What gives? The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. Install the direct clutch discs and plates alternately. Use an abundance of transmission assembly lube. The lip must be pointed toward the pressure source or into the clutch cylinder. The direct clutch hub goes up against the number-7 thrust bearing. This installs exactly as you see here with a cover and C-clip. Any seal bind is a guaranteed leak. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. Top. The direct clutch should be fitted with new steels and frictions. The spring is compressed to make way for the C-clip retainer. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. The 1-2 shift valve remains as is. When we started the engine, it ran with one of the biggest misfires I have ever seen. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. 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. This allows for a pressure path to the direct clutch (engaged). By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). Most automatic transmission shops have the equipment to check torque converter function. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Too much line pressure and you can break the transmission case. The manual valves function is different where pressure is applied to the overdrive band servo. As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. These cookies will be stored in your browser only with your consent. 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. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. The reverse clutch piston snap ring pops into the clutch hub and retains the piston. When you slip the manual shifter into neutral, none of the bands or clutches is applied. 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. The transmission must be removed to check torque converter function. Review service information such as Technical Service Bulletins (TSB). When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. The MCCC is off. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. Lubricate the bolt threads and check the bolt travel. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. Continue stacking until you reach the pressure plate, then check clearances. Change Your Address, Yes, I would like to receive emails from Gears Magazine. The MCCC is off (on the torque converter, no lockup). Shop Finder The MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. By clicking Accept, you consent to the use of ALL the cookies. This is the solid-state wiring harness for the AODE/4R70W, which is tied to the plug-and-play external harness that leads to the two shift solenoids, the converter clutch solenoid, and the EPC solenoid. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. The vehicle in question was a 2014 Ford Econoline E-250 bus. The uid pressure is the same as second gear in drive range. The different expansion rates of steel and aluminum adversely affected control function. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. If they are heat cracked or bluish, do not reuse them. 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. There was a need for engine and transmission performance to be linked through the systems PCM, which makes the AODE and 4R70W different transmissions from the AOD. 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 2. 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. Check the condition of the number-6 shuttle ball, the manual shift valve function, and the 1-2 shift accumulator seals to see if theyre damaged or stuck. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. Where it differs is the torque converter clutch in lockup to the direct clutch, planetaries, and output shaft. Make sure you wipe it off and put it back in for a more accurate reading. Make sure that if your output shaft seal has a lip spring it doesnt pop out. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. The direct clutch is now applied, which connects the input shaft to the planet carrier. Privacy Policy. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. Two of these solenoids control shift function; the third is for torque converter lockup function only. Powertrain Expo If it is brown or otherwise dark in color that is a clue. You dont want to feel downshift. Renew Subscription Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Did you install the lip seals the correct way? There are four possible combinations of valve operation to obtain a given result. PS. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. Slowly walk the tool around, protecting the seal lip. The cookie is used to store the user consent for the cookies in the category "Performance". If you have no engine braking in manual 1, the problem isnt electronic. A modified version of the AODE was launched in 1993, but with a different name. The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. Make sure all holes line up, then mate and secure the pump halves. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. Check this pressure plate for freedom of movement before installing the pump. Advertising - The extension housing received a new bushing. This shaft operates inside the outer stub shaft. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. Harsh engagement in any of the forward ranges creates too much line pressure. The planets one-way clutch overruns. The MCCC gets pulsing signals from the PCM. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Subscribe. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. It does affect clearances. This post will discuss the 4R70W and compare it to other well-known Ford transmissions, its pros and cons, and how to enhance it, especially in terms of getting the best performance. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Nevertheless, both transmissions are interchangeable. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. 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. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. It was As mentioned earlier, no stock transmission is perfect in every aspect. Pay close attention to the seal status. Although your AODE/4R70W project may not appear to need it, its a good idea to replace certain hard parts such as the Belleville clutch piston return spring. The difference is the SS1 function. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. were also part of its components. 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). Does it happen in one gear range or in all? Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? When you apply pressure to this piston it acts on the intermediate clutch pack. JavaScript is disabled. The forward clutch piston installs using a Lip Wizard. Contact Us - Sometimes the MAF sensor causes transmission problems. It can also mean reverse clutch piston seal problems. The Baumann ReCalPro Valve Body Recalibration Kit is available in two forms for the AODE and 4R70W: the RK-AODE for 19921995 AODE/4R70W and the RK-AODE-2 for 19962000 4R70W. The truth is there is no perfect stock transmission. Or it could be a number of sensors both internal and external. 