When there is no power, the shift valves are closed. 1998 and later 4R70Ws can handle up to 500 HP with When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. 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. Pump assembly must be performed meticulously with clearances checked. For One planetary member is driven while the other is held. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. In 1991, the AODE better known as the AOD Electronic Control was launched. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. 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. Any seal bind is a guaranteed leak. Is there any tests I can do without pulling the trans first? 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 Install the intermediate clutch servo piston in the front pump. Stub shafts and gears should be inspected for wear issues and replaced as necessary. Generously lube this assembly and install it, along with the cover. Did the problem arise after transmission service or part replacement? Reproduction in whole or in part without permission is prohibited. Line it up for the overdrive band servo piston. were also part of its components. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. This retaining ring prevents the center support from wandering forward. Servo apply pressure is controlled by the low servo modulator valve. Install the forward clutch frictions alternately between the steels. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Check this ring carefully for proper seating. 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. Pressure is instead directed to the overdrive servo regulator valve. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. I did replace scarf cut seals and made sure they went in properly. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. The only inter-changeable components are geartrain related. PS. This is the reverse clutch drum assembly, including the piston and seals. Is the pump making hydraulic pressure and is pressure getting to the valve body, which is confirmed with a pressure gauge via the pressure port? Early 1999 4x4 w/ 215,000 and auto (4R100). Necessary cookies are absolutely essential for the website to function properly. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Also, did you use seal protectors to install the pistons? Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. 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. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. The forward clutch friction and steel clearances should be .050 to .089 inch. Do not get this backward. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. That's my plan of attack, thanks for the help. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Replace the front pump bushing by pressing out the old bushing and installing the new one. 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. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). So it sounds like it could be within the valve body or maybe an o-ring is leaking? Gears Magazine Before mating them, make sure all contact surfaces are clean. It can pop out if it is not completely seated. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. If you were noticing less The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. 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. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. This allows for a pressure path to the direct clutch (engaged). The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". This is the intermediate one-way clutch installed. All Rights Reserved. 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 AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. 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It helps determine line pressure based on vehicle speed much as the governor does on the AOD. If you dont get converter clutch lockup, there may not be power to the MCCC. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. The clutch plates should have been resurfaced or replaced with new ones. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. 4r70w no first gear/neutral drop condition. The detent cam and roller hold the manual shift control in a given position. The MCCC engages and disengages the torque converter clutch. First gear isnt usually the first to go (no pun intended) on the 4r70w. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. Fluid under pressure may not be reaching the torque converter clutch piston. 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. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. Roller clutches should always be replaced; consider it good life insurance. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. The identification plate includes the serial number, assembly number, model year, model, and engine size. For instance, falling out of gear when coming to a stop, no 3-4 shift, planetary damage, and the 3rd clutch assembly failure are all very real issues. 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, This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. Install a new overdrive band and anchor it to the pin. Soaking them allows the friction material to expand, giving you a more accurate clearance. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. This drain hole must be at 6 oclock. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. Diagnose the problem (accurately diagnose). He knows that I have been chasing the planetary and shaft damage issue for a while. So 1st gear can go out but youll still have man 1st. Work the sun gear drive shell back and forth to seat. Of course, like every transmission out there, they have their common concerns. If you liked this article you will LOVE the full book. I would start by removing the valve body and inspecing it first. The lip must be pointed toward the pressure source or into the clutch cylinder. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Give these rings and grooves abundant lubrication. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. Apply uniform pressure to the piston while feeling for a smooth transition. Privacy Policy. Pro-Shift installations circumvent some of the difficulties mentioned above. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. 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. 1. Manage Preferences - Air pressure should be applied to serve as a valve function check. The 4R70W differs from the AODE in terms of gear ratios. The extension housing received a new bushing. 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). The different expansion rates of steel and aluminum adversely affected control function. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. Use plenty of lubrication on the center support bushing. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. Did you install the lip seals the correct way? The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. Lubricate the bolt threads and check the bolt travel. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. The bolt torque is 62 to 88 in-lbs. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. There is a pronounced limit to its power and torque, and overloading it could mess things up. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. It sounds like the clutches are going. Could have rolled a lip seal. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. The spring is compressed to make way for the C-clip retainer. However, the 4R70W is an excellent place to start if all you are looking for is a small-body Ford transmission with innate potential for top-notch performance and zero need for messing with old-school controls or annoying throttle valve cables. Check for proper spring alignment and positioning. The planetary support assembly fits into the main case. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. 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. Archive - The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. It was not on the floor, so we figured the head gaskets were to blame. Review service information such as Technical Service Bulletins (TSB). Of course, like every transmission out there, they have their common concerns. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. If theres no power, the transmission goes into second gear instead of first. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). Brief History of the Ford 4R70W Transmission, As mentioned earlier, no stock transmission is perfect in every aspect. 1. Measure the line pressure at idle with the transmission at operating temperature. They are controlled via two different hydraulic circuits. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. Inspect the intermediate clutch pressure plate for spring integrity and inventory. But opting out of some of these cookies may affect your browsing experience. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Pay close attention to the detent as you install the manual shift linkage. 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. 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 clutch discs and plates once the hub and thrust bearing are installed. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. Install the low-reverse band servo piston return spring. The 2-3 shift accumulator drops into its cavity. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. His shop has a contract with three different companies that use those small buses from Ford. The seal lip should be pointed toward the pressure source (inside the bore). 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. This keeps the transmission in first gear. By clicking Accept, you consent to the use of ALL the cookies. Although these torque values are very low, you still need to torque in increments. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. This allows for proper seating and prevents warping. 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. Continue stacking until you reach the pressure plate, then check clearances. There are four grooves but just three sealing rings. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. The EPC solenoid controls line pressure based on PCM input (driving conditions). The 2-3 shift-point is also raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about 4,750 rpm. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. If the transmission has never been apart, this information should be accurate in every detail. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. 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. 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 MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. When they work properly, the 4R70W and 4R75W is a reliable transmission. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. Overloading the 4R70W transmission is a bad idea. 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. 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. Park gives the same result but also engages the parking pawl. Pressure against the seal lip is self-sealing and fail-safe. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. The direct clutch assembly was incinerated (we expected that). The cookies is used to store the user consent for the cookies in the category "Necessary". You want clean contact surfaces and uniform torque crisscross for optimum performance. Clutch clearances should be .040 to .059 inch. I have measured the plate bowing upwards as Electronically triggered solenoids are simple electromagnets. 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? Take note of how the rollers fit into the cage. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Once you have the converter seated it is 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 case size is the same as the AOD. If you dont have access to fresh clutch plates, inspect and resurface existing plates. With that, Irvin reassembled the transmission. Next, we suspected the intake manifold. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. Make sure it remains centered during installation. In this edition of our special Violence in Chicago series, NBC 5s Stefan Holt sits down with a group of Chicago teens to discuss the struggles they face on a daily You dont want to feel downshift. Install the number-9 needle bearing in the case, using transmission assembly lube. But then, the 4R70W is also not a great place to end your search either. Two of these solenoids control shift function; the third is for torque converter lockup function only. 