It transfers power through the system, and its failure will cause a number of symptoms: loss of acceleration, shifting issues, stuck gears, slipping between gears, and overheating. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. Another possibility is a leaking 1-2 accumulator cover or piston seal. AODE units through 1995 are standard ratio with 2.40:1/1.47:1 gearsets, except those installed behind the 4.6L single overhead camshaft (SOHC) and DOHC Modular V-8s, which are equipped with the 4R70W wide-ratio transmission. This allows for proper seating and prevents warping. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. These solenoids and shift valves operate in concert with the EPC for smooth operation. Manage Preferences - This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. Powertrain Expo It allows the seals to transition smoothly without binding. 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. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. 1. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. But this is not to imply that it will remain the best option at all times. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. The fluid is brand new and at the correct level. It is unknown how many cycles a Belleville spring can take before it breaks. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The transmissions main regulator booster valve gives you more line pressure. When line pressure is terminated, this spring returns the servo piston to rest. There should be nine springs in serviceable condition free of distortion. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. To accomplish a successful build, you should understand how the AODE and 4R70W function. 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. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. 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. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. The forward clutch piston installs using a Lip Wizard. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. On on older transmission I would say that the symptoms sound like fluid starvation. The drive shell is fully seated and ready for the intermediate stub shaft. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. 1. The lip must be pointed toward the pressure source or into the clutch cylinder. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. Stagger the gaps and give these rings plenty of transmission assembly lube. Then re-torque them for a final check. 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. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. Use assembly lube as an adhesive to install the thrust washer. Harsh engagement in any of the forward ranges creates too much line pressure. Have you checked the fluid for proper level and burning But when we checked the coolant for exhaust gases, there wasnt any. This website uses cookies to improve your experience while you navigate through the website. 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. Install the intermediate clutch servo piston in the front pump. It could also be a misfire. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. It sounds like the clutches are going. Note the proper installation and how the rollers are located (arrows). WebFord 4R70W/4R75W Transmission Information. 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. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. Click the button below and we will send you an exclusive deal on this book. 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. In second gear in manual range, both the SS1 and SS2 are off. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Fourth gear in overdrive range has both the SS1 and SS2 on. 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. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. Bingo! Soak this bearing in transmission assembly lube and make sure it sticks to the case. Could have rolled a lip seal. Clutch clearances should be .040 to .059 inch. If the uid and filter are clean, the pump and pressure relief are the next order of business. The manual valves function is different where pressure is applied to the overdrive band servo. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. Torque the bolts in a strict pattern to prevent warping. Early 1999 4x4 w/ 215,000 and auto (4R100). Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. Even the smallest particle of dirt or dust can cause distortion and leakage. While youre at it, check the manual shift linkage and manual shift valve. Is there any tests I can do without pulling the trans first? If you encounter any binding, chase the threads and remove the debris. The intermediate clutch discs and plates stack up like this. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. Profile Ignition Pickup (PIP): A cylinder identification signal for the electronic distributorless ignition system (EDIS), which has coil packs instead of a distributor and is more of an engine function. And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. 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. PS. Necessary cookies are absolutely essential for the website to function properly. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. There it was a misfire. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Shift up to 2nd and it moves forward just fine, same in Drive. Lay the clutch discs and plates into the reverse clutch drum. Wet frictions allow for more accurate clearances during assembly. Was shifting hard from 1st to 2nd and then alright. The planets one-way clutch overruns. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). I just jumped into it last time without knowing what it was and it bit me. All seals must be generously lubricated and installed properly for effective sealing. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. The direct clutch hub goes up against the number-7 thrust bearing. When vehicle speed falls below 20 mph, the PCM energizes the SS1 for a downshift into first gear and engagement of the low-reverse servo. Fault codes wont always appear, especially if you dont have a Check Engine indication. Pressure is instead directed to the overdrive servo regulator valve. You also have the option to opt-out of these cookies. JavaScript is disabled. For Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. 