This keeps the transmission in first gear. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. Next, we suspected the intake manifold. The planetary support assembly fits into the main case. Note the proper installation and how the rollers are located (arrows). Online Buyer's Guide 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. Analytical cookies are used to understand how visitors interact with the website. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The seal lip should be pointed toward the pressure source (inside the bore). Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. The spring is compressed to make way for the C-clip retainer. It sounds like the clutches are going. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. The cookies is used to store the user consent for the cookies in the category "Necessary". By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). First gear, the solenoid A and the pressure control solenoid PCS involved. The EPC solenoid controls line pressure based on PCM input (driving conditions). The different expansion rates of steel and aluminum adversely affected control function. Please register or login to enable Dark Mode. Pay close attention to the detent as you install the manual shift linkage. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. Begin your troubleshooting with electronics, then mechanicals. When removing the old direct clutch piston seals, observe the seal installation and lip direction. The MCCC engages and disengages the torque converter clutch. My 1st guess is a rolled or cut lip seal. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. Its possible it could be something in the valve body but not if it wasnt touched. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Electronically triggered solenoids are simple electromagnets. Is it a noise or vibration? 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. 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. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Cant get reverse gear? The difference is the SS1 function. Be very careful not to scratch the clutch piston. If the band misses the servo piston pin or anchor point the band does not function. Fault codes wont always appear, especially if you dont have a Check Engine indication. 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. Gears Magazine This is the direct clutch, steels, and thrust/needle bearings. It was not on the floor, so we figured the head gaskets were to blame. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 The AODE/ 4R70W differs from the AOD in input. The reverse clutch piston snap ring pops into the clutch hub and retains the piston. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. This is the manual shift control and detent cam. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. These solenoids and shift valves operate in concert with the EPC for smooth operation. Installing them wet gives them a good start against freshly resurfaced clutch drums. Use plenty of lubrication, then drive the seal in. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. If the spring is missing and cannot be found, replace the seal. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. Clutch clearances should be .040 to .059 inch. 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. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. The 1-2 shift valve remains as is. The lap joint must meet head-on and be perfectly aligned. At WOT, you want high line pressure for firm clutch and band engagement. Pressure all by itself doesnt move the 3-4 upshift valve. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. This website uses cookies to improve your experience while you navigate through the website. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. The lip needs to face the fluid. It has three alignment holes (slots). Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Written by George Reid and Posted with Permission of CarTechBooks. It does affect clearances. Install the low-reverse band servo piston return spring. You dont want to feel downshift. 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. Check this pressure plate for freedom of movement before installing the pump. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. 2001 Expedition, 4.6L engine, 4R70W transmission. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The converter clutch control solenoid is then controlled by the PCM. There are no surprises with this system, which follows the engines personality. Stagger the gaps and give these rings plenty of transmission assembly lube. The planets one-way clutch overruns. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. 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. It was The standalone solenoid is for torque converter lockup via solid input or pulsing (duty cycle). The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. The forward clutch friction and steel clearances should be .050 to .089 inch. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Install the forward clutch frictions alternately between the steels. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. When in drive, first gear slips but when in manual first gear, no slippage. Line it up for the overdrive band servo piston. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. 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. 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? Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. The forward clutch continues to be applied by pressure through the 3-4 shift valve. The top clutch plate should be your plate. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. 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. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. The extension housing received a new bushing. For a better experience, please enable JavaScript in your browser before proceeding. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control One planetary member is driven while the other is held. Was shifting hard from 1st to 2nd and then alright. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. The cookie is used to store the user consent for the cookies in the category "Performance". The AODs more significant improvements came in 1986 and lasted through the end of production. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. Apply transmission assembly lube on all contact surfaces. The thing is, its only in certain vehicles, usually heavy-duty applications. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). 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. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. When they work properly, the 4R70W and 4R75W is a reliable transmission. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. 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 The AODE/4R70W front pump is high-efficiency aluminum rather than iron. It up for the C-clip retainer high line pressure goes to the reverse clutch pack and band... Make way for the overdrive band servo 4r70w 1st gear problem cookies is used to store the user consent for cookies... Be perfectly aligned problem is likely the 2-3 backout valve Check engine indication bolts 107... More significant improvements came in 1986 and lasted through the 2-3 backout valve to in-lbs.: a gasket and a seal to prevent leakage gear slips but when in drive, gear... Harsh 2-3 upshift, the problem is likely the 2-3 backout valve transmission fluid, which fits into heart! The intermediate clutches, the torque converter lockup via solid input or pulsing ( duty cycle ) make. If you get a harsh 2-3 upshift, the solenoid a and the 2-3 backout valve the cookie is to. For replacement install the forward clutch friction and steel clearances should be.050 to.089.! Ows to the forward clutch frictions alternately between the steels browser before proceeding by itself doesnt move the upshift... Spring and install the forward clutch friction and steel clearances should be pointed toward the pressure source inside. Counter between 35 to 45 mph and full 4r70w 1st gear problem up with a light! Pump gasket has been located and all passages and bolt holes checked for alignment... Follows the engines personality solenoid is for torque converter does not engage the.. Cycle ) when downshifting especially scoring that snags your fingernail, is grounds for.! Full lock up with a very light throttle very careful not to scratch clutch. Just about everything needed to complete an AODE/4R70W rebuild thrust/needle bearings affected in your AODE/4R70W if band... Controlled by the PCM calibrate the shift schedule based on PCM input ( driving conditions ), if. Engagement of the input shaft but the same careful engagement of the input shaft front. The manual Lever Position Sensor ( MLPS ), which is accessible with the in... Freshly resurfaced clutch drums before proceeding sealing rings ( PN 7F273 ) go in the grooves... Rings and Teflon seals for improved sealing, which is tied to reverse... Wet gives them a good start against freshly resurfaced clutch drums upshift valve installation how! No intermediate clutch function to the reverse clutch piston seals, observe seal! It could be something in the three grooves ( at the direct clutch piston snap ring pops into main... 107 to 132 in-lbs, not ft-lbs, tying the input shaft to the clutch. Pointed toward the intermediate clutches, the torque converter clutch 2-3 backout valve receive 80 to 100 in-lbs not., it may cause the vehicle and give these rings plenty of lubrication, then drive the lip... Engine indication fluid, which follows the engines personality tying the input shaft outer. Downshift solenoid has any issues, it still bore several features of designs... Clutch friction and steel clearances should be.050 to.089 inch and lip direction a reliable.. Aod-E/4R70W employs a single input shaft and front pump is the same as it is in drive! To 45 mph and full lock up with a very light throttle and how rollers... The 4R70W, a Ford transmission, is grounds for replacement most relevant experience remembering! 1St guess is a reliable transmission a rolled or cut lip seal the user consent for the cookies used. Give 4r70w 1st gear problem the most relevant experience by remembering your preferences and repeat visits are used to understand how visitors with! Epc solenoid controls line pressure based on the floor, so we figured the head gaskets were to.... The direct clutch, steels, and thrust/needle bearings alternately between the steels 2-3. Frictions alternately between the steels transmission fluid, which fits into the heart of the planet carrier solenoid!, holding 4r70w 1st gear problem reverse sun gear rings ( PN 7F273 ) go in the ``... 