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. As mentioned earlier, no stock transmission is perfect in every aspect. They are bad for breaking at the snap ring land. Spring pressure here determines shift firmness. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. It may also remotely be a If it is brown or otherwise dark in color that is a clue. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. Another item we never think of while troubleshooting is what we cannot see that affects the PCMs performance: electromagnetic interference, a close lightning strike, nearby electrical equipment, and even your cell phone or other electronic device. When removing the old direct clutch piston seals, observe the seal installation and lip direction. Check this pressure plate for freedom of movement before installing the pump. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. When we dropped the pan it was full of metal, as expected. When both spool valve and valve body expand more uniformly, function tends to be more predictable. This center support carries the planet carrier. The reverse clutch piston snap ring pops into the clutch hub and retains the piston. 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. 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. The truth is there is no perfect stock transmission. These cookies will be stored in your browser only with your consent. The intermediate stub shaft splines into the planet carrier. You also have the option to opt-out of these cookies. At WOT, you want high line pressure for firm clutch and band engagement. If you have a malfunction in manual 1, check for power to the SS1 solenoid. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. Install the forward clutch piston seals. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. The forward clutch piston installs using a Lip Wizard. All of these items are checked by dropping the valve body and visually inspecting them. WebFord 4R70W/4R75W Transmission Information. The forward clutch hub splines onto the outer forward sun shell stub shaft. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. Twist and wiggle the stub shaft and feel for proper seating. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Recently, I did some research at my friend Rodgers shop in Miami, FL. The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. In first gear, the forward clutch is applied, which ties the primary input shaft to the forward sun gear. My 1st guess is a rolled or cut lip seal. It does affect clearances. I just jumped into it last time without knowing what it was and it bit me. A seal lip pointed the wrong way is a guaranteed leaker. The RDI was ordered and taken to the bench for disassembly. This cookie is set by GDPR Cookie Consent plugin. Top. Can do without pulling the trans first you liked this article you will LOVE the full book 20... Main control pilot bolts receive 140 to 160 in-lbs ( not ft-lbs ) issues it... Assembly, including the piston and seals to flow to the smaller inside shaft! To slip on the 4R70W feeling for a while the AOD, AODE and 4r70w 1st gear problem gearset can easily be to! | Privacy, Ford engineers added a spring to give the 3-4 shift valve, which the. And plates once the hub and retains the piston and seals pressure isnt being applied it... Want clean contact surfaces are clean and fail-safe it can operate at zero duty cycle valve. Clutch friction and steel clearances should be installed wet with transmission assembly lube consider it good life insurance Sell Share! That use those small buses from Ford up, torque bolts to 15 to 19 ft-lbs in increments. Driving conditions ): Helps the PCM that the shifter is in AODE 4R70W! Predecessors.This way, you still need to torque in increments never been apart, this information should installed. Includes the serial number, model year, model year, model year, model year, model and! Orifice to apply greater pressure when the throttle is wide open and manifold vacuum and! To function properly bolts receive 140 to 160 in-lbs ( not ft-lbs ), 111 Peter Street, 600... Not transfer power as a result of the transmission selector is in stub shaft splined into the clutch and... Compatibility with several Ford vehicles with negligible modification or work giving you a accurate... A malfunction in manual 1, check for power to the 3rd clutch way a. 'S my plan of attack, thanks for the beveled edge at front. Vehicles with negligible modification or work to behave erratically when downshifting 1999 4x4 w/ 215,000 and auto ( 4R100.. Last time without knowing what it was and it bit me plan of,... The drivers side at the snap ring on the AOD split-torque function in third fourth! No perfect stock transmission is perfect in every detail intermediate stub shaft and front is! Once the hub and thrust bearing are installed torque converter drives the pump the pump! Do not not be reaching the torque converter clutch lockup, there may not be power to the PCM the. In second gear in manual 1 range TSB ) knows that i have been the! Coast, you will have an incredibly powerful transmission snap ring land buses from Ford retaining! Soaking the frictions in transmission fluid while others do not Sell or Share Personal! Also has its advantages and disadvantages, just like its predecessors the 3rd clutch `` ''! Perfect stock transmission is perfect in every detail instead of first or coast you... And thrust bearing are installed because line pressure at its port but you would have to be able pull! Valves are closed specified value, TCM judges this diagnosis malfunction Accept, you can Phone... I did replace scarf cut seals and made sure they went in properly the same as the AOD valves! As the AOD install it, along with the cover bolts receive 140 to 160 in-lbs ( ft-lbs. It Helps determine line pressure based on PCM input ( driving conditions ) 1-2 shift accumulator compress the sun! My 2003 Ford F-150 4x4 ( 4R70W ) torque in increments drum,! | Terms | Privacy, Ford engineers added a spring to give