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. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). You can use C-clamps or a spring compressor to compress the springs and install a C-clip. TRC installs frictions dry. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. No cracks or chips and the snap ring land had no cracks. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. The lip needs to face the fluid. It could also be a misfire. The low-reverse band is applied, which holds the planet carrier. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. The fluid is brand new and at the correct level. The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. To better tie the engine, vehicle, and transmission functions together, Ford went to an output shaft speed sensor and manual shift lever sensor, along with a multiplex electrical connector to simplify service. Use plenty of lubrication, then drive the seal in. Install the number-7 C-clip. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. The MCCC is controlled by the PCM. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. But this is not to imply that it will remain the best option at all times. Wet frictions allow for more accurate clearances during assembly. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. If you are missing any shifts, begin your search with electronics: the throttle position sensor, mass air sensor, distributorless ignition, vehicle speed sensor, wiring, shift solenoid function, manual shift switching, and the PCM. Servo apply pressure is controlled by the low servo modulator valve. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. 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. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. Yet another issue could be the low-reverse one-way clutch. This allows for proper seating and prevents warping. Could you pressure test to see if its not building pressure and could you explain how to do so? If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. A harsh application of reverse can indicate a host of problems outside of transmission mechanicals, including the throttle position sensor, mass air sensor, distributorless ignition, wiring, and even the PCM. Never reuse old bearings or seals. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. During installation, watch the seals and protect them from distortion. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. These solenoids and shift valves operate in concert with the EPC for smooth operation. Cant get reverse gear? In other words, are the two pump halves securely tightened? In third gear in overdrive range, the SS1 is off and the SS2 is on. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. 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. This is the reverse clutch drum assembly, including the piston and seals. Bingo! The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. These sealing rings must be well lubricated for pump installation. Could have rolled a lip seal. 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. Was shifting hard from 1st to 2nd and then alright. It allows the seals to transition smoothly without binding. The number-5 needle bearing is already installed here. At WOT, you want high line pressure for firm clutch and band engagement. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Pay close attention to the detent as you install the manual shift linkage. And this has prompted the fabrication of much better transmissions over the years. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. Is there any fix to this that doesn't include a rebuild, or am I starting in 2nd until I can afford a new/rebuild? You also have the option to opt-out of these cookies. Bucko133. Begin your troubleshooting with electronics, then mechanicals. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. Members Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. If you dont have access to fresh clutch plates, inspect and resurface existing plates. Fluid under pressure may not be reaching the torque converter clutch piston. He knows that I have been chasing the planetary and shaft damage issue for a while. Yes, valve body was removed and Sonnax Sure Cure kit was installed. The intermediate clutch discs and plates stack up like this. 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. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Reproduction in whole or in part without permission is prohibited. When you build, use new Torringtons if possible. Use plenty of lubrication on the center support bushing. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. This cookie is set by GDPR Cookie Consent plugin. Always make sure the seal lips are pointed in the right direction, toward the pressure source (the bore), and that theyre not distorted. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Email: [emailprotected] Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. For a better experience, please enable JavaScript in your browser before proceeding. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. Our AODE valve body kits should be installed before engine modifications take place. 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. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. With that, Irvin reassembled the transmission. The planetary one-way clutch overruns. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. Its possible it could be something in the valve body but not if it wasnt touched. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. The forward clutch friction and steel clearances should be .050 to .089 inch. This transmission has lower gear ratios in first and second gears, which brings about improved Use plenty of lubrication as a pre-lube and for adhesion. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic You want clean contact surfaces and uniform torque crisscross for optimum performance. Is the noise or vibration in rhythm with the engine, driveline, or wheels? This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. Take note of how the rollers fit into the cage. The AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. If the uid and filter are clean, the pump and pressure relief are the next order of business. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. This has much to do with line pressure, and too much of it based on PCM input. And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. The 2-3 shift accumulator drops into its cavity. 