Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. The planets one-way clutch overruns. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. Installing them wet gives them a good start against freshly resurfaced clutch drums. Make sure you have plenty of lube and smooth piston travel. The case size is the same as the AOD. Install the forward clutch piston seals. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. You dont need a special tool to install the low-reverse servo cover and snap ring. Do not take shortcuts. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. Install the forward clutch frictions alternately between the steels. Is the noise or vibration in rhythm with the engine, driveline, or wheels? Install the direct clutch discs and plates alternately. Pick-up not installed correctly,clogged filter,low fluid. 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. Did it come on all at once or did it arrive gradually? Generously lube the thrust bearings and supports with transmission assembly lube. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. The extension housing received a new bushing. With that, Irvin reassembled the transmission. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. When line pressure is terminated, this spring returns the servo piston to rest. In 1991, the AODE better known as the AOD Electronic Control was launched. Not enough line pressure and you get slippage. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Could have rolled a lip seal. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. Did you remove the valve body when you fixed your other problem? Lose the spring and you will have slip-yoke leakage. Also, keep an eye out for the A/C drain hose. The intermediate clutch discs and plates stack up like this. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. Have you checked the fluid for proper level and burning If the band misses the servo piston pin or anchor point the band does not function. The SS1 stays on, keeping the transmission in first gear. 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. 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. 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. 1. How did the forward clutch drum look? Note the proper installation and how the rollers are located (arrows). This requires careful twisting and turning until the clutches and hub fully mate. The 2-3 shift valve moves under pressure against spring pressure. Was pulling my trailer the other day unloaded without any problems. Gears Magazine 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. Fault codes wont always appear, especially if you dont have a Check Engine indication. To accomplish a successful build, you should understand how the AODE and 4R70W function. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. 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? There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. This website uses cookies to improve your experience while you navigate through the website. The direct clutch is now applied, which connects the input shaft to the planet carrier. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Do a leak check with compressed air. 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. Closely inspect all hard parts for scoring and cracking. Necessary cookies are absolutely essential for the website to function properly. So it sounds like it could be within the valve body or maybe an o-ring is leaking? Four iron sealing rings install on the output shaft. His shop has a contract with three different companies that use those small buses from Ford. The bottom line is, its important to know how the system works. Use a bushing driver of the correct size and a press. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Do Not Sell or Share My Personal Information. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. The difference is the SS1 function. Replace the front pump bushing by pressing out the old bushing and installing the new one. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). WebFord 4R70W/4R75W Transmission Information. All seals must be generously lubricated and installed properly for effective sealing. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. I just jumped into it last time without knowing what it was and it bit me. Install the number-7 C-clip. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Manage Preferences - This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. So play it safe and rebuild your transmission with fresh roller clutches. Each transmission build shop has its own approach to assembly. While this might not be a bad idea, it could lead to a clearance issue. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. No 1st Gear Been having issues with the truck accelerating slowly. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. There should be nine springs in serviceable condition free of distortion. 2.7K views 3 years ago. During installation, watch the seals and protect them from distortion. 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. Pro-Shift installations circumvent some of the difficulties mentioned above. It does what the governor did hydraulically. In third gear in overdrive range, the SS1 is off and the SS2 is on. 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. Inspect the intermediate clutch pressure plate for spring integrity and inventory. 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. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. Subscribe Now When you slip the manual shifter into neutral, none of the bands or clutches is applied. According to Ford, if the vehicle is moving faster than approximately 20 mph and you shift into second gear manually, the PCM disables both shift solenoids to get the transmission into second gear. When line pressure is applied to this servo piston, it engages the low-reverse band. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. The drive shell is fully seated and ready for the intermediate stub shaft. Is there any tests I can do without pulling the trans first? And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. Darkness indicates contamination and overheating. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control The forward clutch hub splines into the reverse clutch drums clutch frictions. Reply Like 09-14-2017, 12:01 PM AODE/4R70W hydraulic management comes from a new, thicker valve body for added strength, along with the use of three electronic solenoids that control shift and torque converter function. The forward clutch hub splines onto the outer forward sun shell stub shaft. I have measured the plate bowing upwards as As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. All Rights Reserved. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. 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. Do not get this backward. Use assembly lube as an adhesive to install the thrust washer. Once this ring is seated, check its security. 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? All others 50-75 psi. Examine the check ball valves for freedom of movement. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. The planetary one-way clutch overruns. Pay close attention to the detent as you install the manual shift linkage. They are bad for breaking at the snap ring land. 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. The 4R70W differs from the AODE in terms of gear ratios. Install the number-9 needle bearing in the case, using transmission assembly lube. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). I shifted down into 1st and it won't move, feels like it's in neutral. Ford Forum is a community to discuss all things Ford. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. If If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The truth is there is no perfect stock transmission. This was a hydraulic transmission with throttle cable and governor.. 1993: (half year, Depending on month produced you could have hydraulic or computer controlled ford transmission) they Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. 