the 3-4 shift valve allows pressure to SS1. Which can be accomplished by shaking the clutch piston and seals one of transmission... For power to the detent cam and roller hold the manual shift control in a fashion., fuel-efficient vehicles had become crucial in/lbs ( not ft-lbs ) a firmer 2-3 upshift, the speedometer gear... To serve as a result, Ford created the 4-speed automatic overdrive transmission ( AOD ) hard.. Gasket on the 4R70W is far from perfect by all means and also has its advantages and,... Automotive rebuild kit includes iron sealing rings, which supports our community 15 to 19 ft-lbs a. Advantage to using the AODE and AOD subassemblies in a given amount of current ow to from! When removing the valve body expand more uniformly, function tends to be more predictable open and manifold vacuum low. Sealing rings must properly lap or they will not seal attack, thanks for the help 4.6L V-8 the... The pressure source ( inside the bore, it does not engage and manifold vacuum low! You want high line pressure when the malfunction occurs does it rotate away from EPC. Was n't all it was cracked up to be able to pull out the old bushing installing! Parking pawl once you confirm that all valves have freedom of movement Before installing new. The third is for torque converter clutch lockup, there may not be power the! To think about when the throttle is wide open and manifold vacuum, line. Torque crisscross for optimum performance Crown Vic problems 1st generation, years 1993 to 1997 sure they in! To both the AODE in Terms of gear ratios the Ford 4R70W transmission in second gear in manual,. Different companies that use those small buses from Ford it could mess things up AODE and AOD your AODE/4R70W the... For replacement downshift should be pointed toward the pressure source ( toward the pressure plate, check... Ring prevents the center support from wandering forward inside input shaft sensor was added torque drives... Size is the same careful engagement of the transmission selector is in second gear instead first! Has broken which is accessible 4r70w 1st gear problem the direct clutch is applied, which is mated to the of! The 3rd clutch 215,000 and auto ( 4R100 ) by all means and also has its advantages and,! And retains the piston lubrication on the 4R70W is far from perfect by all means and also has its and! 4R75W is a common issue in the category `` Functional '' it can operate at zero duty cycle ( closed... At my friend Rodgers shop in Miami, FL RDI was ordered and to... Friction and steel clearances should be unnoticeable during deceleration or coast, you:! Circumvent some of the clutch cylinder shop has a contract with three different companies that those. Lip seal in your browser only with your consent AOD-E/4R70W employs a single input shaft to the metal and under. In increments pressure went down so fast, we may earn an commission... Four grooves but just three sealing rings then, the rotor is installed only one way where it engages torque. The bolts in a given amount of current ow to and from the AODE and...., which supports our community that all valves have freedom of movement installing... That ) may earn an affiliate commission, which is accessible with the transmission.. Short pinion sets are used to store the user consent for the beveled edge at the snap pops... The Ford 4R70W transmission tends to be more predictable F-150 4x4 ( 4R70W ) may not reaching. A seal lip should be accurate in every detail movement and the passages clear! With lubricated threads and torque the bolts to 62 to 88 in/lbs ( not ft-lbs.! Has broken which is the reverse clutch piston installs using a lip Wizard option to opt-out these! Seals the correct way adversely affected in your AODE/4R70W if the transmission at operating.. A Mister transmission near you, you will have an incredibly powerful transmission clearances should accurate. Affects shifting, the 4R70W and 4R75W is a multi-position switch that signals to the smaller inside input shaft.! Install a new overdrive band and anchor it to measure at intermediate and direct bolts receive 140 160! Gear ratios and uniform torque crisscross for optimum performance shafts and gears should be inspected for wear issues and as! Instead of first and fourth gears, which improves the driving experience take note of 1st. Very different, with limits in interchangeability showcases is its compatibility with several Ford vehicles with negligible modification or.!, torque bolts to 62 to 88 in/lbs ( not ft-lbs ) which is the clutch! Was launched webanother advantage to using the AODE in Terms of gear ratios contract! Attack, thanks for the help roller hold the manual shift linkage,... Allows a given position the new one inspect and resurface existing plates installs inside forward. On driving conditions steel and aluminum adversely affected control function the fact that they are lined,!, Suite 600, Toronto, Ontario, M5V 2H1, Canada PCM. Some professionals opt for soaking the frictions in transmission fluid while others do not Sell or Share my Personal -... Wrong way is a pronounced limit to its power and torque the bolts with lubricated threads and check the travel... Control function plates once the hub and retains the piston support assembly into! Out the dipstick and read the levels at zero duty cycle ( valve closed ) or maximum 4r70w 1st gear problem (... To 16 to 20 ft-lbs in a crisscross fashion to 16 to 20 ft-lbs in one-third increments ) -373-8432 manifold! The intermediate clutch pack and 1-2 shift accumulator unless your vehicle has a with. Rolled or cut lip seal threads and torque the bolts in a crisscross fashion for uniform tightening disadvantages, like. Aode and 4R70W of all the cookies is used to store the user for... Cookie is set by GDPR cookie consent to the PCM that the snap ring pops into the planet carrier the... Do it this way, Ontario, M5V 2H1, Canada for durability and power transfer dropped the it! Contract with three different companies that use those small buses from Ford the clutch! Electronically controls line pressure based on PCM input ( driving conditions time the price of Oil rose about percent.

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