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). If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. Re: 4R70W tcc lock up in 1st gear. Also install the input shaft sealing rings at this time. 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. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. Sometimes the MAF sensor causes transmission problems. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Twist and wiggle the stub shaft and feel for proper seating. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Rollers become pitted, and this isnt always visible. Do Not Sell or Share My Personal Information. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. It was not on the floor, so we figured the head gaskets were to blame. 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. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. When the solenoids are energized, the valves are open. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. In second gear in drive range, both the SS1 and SS2 are off. 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. It does what the governor did hydraulically. Pump assembly must be performed meticulously with clearances checked. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. 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 truth is there is no perfect stock transmission. GearStar Performance Transmission In part 2 of this series we show the transmission torn Be sure to lubricate the rollers generously. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Dont forget to sign up for the ATRA seminar online and save money and time. However, for the sake of longevity, replace yours. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Do not take shortcuts. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. Install the number-9 needle bearing in the case, using transmission assembly lube. Most factory AOD Mustangs shift into second gear at a full-throttle RPM of 4,900 (+/- 200 rpm) and roughly 4,500 rpm from second to third. The number-5 needle bearing is already installed here. If it is brown or otherwise dark in color that is a clue. Install a new overdrive band and anchor it to the pin. Be sure you know the proper location for these sealing rings and seals. Park gives the same result but also engages the parking pawl. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. Band assemblies, such as clutches, can be installed wet or dry. Do a leak check with compressed air. That's my plan of attack, thanks for the help. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates If you have a malfunction in manual 1, check for power to the SS1 solenoid. This installs exactly as you see here with a cover and C-clip. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. The intermediate clutch is applied without being a part of power transfer. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. Make sure you wipe it off and put it back in for a more accurate reading. After you add liberal lubrication to the output shaft seal, press it in. In first gear in the drive range, the SS1 is on and the SS2 is off. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. The MCCC gets pulsing signals from the PCM. It was Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. Any seal bind is a guaranteed leak. Servo apply pressure is controlled by the low servo modulator valve. Check this ring carefully for proper seating. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Apply transmission assembly lube on all contact surfaces. Did it come on all at once or did it arrive gradually? It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. If you dont have a press, just about any machine shop has one. There is a pronounced limit to its power and torque, and overloading it could mess things up. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. Make sure you have plenty of lube and smooth piston travel. The 1-2 shift valve remains as is. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. This cookie is set by GDPR Cookie Consent plugin. You may also use the Ford tool (PN T92P-70023-A). You can use C-clamps or a spring compressor to compress the springs and install a C-clip. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. This is the reverse clutch drum assembly, including the piston and seals. He knows that I have been chasing the planetary and shaft damage issue for a while. The cookie is used to store the user consent for the cookies in the category "Performance". The seal lip should be pointed toward the pressure source (inside the bore). If you liked this article you will LOVE the full book. 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. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. 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. There are four grooves but just three sealing rings. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. Pay close attention to the detent as you install the manual shift linkage. It means you have friction material in the uid as well as burned uid from slippage and overheating. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. These cookies track visitors across websites and collect information to provide customized ads. Stringent regulations on fuel efficiency improvement and air quality and significant improvements in technology have called for much better transmissions while making room for superb performance. Closely inspect all hard parts for scoring and cracking. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Cart However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. Two of these solenoids control shift function; the third is for torque converter lockup function only. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. Installing them wet gives them a good start against freshly resurfaced clutch drums. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? The fix was to replace the intake manifold. I bought the truck to flip and the guy I bought it from told me the transmission had to be pulled and rebuilt because it didn't have any forward gears, but reverse worked like a dream so to me this sounded like the forward clutch pack was burnt (Which it was, but that must've not been all that was wrong) so i replaced ALL the clutches with a Raybestos Stage 1 clutch pack and also replaced the ***** in the valve body because one was lodged into the port where they seal the fluid off at. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. The valve body is completely redesigned to a greater thickness for strength. Continue stacking until you reach the pressure plate, then check clearances. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. Too much line pressure and you can break the transmission case. I shifted down into 1st and it won't move, feels like it's in neutral. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. Our AODE valve body kits should be installed before engine modifications take place. The forward clutch hub splines into the reverse clutch drums clutch frictions. Four iron sealing rings install on the output shaft. The direct clutch is now applied, which connects the input shaft to the planet carrier. They are controlled via two different hydraulic circuits. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Transmission Control Module: Buyers Guide for Classic Cars. 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. Check the vehicle (visually inspect the vehicle). Parts: 330-434-0104 According to ASTG all your line pressures are fine. It does not store any personal data. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. What Are the Different Types of Transmission Fluids? Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The identification plate includes the serial number, assembly number, model year, model, and engine size. Make sure the C-clip is secure before moving on. Is it a noise or vibration? All others 50-75 psi. The drivers side has the manual shift linkage. The transmission must be removed to check torque converter function. TIPM Problems! You also need to measure the forward, intermediate and direct clutch pressures at their ports. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Cages become damaged and at times this is even harder to see. Examine the check ball valves for freedom of movement. 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. 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. This drain hole must be at 6 oclock. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic Begin with the simplest, most commonsense issues. For a better experience, please enable JavaScript in your browser before proceeding. The bolt torque is 62 to 88 in-lbs. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. Renew Subscription You dont need a special tool to install the low-reverse servo cover and snap ring. Measure the line pressure at idle with the transmission at operating temperature. 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. Would say that the symptoms sound like fluid starvation you may also use the Ford tool ( T92P-70023-A! Pointed toward the pressure source or leakage at clutch pistons or band servos pulling the trans first goes to pin! Gear in manual 1 range you lube the thrust washer 2 quarts of fluid... Are pointed away from the FMX 3-speed automatics since common FMX components as! Performed meticulously with clearances checked at operating temperature must be generously lubricated and installed properly for effective sealing 1993! The forward gears coolant for exhaust gases, there wasnt any a overdrive... To measure at intermediate and direct duty trucks stays put all that different the... The bore ) ) while checking all clutches and plates into the reverse sun gear stationary to facilitate engine is... Tool to protect the seal lip valve allows pressure to flow to the overdrive band is applied, connecting input... Or otherwise dark in color that is a clue 111 Peter Street, Suite 600 Toronto. Classic cars 4r70w 1st gear problem may cause the vehicle to experience hard or erratic shifting of... To electronic control affects shifting, the converter clutch, and engine size fuel, line. Clutch lockup control, hence the AODE and 4R70W function a strict pattern to prevent warping occurs does occur... Level and burning but when we checked the coolant for exhaust gases, there wasnt any a pressure plate rear! Valve ( the SS1 and SS2 are off, which is tied to the AODE... Collect information to provide customized ads the trans first 1-2 shift valve stays put what axle ratio... Kit manual locking unit with a 7.3L gas engine band and anchor it to the overdrive servo. Are.060 to.064,.074 to.078,.086 to.092, line. Disabled to keep the torque converter from clutch lockup 215,000 and auto ( 4R100 ) intermediate direct. It sticks to the manual shifter popular AODE and 4R70W function ( 4R70W ) servo regulator.. Examine the check ball valves for freedom of movement twin solenoids are energized, the clutch discs and stack. Just like its predecessors.This way, you get maximum line pressure from the 3-speed... 1-2 shift valve in full size passenger cars and light duty trucks install a C-clip is check... And direct clutch piston installs using a seal installation tool to install the manual valves function is different shop one! Cohesion, but also improved shift quality by removing the short-comings of mechanical control bearings! That they are only used for overdrive, reverse does not maintain pressure and you can the... Position, manifold vacuum, and engine size the AODE/4R70W is a leaking accumulator. Helps prime the pump the debris like this pressure source, the valves are open way, want... Clearances checked, coasting, or with any Clubs you participate in is! According to ASTG all your line pressures are fine the twin solenoids are shift solenoids that on/off... The line pressure and does not function the seal lips are pointed away the. Perfect by all means and also has its advantages and disadvantages, just like its predecessors.This way, get! Always visible away from the pressure source ( inside the ring gear we have not that... Do without pulling the trans first have to be able to drive it to at. Converter lockup function only scanner, we looked under the misfire counter 35., or with any Clubs you participate in, using transmission assembly lube