SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. The manual valves function is different where pressure is applied to the overdrive band servo. When in drive, first gear slips but when in manual first gear, no slippage. Make sure you wipe it off and put it back in for a more accurate reading. In final drive, however, power passes through the unit differently. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. 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. If theres no power, the transmission goes into second gear instead of first. Pay close attention to the seal status. After you add liberal lubrication to the output shaft seal, press it in. Privacy Policy. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? If it is brown or otherwise dark in color that is a clue. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. Examine the pump stator support ring end gaps and position them at 45-degree increments. There are four grooves but just three sealing rings. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. I did replace scarf cut seals and made sure they went in properly. It was not on the floor, so we figured the head gaskets were to blame. Pressure is instead directed to the overdrive servo regulator valve. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. Shift up to 2nd and it moves forward just fine, same in Drive. The cookies is used to store the user consent for the cookies in the category "Necessary". The planetary one-way clutch overruns. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Focus on any electronic add-on components. The drive shell is fully seated and ready for the intermediate stub shaft. Check this ring carefully for proper seating. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. No cracks or chips and the snap ring land had no cracks. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. were also part of its components. The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). Also, did you use seal protectors to install the pistons? 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. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. The fix was to replace the intake manifold. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Legal/Privacy. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. With that, Irvin reassembled the transmission. The original problem was no reverse, which is fixed, but now I have this problem with first gear. It was They are controlled via two different hydraulic circuits. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. There are no surprises with this system, which follows the engines personality. A Look at Common Failures and Fixes, Seems Fuzzy To Me! The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Use a seal protection tool to install the intermediate clutch piston installation. Also, keep an eye out for the A/C drain hose. What is the engine idle speed? 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. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. 2.7K views 3 years ago. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Do not take shortcuts. Subscribe Now On on older transmission I would say that the symptoms sound like fluid starvation. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. The uid color should be reddish-pink. Use a bushing driver of the correct size and a press. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. If you dont get converter clutch lockup, there may not be power to the MCCC. It sounds like the clutches are going. Fit the front pump, then slowly run the bolts down and pull the pump tight. When it is time to compress clutch return springs during clutch piston installation, opt for the use of C-clamps if you dont have access to a clutch spring compressor. 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. This requires careful twisting and turning until the clutches and hub fully mate. When they work properly, the 4R70W and 4R75W is a reliable transmission. At WOT, you want high line pressure for firm clutch and band engagement. 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. The next items to check are the number-3 and number-4 sealing rings. Use plenty of lubrication on the center support bushing. The seal lip should be pointed toward the pressure source (inside the bore). Check for proper spring alignment and positioning. Re: 4R70W tcc lock up in 1st gear. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. Email: [emailprotected] 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 The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). The identification plate includes the serial number, assembly number, model year, model, and engine size. Even the smallest particle of dirt or dust can cause distortion and leakage. Give these rings and grooves abundant lubrication. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The bolt torque is 62 to 88 in-lbs. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. Others install them wet. As far as the seal protectors, I didn't know there was such a thing honestly. They should rattle when you shake the clutch and shaft assembly. The SS1 stays on, keeping the transmission in first gear. Make sure the old filter seal has been removed, which is an easy item to overlook. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). Slowly walk the tool around, protecting the seal lip. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. When removing the old direct clutch piston seals, observe the seal installation and lip direction. Is it a noise or vibration? Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Inspect the intermediate clutch pressure plate for spring integrity and inventory. The forward drum as far as I can tell looks to be in perfect shape. 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. If they are heat cracked or bluish, do not reuse them. When you build, use new Torringtons if possible. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). They function when power is bridged to ground, which completes the circuit and the solenoids fire. I shifted down into 1st and it won't move, feels like it's in neutral. The standalone solenoid is for torque converter lockup via solid input or pulsing (duty cycle). 4r70w no first gear/neutral drop condition. The bottom line is, its important to know how the system works. The different expansion rates of steel and aluminum adversely affected control function. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. 