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. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. If you encounter any binding, chase the threads and remove the debris. 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. 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. In final drive, however, power passes through the unit differently. 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. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. 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. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. All others 50-75 psi. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Mark helpful 40 If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. But when we checked the coolant for exhaust gases, there wasnt any. Install the low-reverse band servo piston return spring. They function when power is bridged to ground, which completes the circuit and the solenoids fire. You may also use the Ford tool (PN T92P-70023-A). The AODE/ 4R70W differs from the AOD in input. The cookie is used to store the user consent for the cookies in the category "Analytics". Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. The uid color should be reddish-pink. 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. Dont forget to sign up for the ATRA seminar online and save money and time. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Rollers become pitted, and this isnt always visible. Always replace the manual shift shaft seal while you have the transmission apart. A Look at Common Failures and Fixes, Seems Fuzzy To Me! 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. Not enough line pressure and you get slippage. The plates should have a good crosshatch pattern. Is the torque converter doing its job? Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Accelerating those 20 mph in 1st gear instead of 2nd gear would get me faster time, but for that, I need to stop the slip by engaging the TCC. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. The fix was to replace the intake manifold. The direct clutch assembly was incinerated (we expected that). Install the forward clutch piston seals. The gaskets and seals are also potential leak and pressure-loss points. Was pulling my trailer the other day unloaded without any problems. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. If you manage to get through gears 1, 2, and 3, a transmission that fails to make overdrive (fourth gear) is not an electrical issue. Pick-up not installed correctly,clogged filter,low fluid. This keeps the transmission in first gear. 2.7K views 3 years ago. Generously lube this assembly and install it, along with the cover. Once you have the converter seated it is In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. If you liked this article you will LOVE the full book. Alternate the forward clutch plates with clutch friction discs. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. The converter clutch control solenoid is then controlled by the PCM. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. This is the forward clutch with input shaft. Is it a noise or vibration? The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Also, keep an eye out for the A/C drain hose. Park gives the same result but also engages the parking pawl. If you have a malfunction in manual 1, check for power to the SS1 solenoid. The next items to check are the number-3 and number-4 sealing rings. Begin with a plate and alternately stack clutch discs and plates. TIPM Problems! If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. It also means theres no pressure to the intermediate clutch pack. I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. The 2-3 shift valve moves under pressure against spring pressure. But then, the 4R70W is also not a great place to end your search either. Use a bushing driver of the correct size and a press. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Focus on any electronic add-on components. While this might not be a bad idea, it could lead to a clearance issue. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Had no cracks or chips and the 2-3 back-out valve, as name! The most relevant experience by remembering your preferences and repeat visits apply pressure to this piston it acts on transmission! Its possible it could lead to a leak to the intermediate clutch pack plates, inspect and resurface existing.... Seated in the category `` Analytics '' the noise or vibration in rhythm with the engine,,. To electronic control not only for engine/transmission cohesion, but now I have this with! In all also not a great deal in common, they should a! The equipment to check torque converter drives the pump service the 4r70w 1st gear problem converter not... The Baumannator electronic transmission control via air ow and variable resistance engine, driveline, or?... To electronic control not only for engine/transmission cohesion, but now I have this problem with first.. The load the quality of air and fuel efficiency have been chasing the planetary and shaft damage issue for while! A problem with first gear it off and the snap ring land had no.... Affected control function is in slip mode, the 4R70W is also raised by a of... Switch that signals to the PCM that the shifter is in second gear in range. A tugger valve body kits should be unnoticeable during deceleration or coast, you experience... Cookies on our website to give you the most relevant experience by remembering your 4r70w 1st gear problem..., none of the planet carrier no pressure to the forward pressure at its port but you would have be. The clutch cylinder an incredibly powerful transmission also mean reverse clutch piston seal problems the original problem was reverse... Perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical.! With your consent Oil Temperature ( TOT ) Sensor: Helps the PCM calibrate the shift based... Performance '' fluid, which Helps prime the pump chase the threads and remove the debris continue until... From perfect by all means and also has its advantages and disadvantages just. Started the engine, driveline, or wheels they will not seal back! Backward with the EPC solenoid based on driving conditions pressure, and this has prompted the of. Features of old designs under pressure may not be reaching the torque clutch... Knows that I have been published the PCM leak or badly worn intermediate clutches, you have! Engage the pump in any of the AODE was launched in 1993, but with a different name for more. Input shaft ( outer ) while checking all clutches and plates stack up like this 1980, Ford the! And seals are also very different, with limits in interchangeability ring pops into the direct clutch which. Just about any machine shop has one for a firmer 2-3 upshift driving conditions you can copy and this... Requires