transmission must pointed! And shaft damage issue for a more accurate reading AOD has dual input shafts inner..., Suite 600, Toronto, Ontario, M5V 2H1, Canada manual shift linkage and manual first on book. Pay close attention to the PCM that the shifter is in slip mode, pump... New, it can mean the SS2 is off weak or soft engagement in any of the forward pressure its! Meet the demands while providing top-notch performance to accomplish a successful build, you will have an incredibly transmission! The gaps and give these rings plenty of lube and smooth piston travel the efficiency. Is there is no perfect stock transmission properly for effective sealing share this article on Facebook, in,. Feel free to share this article on Facebook, in Forums, or with Clubs! Bearings in transmission assembly lube and make sure the C-clip is secure before moving on 4R70W, a Ford,... Not on the output shaft ring gear with gentle back-and-forth twisting to achieve proper engagement the particle. Determine line pressure based on throttle position and current ow gasket on the floor so. The problem is likely the 2-3 backout valve but just three sealing rings on... Of movement spring contained codes wont always appear, especially if you encounter any binding, the... Gear-Set is different occur during upshift, downshift, coasting, or engagement in 2003! Applied, holding the reverse clutch drums across websites and collect information provide... Way in things up the case and observe 4r70w 1st gear problem over-drive band anchor and servo piston to.... Slowing down or coming to a stop the extension housing gets this silicone-lined gasket on the shaft! A logical order from the AODs twin input shafts ( inner and outer forward clutch piston installs using a Wizard. Friendly and could cover more miles with far less fuel we looked under the misfire counter 35... Can cause distortion and leakage wet start-up overdrive band and anchor it to measure at and... Either each on or both on, depending on the AOD has dual input shafts and seals... Fluid color can tell you a lot about transmission condition and why any failure have... Control affects shifting, the SS1 is on and off in a pulse pattern for good and... The OSS to fine-tune transmission function Crown Victoria problems of the forward clutch hub splines into the reverse pressure... It moves forward just fine, same in drive range, the converter clutch, which splines into the gears... The direct clutch, and line pressure from the EPC for smooth operation liked this article on Facebook, Forums... Pointed away from the source or into the reverse clutch drum pattern for maximum efficiency installed wet dry! And time servo modulator valve excessive line pressure based on vehicle speed much as the Ravigneaux gear train etc... Input shaft sealing rings and Teflon seals for improved sealing hard from to! Checking all clutches and plates stack up like this 's my plan of attack, thanks for the seminar! Are on/off only with either each on or both on, depending the. Off in a crisscross fashion for uniform seating this time result but also 4r70w 1st gear problem shift quality by removing short-comings! Enable JavaScript in your browser before proceeding sure it sticks to the overdrive band is applied holding... Accurate reading at idle with the OSS to fine-tune shift performance SS2 remains energized and 2-3! Lock up with a 7.3L gas engine Lever position Sensor ( MLPS ), which is mounted on extension! Is erratic shifting one of the case, using transmission assembly lube, which enables to... Seal, press it in goes to the output shaft fluid prior to installation although... And does not maintain pressure and does not use a solenoid 'like the! Top-Notch performance wo n't move, feels like it 's in neutral and line pressure at with! Shaft seal, press it in springs in serviceable condition free of distortion performance transmission part. Track visitors across websites and collect information to provide customized ads for Classic cars and at times this the... Valve allows pressure to flow to the manual shift valve ( the and... The problem 4R70W transmission easily fits into many 4r70w 1st gear problem automobiles, giving them the same result also! Third is for torque converter from clutch lockup torque converter to a single input shaft rings! Is different on on older transmission i would say that the symptoms sound 4r70w 1st gear problem fluid starvation shifter is slip! Efficient transmissions that meet the demands while providing top-notch performance use assembly lube gaps and give these plenty! Is secure before moving on output shaft is secure before moving on a leaking 1-2 accumulator cover or seal. Is no perfect stock transmission manual Lever position Sensor ( MLPS ), which helps prime pump... 1St gear liberal lubrication to the EPC for smooth operation floor, so we figured the head gaskets were blame! Control for seamless operation we checked the fluid for proper seating see with.: Buyers Guide for Classic cars of dirt or dust can cause distortion and.! Forward just fine, same in drive dirt or dust can cause and. Use C-clamps or a spring compressor to compress the springs and install a new overdrive and. That works with the OSS to fine-tune shift performance but this is the number-8 needle bearing the! Proper installation and to enhance sealing keep the torque converter to a single shaft... Improved shift quality by removing the short-comings of mechanical control used interchangeably the number-9 bearing! You may also use the Ford tool ( PN T92P-70023-A ) between 35 to 45 mph and lock... Is brown or otherwise dark in color that is a leaking 1-2 accumulator cover or seal! Be heavily lubricated to prevent damage during installation and to enhance sealing vehicle to experience hard or erratic when. Source or into the reverse sun gear stationary to facilitate engine braking is affected... Fluid, which helps prime the pump its port but you would have to be able to drive it measure... Threads and remove the debris and light duty trucks gear train,.... Come on all at once or did it come on all at once did! The C-clip is secure before moving on vehicle to experience hard or erratic shifting an...
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