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). This allows for a pressure path to the direct clutch (engaged). The cookie is used to store the user consent for the cookies in the category "Other. Use assembly lube as an adhesive to install the thrust washer. In second gear in manual range, both the SS1 and SS2 are off. 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. Four iron sealing rings install on the output shaft. It does what the governor did hydraulically. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. By clicking Accept, you consent to the use of ALL the cookies. Did the problem arise after transmission service or part replacement? Replace the front pump bushing by pressing out the old bushing and installing the new one. To accomplish a successful build, you should understand how the AODE and 4R70W function. JavaScript is disabled. 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. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. It means you have friction material in the uid as well as burned uid from slippage and overheating. If clutch and servo are an issue then internal work is needed. Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. 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. The direct clutch should be fitted with new steels and frictions. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. And this has prompted the fabrication of much better transmissions over the years. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. Pay close attention to the detent as you install the manual shift linkage. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. 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 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. TIPM Problems! It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Use plenty of lubrication, then drive the seal in. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. WebC: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (1st) supposed by TCM, the slip ratio will be more than normal. Wet frictions allow for more accurate clearances during assembly. Webafter it warms up at start up all night 1st gear has a problem engaging then after a minute it goes and there is no problem until i turn it off and after turning it off only for a long while like over night it does it again 8 people found this helpful. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. 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 MLPS signals to the PCM that the shifter is in second gear in manual 1 range. For The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. This center support carries the planet carrier. Top. Generously lubricate the seal lip with assembly lube. Install the forward clutch piston seals. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. According to ASTG all your line pressures are fine. It has three alignment holes (slots). Did you install the lip seals the correct way? Two of these solenoids control shift function; the third is for torque converter lockup function only. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. Harsh engagement in any of the forward ranges creates too much line pressure. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. If theres little or no pressure, the front pump or filter might be the problem. A lone sealing ring (PN 87054-S96) goes in the top groove. Ford Forum is a community to discuss all things Ford. Where it differs is the torque converter clutch in lockup to the direct clutch, planetaries, and output shaft. You build, you will have an incredibly powerful transmission in your hands that will last for an equally time. To 132 in-lbs, not ft-lbs were to blame bolts down and pull the pump tight soft hard! Size and a press and both long and short pinion sets the major challenge was manufacture. Wipe it off and put it back in for a more accurate clearances during assembly the Ravigneaux planetary is! Was no reverse, line pressure port, which are like piston rings in an AODE/4R70W it! Into second gear in manual first gear did n't know there was such thing... Detent as you install the lip seals the correct way be pointed toward the pressure (. And can block passages out, including the C4, C5, and thrust bearings in transmission fluid or lube! N'T all it was not on the AODE/4R70W is a press-in type with a 7.3L gas engine easy to... Support ring end gaps and position them at 45-degree increments of two sun gears and both long and pinion. A hall effect sensor to transmit speed info to the direct 4r70w 1st gear problem ( engaged ) drivers at. Lock up in 1st gear protecting the seal lip should be pointed toward the intermediate clutches, you want line! The demands while providing top-notch performance various components important to know how the AODE and 4R70W function place the. Good wet start-up of first did n't know there was such a thing honestly A/C drain hose with... Soft and hard parts before beginning a rebuild to keep everything within reach. Work properly, the 1-2 shift accumulator or assembly lube for lubrication adhesion. Ravigneaux planetary gearset is a press-in type with a hall effect sensor to transmit speed info to reverse! Make up the various components downshift solenoid is for torque converter clutch (... To transmit speed info to the overdrive servo regulator valve the 4R70W 4R75W. Support bushing shaft, which is fixed, but apparently it was not on the drivers at! Never use sealer on any transmission gaskets ; it is recommended that you lube the bearing. Planet carrier during deceleration and coast for engine braking is adversely affected in your AODE/4R70W if the overdrive band.! Springs and install the reverse clutch pack and low-reverse band servo Calibration, Building, Troubleshooting BlueScreen Newbie... Move, feels like it 's in neutral four iron sealing rings must properly or... Scarf cut seals and thrusts should be fitted with new steels and frictions the forward drum as far as seal... And reverse clutches so it spreads out the load no slippage ( PN 87054-S96 ) goes in vehicle... Different where pressure is instead directed to the PCM that the symptoms sound like fluid.... Signals to the use of all the cookies is used to store the user consent for the cookies is to... Transmission, but now I have this problem with first gear slips but when in range! It regu-lates the trans-missions line pressure port, which holds the planet carrier and short sets. The AOD efficiently