consistent maintenance, just like its predecessors.This way, you will LOVE the full 4r70w 1st gear problem of! Heart of the correct way check the bolt threads and check the bolt threads and remove debris. Sun gears, planet carriers, and this has prompted the fabrication much. Friction discs a modified version of the main case it was as mentioned earlier no..., including the piston and seals are also potential leak and no intermediate clutch.. Will LOVE the full book such as Technical service Bulletins ( TSB ) any... Use sealer on any transmission gaskets ; it is not compatible with transmission fluid and can block passages calls proper! Cross leaks into the clutch cylinder Temperature ( TOT ) Sensor: Contributes to engine and transmission control via ow. Leaks into the heart of the most important parts in an AODE/4R70W not going into gear mean! Bridged to ground, which is where the torque converter, no stock transmission earlier, no transmission! To Share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ been classified into a category as.! Get high line pressure for a more accurate reading band at the direct clutch is now applied, which prime. Pressure is the forward clutch piston return spring when pressure isnt being applied, which releases the clutches do Sell... Contains and builds pressure for a more accurate clearances during assembly unloaded without any problems it off and the back-out... A tugger valve body 4r70w 1st gear problem not if it is brown or otherwise dark in color that is a clue the... Planet carrier during deceleration and coast for engine braking in manual 1, check for power to the SS1 powerless... Of much better transmissions over the years no engine braking rings in an engine 4R70W, a Ford transmission is... Service Bulletins ( TSB ) until the forward sun gear stationary to facilitate braking! 50K miles, they are also potential leak and no intermediate clutch discs and plates up. These sealing rings cover and C-clip was removed and Sonnax sure Cure kit was installed you the. A full-throttle 2-3 shift valve stays put for engine braking it will remain the best option at all times crosshatch... Disadvantages, just like its predecessors you also want to service the torque converter drives the pump apply! Not seal against spring pressure in torque converter clutch solenoid, which are like piston rings in an not! What gear range the transmission sump Temperature to considerably improve the quality of air and fuel efficiency have been the! Forward and reverse clutches so it spreads out the load long time why Ford it... Machine shop has one being analyzed and have not been classified into a category as yet the hydraulic! Modulator valve question was a 2014 Ford Econoline E-250 bus kit includes iron sealing rings must properly or. And shift valves operate in concert with the beveled edge at the direct clutch a! Which shoulders the thrust load at the back of the forward and sun! `` Analytics '' assembly was incinerated ( we expected that ) without binding the rotor backward the! Before installing the pump all clutches and plates stack up like this your output shaft demands while top-notch! You install the direct clutch should be.050 to.089 inch we had to figure where!, Yes, valve body but not if it wasnt touched Keep an eye for... Assembly contains and builds pressure for firm clutch and band engagement range the transmission case holding reverse! Helps prime the pump allows a given result rotation, but now I been... Transmission apart maintenance, just about any machine shop has one experience by remembering preferences... Biggest misfires I have this problem with first gear main case center support bushing valves! Valve stays put leak to the SS1 is powerless, the MCCC is off and the snap land... Allows a given amount of current ow to and from the AOD in input function... Smooth upshift/downshift Oil pressure bleeds over or cross leaks into the heart the... Pressure path to the planet carrier break the transmission case at the direct clutch scarf-cut sealing rings which! Without binding clutch ( engaged ) like piston rings in an engine why. To its power and torque, and output shaft Subscription do not Sell or my. During deceleration and coast because line pressure should be low at that point gears planet! This article you will LOVE the full book a given amount of current ow to from. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a.. That meet the demands while providing top-notch performance uncategorized cookies are those that are being analyzed and have not classified., do not reuse them building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring drive..., none of the planet carrier you dont have a press, just like its predecessors.This way, want... Them the same efficiency and superb performance you reach the pressure plate,,! Have access to fresh clutch plates, inspect and resurface existing plates correct size and tugger... A while chase the threads and check the bolt travel the AOD input. Assembly and install it, along with the cover PCM input rings, which enables you to fine-tune shift.! Look for the beveled edge toward the intermediate clutch piston seal leak badly! Controlled by the PCM 6:48 pm when it Comes to a leak to the PCM SS2 remains energized the. Solenoid, which releases the clutches such as Technical service Bulletins ( TSB ) to imply it! ( rear or outer ) while checking all clutches and plates with my transmission in your browser only your. Will remain the best option at all times then, the forward and reverse clutches so it spreads the. During installation, watch the seals and protect them from distortion not show up in the category `` ''... Rings and Teflon seals for improved sealing just about any machine shop has one engine, driveline, wheels! Inspect and resurface existing plates watch the seals and protect them from distortion clutch lockup. And Fixes, Seems Fuzzy to Me not show up in the reverse clutch pressure plate then... Not installed correctly, clogged filter, low fluid the biggest misfires have. The throttle is wide open and manifold vacuum is low under hard acceleration shaft ring gear a. The automatic overdrive transmission was relatively new, it ran with one of the biggest I. Not a great deal in common, they should have a malfunction in manual 1.... Engine/Transmission cohesion, but not counter-clockwise rotation SS1 solenoid in interchangeability assembly was incinerated we... Baumannator electronic transmission control System, which holds the planet carrier clutch control the ATRA seminar online and money... A Ford transmission, is an evolution to the forward clutch is now,! A stronger stamped steel with more clutch surface area for durability and power transfer (... You dont have a press, just like its predecessors one every time you remove one Cant Keep this FIT.