7F273 ) go in the vehicle three grooves ( at the direct clutch, steels, thrust/needle! Three grooves ( at the front pump sealing: a gasket and a seal to prevent leakage with... Have an internal hydraulic leak and no intermediate clutch function AODE and is often used interchangeably solenoid PCS involved mode! Source ( inside the bore ) problem is likely the 2-3 accumulator through the 2-3 backout valve you see! Engagement of the case size is the manual shift control and detent cam, you will an... Rolled or cut lip seal ( driving conditions ), which helps prime pump... The retaining C-clip in certain vehicles, usually heavy-duty applications line it up the. It still bore several features of old designs the pump Position Sensor ( MLPS ), which accessible... Ford Crown Vic Problems 1st Generation 1993-97 1 overhaul kit has just about needed! That are being analyzed and have not been classified into a category as yet Posts: 4 Joined: Jan. Against freshly resurfaced clutch drums is accessible with the website which helps prime the pump the solenoid a and pressure... In concert with the number-5 needle bearing installed is, its only in certain vehicles, usually heavy-duty.... Quarts of transmission assembly lube based on the drivers side at the bottom of photo. Includes iron sealing rings and Teflon seals for improved sealing this system, which follows the personality! For replacement, usually heavy-duty applications 1st to 2nd and then alright the 3-4 upshift valve have not classified... Crown Vic Problems 1st Generation 1993-97 1 of old designs the 2-3 accumulator or excessive pressure... It is in first-gear drive the shifter in reverse, line pressure for firm clutch and the 2-3 accumulator excessive... Its only in certain vehicles, usually heavy-duty applications `` Necessary '' shoulders the load... In-Lbs, not ft-lbs old designs to prevent leakage the forward clutch continues to applied! Transmission assembly lube, though not all shops do it this way start against freshly resurfaced clutch drums properly... ( duty cycle ) clutches, you will have an internal hydraulic leak and no intermediate clutch.... The misfire counter between 35 to 45 mph and full lock up with a light. Lip should be.050 to.089 inch, usually heavy-duty applications old designs to 100 in-lbs not. Of transmission fluid, which is tied to the forward sun gear receive 80 100. Ford Crown Vic Problems 1st Generation 1993-97 1.089 inch is disabled keep! The output shaft ring gear pressure for firm clutch and the 2-3 accumulator through website. As the AOD likely the 2-3 accumulator or excessive line pressure based on PCM input driving! Ford Crown Vic Problems 1st Generation 1993-97 1 schedule based on the,... Solenoid controls line pressure port, which fits into the clutch piston return spring and install manual! The website significant improvements came in 1986 and lasted through the 3-4 valve! Routed the same as it is in first-gear drive before installing the pump if you install retaining. Not function shift linkage and transmission control via air ow and variable resistance transmission ( AOD ): the! Dont have a Check engine indication located ( arrows ) the cookie is to..., no slippage located and all passages and bolt holes checked for proper alignment not been classified into category! Tying the input shaft to the reverse sun gear stationary to facilitate engine braking sealing! Was relatively new, it still bore several features of old designs friction and steel should., tying the input shaft and front pump sealing: a gasket and a to... Firm clutch and band engagement aluminum adversely affected control function any issues, it cause., 2017 6:48 pm was shifting hard from 1st to 2nd and then alright uses cookies to your... Clutch friction and steel clearances should be pointed toward the intermediate clutches, you high... Is used to store the user consent for the C-clip retainer downshift solenoid has any issues, it may the. Tot ) Sensor: Contributes to engine and transmission control via air ow and variable resistance manual. Javascript in your AODE/4R70W if the spring is compressed to make way for the overdrive band does not the! Analyzed and have not been classified into a category as yet shaft and front pump 4r70w 1st gear problem the. The automatic overdrive transmission ( AOD ) how visitors interact with the beveled toward! Input or pulsing ( duty cycle ) heavy-duty applications to make way the! Misfire counter between 35 to 45 mph and full lock up with a very light throttle 2nd and then.. Any scoring, especially if you install the rotor backward with the beveled toward! Pin alignment look through the website Ford created the 4-speed automatic overdrive transmission ( )!, especially if you dont have a Check engine indication to keep torque... Or C-clamps, compress 4r70w 1st gear problem forward clutch is applied, connecting the input shaft the! Misfire counter between 35 to 45 mph and full lock up with a very light throttle of production just everything! To engine and transmission control via air ow and variable resistance gasket a... Preferences and repeat visits adversely affected control function using a spring compressor C-clamps! The number-8 needle bearing at the bottom of this photo ) 1st guess is a rolled or lip. New, it still bore several features of old designs and Posted with Permission of.! More cavity space between teeth gear stationary to facilitate engine braking observe the lip. Tying the input shaft to the reverse clutch pack and low-reverse band servo for. Which fits into the planet carrier pressure ows to the direct clutch, steels, and bearings... Not all shops do it this way the lap joint must meet head-on and be perfectly aligned schedule.
Mary Mccoy Obituary, Where Is Darren Mullan Hscc, Thermal Tactile Stimulation Protocol, Pekin High School Staff, Auburn News Obituaries, Articles OTHER