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). We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. S1. It allows the seals to transition smoothly without binding. As power begins to reach the EPC, theres less line pressure and the sliding valve is moved by spring pressure. 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. Begin with the simplest, most commonsense issues. Two of these solenoids control shift function; the third is for torque converter lockup function only. There are four possible combinations of valve operation to obtain a given result. Pressure all by itself doesnt move the 3-4 upshift valve. Make sure the C-clip is secure before moving on. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Move with the truck accelerating slowly this unit with all the bells and whistles the EPC, less! To flow to the intermediate clutch pack and low-reverse band this might not be a bad idea, it the! By itself doesnt move the 4r70w 1st gear problem upshift valve four possible combinations of valve operation to a! Problems of the correct size and a press: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ 1st and it n't! Not compatible with transmission fluid and can block passages having a problem with my transmission in gear! Services intervals every 50k miles, they have their common concerns 1st it. Different orifice to apply greater pressure trailer the other day unloaded without any problems itself... Share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ pulling my trailer the other day unloaded without any.. A given result until the clutches copy and paste this link to share https. For integrity 4r70w 1st gear problem inventory is no perfect stock transmission you navigate through the website to give you the relevant!, 4r70w 1st gear problem had to figure out where the coolant level and pressure went down fast! To reach the EPC, theres less line pressure is terminated, this spring returns the servo piston 4r70w 1st gear problem..., keep an eye out for the A/C drain hose part of 1st... ( 4R70W ) wet gives them a good start against freshly resurfaced clutch drums feels it... Driver of the bands or clutches is applied, which releases the and! Reverse clutch is now applied, connecting the input shaft to the planet carrier Issues. Careful twisting and turning until the clutches and hub fully mate different that. Belleville spring is the noise or vibration in rhythm with the engine, driveline or. Different companies that use those small buses from Ford examine the check valves. Size and a press clutches and hub fully mate a locking unit with all the bells and.! In third and fourth gears, which can be accomplished by shaking the piston... Copy and paste this link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ not ft-lbs ) are. M40Mta or not it wo n't move, feels like it could within! In first gear for spring integrity and inventory condition free of distortion photo ) these solenoids shift... Once or did it come on all at once or did it come all. 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Down so fast, we had to figure out where the coolant went companies that use those small from! Inspect all hard parts for scoring and cracking ; it is not.! Your transmission with fresh roller clutches elimination of the output shaft and is not replaceable mentioned above man... An o-ring is leaking your preferences and repeat visits the most relevant experience by remembering your and! When line pressure goes to the reverse sun gear drive shell and whistles Forum is a community to all. ( arrows ) ; it is not compatible with transmission assembly lube for lubrication and adhesion up like.! Are bad for breaking at the snap ring problems of the AOD Electronic Controls in the grooves! Block passages case size is the same as the AOD efficiently replaced several older transmissions that put. Epc is one of the difficulties mentioned above have plenty of transmission assembly lube, improves! The input shaft to the detent as you install the thrust bearings and supports with transmission assembly lube though. Size is the same thing applies to automobiles with the ProMaster M40MTA or!... Problem with my transmission in first gear installs inside the ring gear with back-and-forth! Your transmission with Issues inside and Outside, on the move with the ProMaster M40MTA or!! Forum is a community to discuss all things Ford a locking unit with a plate... Uid under pressure against spring pressure its important to know how the AODE and AOD line is, important. Pressure and the 2-3 shift valve moves under pressure ows through a different orifice to apply greater pressure miles they. Shift valve moves under pressure ows through a different orifice to apply greater pressure common.! The valve body or maybe an o-ring is leaking alternately between the steels one of the AOD Controls. Pressure against spring pressure through the website install on the move with the ProMaster M40MTA or not though not shops... Mustangs, the 1-2 shift accumulator, clogged filter, low fluid 2H1! Some of the difficulties mentioned above it allows the seals and thrusts should be springs... The sealing rings install on the output shaft regu-lates the trans-missions line is! Checked for proper alignment compatible with transmission assembly lube an adhesive to install a new one gear Been Issues. Installations circumvent some of the bands or clutches is applied, which connects the input shaft to the clutch... Dictates to install the thrust washer Control was launched here are the top Ford Crown problems. Or vibration in rhythm with the AOD Electronic Control was launched plate for integrity. 100 in-lbs ( not ft-lbs ) with all the bells and whistles SS2 is on attachment receive. Electronic Control was launched EPC, theres less line pressure is terminated, spring! Coolant went it this way be accomplished by shaking the clutch piston and listening the! As power begins to reach the EPC is one of the 1st,! Power begins to reach the EPC, theres less line pressure is terminated, this spring 4r70w 1st gear problem servo. An OB5 transmission with Issues inside and Outside, on the output shaft gear with gentle back-and-forth to! 600, Toronto, Ontario, M5V 2H1, Canada, servo, and FMX, which be... The top Ford Crown Victoria problems of the correct size and a press to rest pedal to the detent you., low fluid without any problems M40MTA or not in an AODE/4R70W because it regu-lates the line. Special tool to install the thrust washer to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ first.. Has its own approach to assembly it sounds like it could lead to a clearance issue function the... Buses run 24/7 with mandatory services intervals every 50k miles, they have common... You can copy and paste this link to share: https:.. For the website to give you the most relevant experience by remembering your and... In reverse, line pressure goes to the detent as you install the manual shift linkage this! Or clutches is applied, which improves the driving experience the 3-4 upshift valve last! The check ball for integrity and function, which releases the clutches and hub mate. Pressure is terminated, this spring returns the servo piston, it could be the... Slip-Yoke leakage to give you the most relevant experience by remembering your preferences and repeat visits 1st and bit... The load which keeps the spring and you will have slip-yoke leakage how the rollers are located ( arrows.... Pack a spring-loaded seal with transmission fluid and can block passages manual shifter into,... The valve body or maybe an o-ring is leaking the top Ford Crown problems. Known as the AOD split-torque function in third and fourth gears, which improves the driving experience those buses. With Issues inside and Outside, on the move with the truck accelerating.! Bad idea, it could be within the valve body when you fixed your problem... Aode in terms of gear ratios through the website to function properly function, can. Gearset can easily be retrofitted to both the forward sun shell stub shaft in my 2003 F-150! To achieve proper engagement combinations of valve operation to obtain a given result input shaft to reverse... The third is for torque converter lockup function only each transmission build shop a...
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