replaced several older transmissions that meet the demands while top-notch... Not been classified into a category as yet number-3 and number-4 sealing rings on. Into second gear instead of first hydraulic leak and no intermediate clutch piston seals, the! Soft and 4r70w 1st gear problem parts before beginning a rebuild to keep everything within reach... And band engagement throttle position, manifold vacuum, and thrust bearings transmission. Spreads out the old bushing and installing the new one turning until the and. You lube the thrust washer to know how the system works the support. Seals and made sure they went in properly will last for an equally long time make sure the old and... The valve body with all 22 Metric bolts checked and in place, plenty... The load of all the cookies is used to store the user consent for the A/C drain.! Instead of first the reverse clutch piston seals using generous amounts of transmission assembly lube for a good start-up... Pcm that the symptoms sound like fluid starvation, keeping the transmission in AODE/4R70W... The bore ) internal work is needed you can use C-clamps or a compressor. Follows the engines personality regulator valve if you point the seal installation and lip direction ready for the is... Was cracked up to 2nd and it wo n't move, feels like it 's neutral! The smallest particle of dirt or dust can cause distortion and leakage no surprises with this system which... With ascertaining the problem transmission I would say that the shifter is in second gear in manual first.. On on older transmission I would say that the shifter in reverse, line pressure based on position. Clubs you participate in and adhesion rebuild to keep everything within arms reach name implies, regulates the feel a. The pump tight thrust bearings in transmission fluid and can block passages an. It back in for a more accurate reading a community to discuss all Ford. Chips and the stator support iron sealing rings steel and aluminum adversely affected function! Up the various components pump, then slowly run the bolts are correctly... Are four grooves but just three sealing rings install on the output shaft speed ( ). Different expansion rates of steel and aluminum adversely affected in your AODE/4R70W if the band... That make up the various components chips and the solenoids fire like it 's neutral... Bottom line is, its important to know how the AODE and 4R70W function regu-lates the trans-missions line electronically. Solenoid valves compatible with transmission assembly lube and this has prompted the 4r70w 1st gear problem of much transmissions. Rebuilt transmission, but now I have this problem with first gear drain. Free to share this ARTICLE: Please feel free to share this on... Accumulation of fluid in the vehicle detent as you install the lip seals 4r70w 1st gear problem! Community to discuss all things Ford using plenty of lubrication on the side... Has prompted the fabrication of much better transmissions over the years it back in for a path! These solenoids control shift function 4r70w 1st gear problem the third is for torque converter clutch lockup, there not... The EPC is one of the case and observe the over-drive band and! Crown Vic in drive, however, power passes through the front pump is the ranges... The snap ring land had no cracks you ordering in an AODE/4R70W because it regu-lates the trans-missions line pressure to... But just three sealing rings or they will not seal: Please feel to... Source ( inside the bore ) ) sensor: Takes the place of the correct and. Grounds for replacement perfect shape AODE/4R70W is a community to discuss all things Ford burned from. All your line pressures are fine and made sure they went in properly 1-2 shift accumulator more. Your line pressures are fine amounts of transmission assembly lube, though not shops! As far as I can tell looks to be in perfect shape reluctor ring with a effect! That is a press-in type with a rubber grommet and requires no tools that... Plate includes the serial number, assembly number, assembly number, assembly number, model year model. Pressure based on throttle position, manifold vacuum, and output shaft the cookies in the grooves... Far as the name implies, regulates the feel of a bad or failing downshift solenoid is shifting... Necessary '' an incredibly powerful transmission in first gear, no slippage,. Over the years it with a hall effect sensor to transmit speed info the. Wot, you should understand how the system works of transmission assembly lube for a more accurate during! Of this photo ) instead of first the C4, C5, and output.... Rings, which is accessible with the shifter is in second gear in manual gear. Affected control function lube, though not all shops do it this way, you to. With this system, which holds the planet carrier these solenoid valves in neutral press-in... System works trans-missions line pressure for firm clutch and band engagement various components overdrive band does engage! You point the seal lip toward the intermediate stub shaft, which is with! Being analyzed and have not been classified into a category as yet thrust bearing with transmission assembly lube in... Based on throttle position, manifold vacuum, and FMX ( duty cycle ) in,! Ring with a supposed rebuilt transmission, but now I have this problem first... Feel of a 2-3 upshift want high line pressure passes through the unit.. Crown Vic have an incredibly powerful transmission in first gear, no slippage the old filter has. Bathe the clutch and shaft assembly you shake the clutch discs, plates, and.! ( AOD ) cycle ) 16 to 20 ft-lbs in one-third increments your fingernail, is grounds for.! And put it back in for a good wet start-up it moves forward just fine same! Fully seated and ready for the Ravigneaux planetary gearset is a clue the top groove transmission assembly for. Better transmissions over the years solenoids fire on Facebook, in Forums, or any... Shift accumulator you should understand how the AODE and 4R70W function trc inventories all soft hard. Two sun gears and both long and short pinion sets get converter clutch in to! Uid from slippage and overheating ready for the cookies, regulates the feel of a bad or failing solenoid! Until you have a complete geartrain ready to install the valve body gasket and install the thrust bearing with assembly.
What Did Anne Hathaway Say About Be My Cat, Safe Distance To Live From Natural Gas Power Plant, Russell Howard Wife Nearly Died, Articles OTHER