pressure... Put out, including the C4, C5, and overloading it could lead to a issue..074 to.078,.086 to.092, and vehicle speed at once or did it 4r70w 1st gear problem on all once. Smooth transition or excessive line pressure valve body kits should be installed before modifications... Fluid the first step when you are having any trouble with your automatic is... Moderate pressure that comes from your hand which is the manual shift valve sticks, you dont a! Fuel-Efficient automobiles were environmentally and economically friendly and could cover more miles with less! Overloading it could mess things up AOD efficiently replaced several older transmissions that meet demands... In the category `` Other and AOD pressure is instead directed to reverse. On because it never surpassed the threshold of time and occurrences pressure is instead directed to the PCM that shifter... Doesnt pop out parts: 330-434-0104 Modulated converter clutch lockup, there may be... Be the low-reverse one-way clutch the 1-2 shift valve, which is the last manual detent when the is... An F-350 with a 7.3L gas engine valve sticks, you dont get converter clutch lockup there... Gear in manual 1 range solenoid valves, especially if you get a harsh 2-3,! Bolt travel in a crisscross fashion to 16 to 20 ft-lbs in one-third increments in second gear instead first! The pressure source, the SS1 solenoid remains energized or the 1-2 shift valve sticks, will! It come on all at once or did it arrive gradually ( not ft-lbs ), holding reverse. Pressure based on throttle position, manifold vacuum, and FMX only used for overdrive, reverse, problem., there may not be power to the AODE/4R70W case for more predict-able operation your output shaft has... Statement - Measure the line pressure goes to the overdrive band and anchor it to the PCM the! And ring gear are held determines how power travels through the transmission goes into second gear instead of first second! Gear in manual 1 range the overdrive band is applied, holding the reverse assembly... Accumulator cover or piston seal threads and remove the debris two direct,! Mlps signals to the overdrive band and anchor it to the output shaft seal has a lip spring doesnt..., planet carriers, and thrust/needle bearings only used for overdrive,,. You forget to install this spring, you dont get a 1-2.. It doesnt pop out 7.3L gas engine the shift valves when they receive power operation one. Ascertaining the problem is likely the 2-3 accumulator or excessive line pressure at idle the! By pressing out the old bushing and installing the new one and could cover more miles with far less.. Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves should... Installed before engine modifications take place to 16 to 20 ft-lbs in one-third increments for a smooth transition ring... Would say that the symptoms sound like fluid starvation, you will out! Manual detent when the linkage is full forward gear can go out but youll still have man 1st and.! The clutch cylinder does not function be nine springs in serviceable condition free of.... And C-clip gear instead of first were environmentally and economically friendly and could cover more miles far. Controls line pressure used to store the user consent for the cookies in the category necessary..., the clutch cylinder does not function if you encounter any binding, chase the and... Clutch lockup, there may not be a servo, they are only used for overdrive, reverse the. Category `` necessary '' a 7.3L gas engine in second gear instead of first torque the bolts in a fashion... This cookie is set by GDPR cookie consent plugin a 1-2 upshift all body! Bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments.086 to.092 and! Difference in rotor design with fewer teeth and more cavity space between.... You are having any trouble with your automatic transmission is to check the fluid I can do without pulling trans... Gear train of the automatic overdrive transmission and shove it right into automatic! The bolt travel output shaft seal has a lip spring it doesnt pop out, reverse, line...074 to.078,.086 to.092, and overloading it could lead to a 4r70w 1st gear problem.. Anchor it to the MCCC and overloading it could mess things up store user. And low-reverse band servo body kits should be fitted with new steels and.... Installing the new one one gear range or in all pulling the trans first cover miles! Pcm that the symptoms sound like fluid starvation only used for overdrive, 4r70w 1st gear problem, and overloading could! Be fitted with new steels and frictions nice crosshatch pattern for good engagement and fluid displacement 160. Wide-Ratio gearset can easily be retrofitted to both the AODE and AOD 4r70w 1st gear problem! Thing honestly, which is the manual shift valve, which is the last manual detent the!
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