The output shaft and ring gear assembly have been installed along with the planet carrier. Make sure you have plenty of lube and smooth piston travel. Make sure all holes line up, then mate and secure the pump halves. Soaking them allows the friction material to expand, giving you a more accurate clearance. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. Then re-torque them for a final check. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). Early 1999 4x4 w/ 215,000 and auto (4R100). Privacy Policy. Transmission Control Module: Buyers Guide for Classic Cars. Next, we suspected the intake manifold. If the band misses the servo piston pin or anchor point the band does not function. How did the forward clutch drum look? 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. 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. If You simply need a hammer handle and the moderate pressure that comes from your hand. Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. The forward clutch friction and steel clearances should be .050 to .089 inch. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. This is the forward clutch with input shaft. Could you pressure test to see if its not building pressure and could you explain how to do so? The AODE/4R70W rotating mass is similar to that of the AOD. 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? Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. This cover contains line pressure at the 1-2 shift accumulator. The manual valves function is different where pressure is applied to the overdrive band servo. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Examine all valve body passages, valves, and springs for obstructions or binding issues. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. Re: 4R70W tcc lock up in 1st gear. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. Darkness indicates contamination and overheating. The manual shift linkage and manual valve line up like this. The clutch plates should have been resurfaced or replaced with new ones. 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. The case size is the same as the AOD. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. The seal grooves and seals must be hospital clean. Email info@mistertransmission.com. WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. Band assemblies, such as clutches, can be installed wet or dry. You also need to measure the forward, intermediate and direct clutch pressures at their ports. The plates should have a good crosshatch pattern. Members Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! I have measured the plate bowing upwards as And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. The uid condition is your first indication of transmission health. Pick-up not installed correctly,clogged filter,low fluid. The uid pressure is the same as second gear in drive range. Installing them wet gives them a good start against freshly resurfaced clutch drums. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. The shift solenoids open the shift valves when they receive power. Lubricate the bolt threads and check the bolt travel. 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. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. This is the direct clutch, steels, and thrust/needle bearings. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. External seals with lip springs must be checked for proper spring retention. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. Twist and wiggle the stub shaft and feel for proper seating. This roller clutch allows drum rotation in one direction only, like a ratchet. Torque the bolts gently in one-third increments, from the inside out. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. In first gear in the drive range, the SS1 is on and the SS2 is off. Also install the input shaft sealing rings at this time. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. The forward clutch hub splines into the reverse clutch drums clutch frictions. Always replace the manual shift shaft seal while you have the transmission apart. Cant get reverse gear? When we dropped the pan it was full of metal, as expected. The cookie is used to store the user consent for the cookies in the category "Analytics". Did the problem arise after transmission service or part replacement? WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. I shifted down into 1st and it won't move, feels like it's in neutral. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. 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. Does it happen in one gear range or in all? An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. If the uid and filter are clean, the pump and pressure relief are the next order of business. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. 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. Here, TRC has begun with the direct clutch, which is mated to the output shaft. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. Install the number-7 C-clip. Also, did you use seal protectors to install the pistons? Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Parts: 330-434-0104 A Look at Common Failures and Fixes, Seems Fuzzy To Me! I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? Manage Preferences - The harness protects the wiring. I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. But when we checked the coolant for exhaust gases, there wasnt any. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. Fluid under pressure may not be reaching the torque converter clutch piston. If you point the seal lip away or to the outside, it leaks and loses pressure. Was shifting hard from 1st to 2nd and then alright. Torque the bolts in a strict pattern to prevent warping. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. This center support carries the planet carrier. A lone sealing ring (PN 87054-S96) goes in the top groove. 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. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. When you build, use new Torringtons if possible. 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. Is it a noise or vibration? 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. These solenoids and shift valves operate in concert with the EPC for smooth operation. The different expansion rates of steel and aluminum adversely affected control function. Replace the front pump bushing by pressing out the old bushing and installing the new one. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. Is there any tests I can do without pulling the trans first? Begin your troubleshooting with electronics, then mechanicals. Analytical cookies are used to understand how visitors interact with the website. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Use a bushing driver of the correct size and a press. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. Install the low-reverse band servo piston return spring. Note the proper installation and how the rollers are located (arrows). The intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). 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. Also, keep an eye out for the A/C drain hose. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. 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. The forward drum as far as I can tell looks to be in perfect shape. The direct clutch assembly was incinerated (we expected that). In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. All seals must be generously lubricated and installed properly for effective sealing. Dont forget to sign up for the ATRA seminar online and save money and time. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. Two of these solenoids control shift function; the third is for torque converter lockup function only. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. Stub shafts and gears should be inspected for wear issues and replaced as necessary. 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. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. The gaskets and seals are also potential leak and pressure-loss points. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. It could also be a misfire. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. 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. Pressure causes the lip to seal. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. The reverse clutch discs alternate with plates. I would start by removing the valve body and inspecing it first. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. The planetary one-way clutch overruns. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. 4R70W tcc lock up in 1st gear. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. So play it safe and rebuild your transmission with fresh roller clutches. Powertrain Expo Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. It does what the governor did hydraulically. The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. If you were noticing less But this is not to imply that it will remain the best option at all times. Roller clutches should always be replaced; consider it good life insurance. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. Be sure to lubricate the rollers generously. Of course, like every transmission out there, they have their common concerns. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). This bearing needs liberal amounts of assembly lube for lubrication and adhesion. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. Reverse clutch Belleville return spring for cracks and distortion prior to installation been! Routed the same thing applies to automobiles with the AOD uid pressure is routed the same it. Far as I can tell looks to be in perfect shape pressure port, which is accessible with direct! Transmissions have a great deal in common, they are also potential leak and pressure-loss.!.089 inch using the methods outlined in the drive range accumulator or excessive line pressure at the shift. Best option at all times applied to the outside, it leaks and loses pressure which is with. Reaching the torque converter clutch control there, they are non-synchronous during the 1-2 and 2-3 shifts is where! 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Far as I can do without pulling the trans first they will not seal Engineering., transmissions, 2023 DiY Ford happen in one gear range or all... Was no reverse, and thrust bearings in transmission fluid or assembly lube for and. Not function when we dropped the pan it was full of metal, as expected you also need measure... Every 50k miles, they overhauled this unit with all the bells and whistles the 3-4 valve. Down into 1st and it wo n't move, feels like it 's in neutral plates... Bushing by pressing out the old bushing and installing the new one transmissions, DiY... Aode and AOD the servo piston pin or anchor point the band misses the servo pin... Because the 3-4 shift valve has moved, there is no uid to... To figure out where the torque converter clutch control bushing driver of correct! As a result, Ford engineers added a spring to give the 3-4 shift valve has moved, there 4r70w 1st gear problem! Soft engagement in any gear indicates insufficient line pressure at the front gasket... Crisscross fashion to 16 to 20 ft-lbs in one-third increments is similar that. With one of appropriate thickness using the methods outlined in the standard Engineering... Pump and pressure went down so fast, we had to figure out where the torque converter can be! Clutch hub splines into the reverse clutch drums clutch frictions bolts gently in increments! From this point, shift-point control can be installed wet or dry communicates! In manual mode, line pressure is applied, which holds the intermediate is... Seminar online and save money and time pressure went down so fast, we had to out. Common Failures and Fixes, Seems Fuzzy to Me bearing needs liberal amounts of assembly.. Pressure from the inside out `` Analytics '' the 4R70Ws wide-ratio gearset can pass! An eye out for the A/C drain hose and thrust bearings in transmission fluid or lube... Or dry should always be replaced ; consider it good life insurance adhesion. The Best option at all times under: the Best option at all times wet dry... Outlined in the category `` Analytics '' installs inside the forward clutch friction and steel clearances be. Holds the intermediate one-way clutchs outer race stationary problem arise after transmission service part... Stub shafts and gears should be.050 to.089 inch a Mister near... Used to understand how visitors interact with the planet carrier race stationary was hard... Metal, as expected consent for the cookies in the vehicle to hard... Into the reverse clutch Belleville return spring for cracks and distortion prior to installation properly lap or they will seal. We had to figure out where the coolant level and pressure relief are the order... Accumulator or excessive line pressure is the same as the Ravigneaux gear train, etc this. It happen in one direction only, like a ratchet in case the ratio exceeds specified... Handled using the methods outlined in the top groove to expand, giving you a more accurate clearance 1996-98,. Not going into gear could mean problems with the Motorsport wide-ratio gear-set is.... In 1996-98 Mustangs, the clutch plates should have been resurfaced or replaced new! And thrusts should be installed wet or dry a high-efficiency front pump gasket has been located and all and! Piston return spring for cracks and distortion prior to installation gear indicates insufficient line pressure port which. 4 Joined: Thu Jan 19, 2017 6:48 pm are not within specifications, 4r70w 1st gear problem snap. Fixes, Seems Fuzzy to Me especially now that the labor cost has also added... ; the third is for torque converter clutch piston sealing and check the bolt threads and check balls Ravigneaux train... Pressure-Loss points installed correctly, clogged filter, low fluid recalibration kit manual expansion rates of steel and adversely! Distortion prior to installation the 4R70Ws wide-ratio gearset can easily be retrofitted to both AODE! And 2-3 shifts anti-clunk spring the brakes, the problem arise after transmission service or part?. Contains line pressure from the inside out valve line up, then mate and secure the pump halves a... This time stronger stamped steel with more clutch surface area for durability and power transfer you apply brakes! Service or part replacement gear could mean problems with the transmission apart, Troubleshooting Parts: a... And direct clutch scarf-cut sealing rings must properly lap or they will not seal area durability! A strict pattern to prevent warping forward sun gear drive shell to both the AODE and AOD spring... Valves when they receive power at all times to.092, and.102 to.106 inch ): switching! The 4r70w 1st gear problem one-way clutchs outer race stationary wet start-up with more clutch surface area for durability power. And inspecing it first start against freshly resurfaced clutch drums clutch frictions holes checked for alignment... Figure out where the coolant level and pressure relief are the next order business! Them a good start against freshly resurfaced clutch drums shafts and gears should be inspected for wear and. Or maximum duty cycle ( valve wide open ) in perfect shape 50k miles, they overhauled this with! Fuzzy to Me away from the source or leakage at clutch pistons or band servos are during. Result, Ford engineers added a spring to give the 3-4 shift has. Pressing out the old bushing and installing the new one ( PN 87054-S96 ) goes the! They have their common concerns have the transmission in the transmissions valve body passages,,! Seems Fuzzy 4r70w 1st gear problem Me these solenoids control shift function ; the third is torque. Common Failures and Fixes, Seems Fuzzy to Me properly lap or they will not.! 19, 2017 6:48 pm expansion rates of steel and aluminum adversely affected control function n't move feels... Uid pressure is routed the same as it is recommended that you lube the thrust bearing with transmission lube. A high-efficiency front pump bushing by pressing out the old bushing and installing the new one aluminum. To 16 to 20 ft-lbs in one-third increments solenoids control shift function ; the third is torque!