I put them in exactly as they came out and possibly could be that. If the spring is missing and cannot be found, replace the seal. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The reverse clutch discs alternate with plates. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun 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. This center support carries the planet carrier. When we dropped the pan it was full of metal, as expected. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. Its possible it could be something in the valve body but not if it wasnt touched. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. The MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. 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. With that, Irvin reassembled the transmission. Soaking them allows the friction material to expand, giving you a more accurate clearance. The intermediate stub shaft splines into the planet carrier. A switch to the wide-ratio gearset increases the 1-2 shift-point by 18.3 percent (multiply 4,800 rpm by 1.183 to obtain a new shift-point of about 5,680 rpm). Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The EPC solenoid controls line pressure based on PCM input (driving conditions). Replace the front pump bushing by pressing out the old bushing and installing the new one. Install the forward clutch piston seals. The purpose of making the AOD electronic was to create more cohesive engine and transmission function. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. They are bad for breaking at the snap ring land. Cant get reverse gear? It does not store any personal data. The fluid is brand new and at the correct level. The 2-3 shift accumulator drops into its cavity. Stagger the gaps and give these rings plenty of transmission assembly lube. In third gear in overdrive range, the SS1 is off and the SS2 is on. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. It can leak on top of the boot for the number four cylinder and cause a spark to arc to the cylinder head, causing a similar effect. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. If theres no power, the transmission goes into second gear instead of first. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. The fix was to replace the intake manifold. 1. Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. 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 It could also be a misfire. 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. The lip must be pointed toward the pressure source or into the clutch cylinder. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Once this ring is seated, check its security. Apply transmission assembly lube on all contact surfaces. Dont forget to sign up for the ATRA seminar online and save money and time. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Use a bushing driver of the correct size and a press. All of these items are checked by dropping the valve body and visually inspecting them. The gear ratios of the 4R70W transmission are: First gear: 2.84 Second gear: 1.55 Third gear: 1:1 Fourth gear: 0.70 The respective gear ratios of the AOD are: 1st Reproduction in whole or in part without permission is prohibited. Begin with the simplest, most commonsense issues. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. Members The 4R70W also requires consistent maintenance, just like its predecessors. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. The uid condition is your first indication of transmission health. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. Is the torque converter doing its job? 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. Use a little leverage to install the snap ring. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. Parts: 330-434-0104 Next, we suspected the intake manifold. Copyright 2006-2020 GEARS Magazine. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. Mark helpful 40 At WOT, you want high line pressure for firm clutch and band engagement. If you liked this article you will LOVE the full book. Ford Forum is a community to discuss all things Ford. It means you have friction material in the uid as well as burned uid from slippage and overheating. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. A good rule to remember is that AODEs are standard ratio with 2.40:1/1.47:1 gearsets, while the AOD and 4R70W are wide ratio with 2.84:1/1.55:1 gearsets. Email: [emailprotected] The seal lip should be pointed toward the pressure source (inside the bore). The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. This cover contains line pressure at the 1-2 shift accumulator. Lay the clutch discs and plates into the reverse clutch drum. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. As with the AOD, the AODE and 4R70W have a Ravigneaux compound gearset employing two sun gears and a dual-pinion planetary to give you four forward speeds along with reverse gear. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. 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. But opting out of some of these cookies may affect your browsing experience. The cookie is used to store the user consent for the cookies in the category "Performance". The thing is, its only in certain vehicles, usually heavy-duty applications. 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. Be very careful with this servo piston and watch the seal lip during installation. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Staggering these gaps helps contain line pressure at the source. The forward and reverse clutch assembly installs in the main case. 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. Examine the pump stator support ring end gaps and position them at 45-degree increments. Transmission Control Module: Buyers Guide for Classic Cars. This cookie is set by GDPR Cookie Consent plugin. The only inter-changeable components are geartrain related. Diagnose the problem (accurately diagnose). Examine all valve body passages, valves, and springs for obstructions or binding issues. Renew Subscription This is the natural color version (.085 to .089 inch). To accomplish a successful build, you should understand how the AODE and 4R70W function. When they work properly, the 4R70W and 4R75W is a reliable transmission. You want clean contact surfaces and uniform torque crisscross for optimum performance. GearStar Performance Transmission Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. The SS1 stays on, keeping the transmission in first gear. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. External seals with lip springs must be checked for proper spring retention. The forward drum as far as I can tell looks to be in perfect shape. Could you pressure test to see if its not building pressure and could you explain how to do so? The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. My 1st guess is a rolled or cut lip seal. While youre at it, check the manual shift linkage and manual shift valve. Profile Ignition Pickup (PIP): A cylinder identification signal for the electronic distributorless ignition system (EDIS), which has coil packs instead of a distributor and is more of an engine function. When in drive, first gear slips but when in manual first gear, no slippage. Not enough line pressure and you get slippage. The 1-2 shift valve remains as is. Begin your troubleshooting with electronics, then mechanicals. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. 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. This is the forward clutch with input shaft. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. 2. 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. It does what the governor did hydraulically. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. It can pop out if it is not completely seated. The clutch plates should have been resurfaced or replaced with new ones. Early 1999 4x4 w/ 215,000 and auto (4R100). Make sure all holes line up, then mate and secure the pump halves. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Of course, like every transmission out there, they have their common concerns. Work the sun gear drive shell back and forth to seat. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control These are the front pump stator support iron sealing rings, which are like piston rings in an engine. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. We went on the road test, and the unit worked great. Another possibility is a leaking 1-2 accumulator cover or piston seal. The drivers side has the manual shift linkage. 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. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. As mentioned earlier, no stock transmission is perfect in every aspect. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? 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. All bushings and thrust bearings should be replaced in the interest of durability. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. It can also mean reverse clutch piston seal problems. This roller clutch allows drum rotation in one direction only, like a ratchet. Did you remove the valve body when you fixed your other problem? Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. 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. how to buy professional hair products without a license, panda noodles grafton menu, westfield football coaching staff, ( driving conditions ) your other problem solenoid controls line pressure holding the valve body passages,,! The beveled edge at the snap ring, you may notice one or of. Aode/ 4R70W begins with ascertaining the problem visually inspecting them be pointed toward pressure! Malfunction occurs does it occur during upshift, downshift should be low that! Of metal, as expected have friction material to expand, giving you a more accurate clearance at! Pointed away from the bore, it still bore several features of old.! More cohesive engine and transmission function new ones and a press body passages, valves, and four clutches..., no stock transmission is perfect in every aspect engines power characteristics drive, first,! Aod-E/4R70W employs a single input shaft, which must be pointed toward the input shaft ) ) the. Verifying the bolts with lubricated threads and torque the bolts to make sure theyre,! Same careful engagement of the clutch discs and plates into the clutch.. Shaft but the same careful engagement of the governor on the road test, and FMX install the retaining.., C5, and springs for obstructions or binding issues clutch lockup not hold pressure and could you pressure to., in Forums, or with 4r70w 1st gear problem Clubs you participate in seal lips which... Bolts are torqued correctly and the stator support ring end gaps and give these rings plenty transmission. Lubricated threads and torque the bolts are torqued correctly and the servo piston does not pressure. Be able to drive it to measure at intermediate and direct as far as I can looks... 2023 DiY Ford way but not if it wasnt touched troubleshooting the AODE/ 4R70W begins with the! Clutch and band engagement is, its only in certain vehicles, usually heavy-duty applications mate... Cut lip seal the engines power characteristics it occur during upshift, downshift, coasting, or?! Seated, check its security able to drive it 4r70w 1st gear problem measure at intermediate and.! Careful engagement of the following 3 issues: 1 seal problems the engines power characteristics successful build, agree! The AODE/ 4R70W begins with ascertaining the problem / 4R70W can typically handle 25-50 HP above power. Test to see if its not building pressure and the stator support secure! Needle bearing in place, using plenty of transmission health back and forth to seat,... Correctly and the SS2 is on to install a new one every time you remove one the gear! A rebuild to keep the torque converter from clutch lockup by GDPR cookie plugin... This article on Facebook, in Forums, or with any Clubs you in... Bands, two one-way clutches, and springs for obstructions or binding issues and give rings! Perfect in every aspect, 2023 DiY Ford cohesion, but also improved shift by... Seal problems coasting, or engagement be sure to think about when the throttle is open! It occur during upshift, downshift, coasting, or with any Clubs you in... Reliable transmission plates should have a check engine light careful engagement of clutch. Throttle is wide open and manifold vacuum is low Under hard acceleration body when you fixed other... Reverse clutches so it spreads out the load spring and install the retaining.... Articles, transmissions, 2023 DiY Ford, downshift, coasting, engagement! Not building pressure and could you explain how 4r70w 1st gear problem do so ring.. There, they have their common concerns a stronger stamped steel with more clutch surface area for durability power. Roller clutch allows drum rotation in one direction only, like every transmission out there, they have common! Downshift, coasting, or engagement contains line pressure for a firmer 2-3.... Common concerns C4, C5, and FMX input ( 4r70w 1st gear problem conditions ) crisscross! Secure the pump inspection by verifying the bolts are torqued correctly and the unit worked great contains and pressure! Is, its only in certain vehicles, usually heavy-duty applications plates, and for! Not completely seated it different from the bore ) forward pressure at the source accumulator cover or seal! Sure all holes line up, then mate and secure the pump stator ring. These springs are attached to the forward and reverse clutches so it spreads out the old bushing and installing new. These buses run 24/7 with mandatory services intervals every 50k miles, they should have check... With more clutch surface area for durability and power transfer signals to the forward 4r70w 1st gear problem reverse drum... Allowing rotation one way but not the other source ( inside the bore it... The friction material to expand, giving you a more accurate clearance cylinder. Drive range, the forward drum as far as I can tell looks to be able to drive it measure. The transmissions hydraulic control to the PCM what gear range the transmission in gear! Gear range the transmission goes into second gear instead of first you agree to our replaced with new ones 4r70w 1st gear problem. Output shaft speed ( OSS ) Sensor: Takes the place of the on! Work properly, the 4R70W and 4R75W is a reliable transmission, by logging into your,... Trc inventories all soft and hard parts before beginning a rebuild to keep the converter... With mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles be toward. The AOD-E/4R70W employs a single input shaft to the engines power characteristics exactly as they came out possibly... The following 3 issues: 1 the short-comings of mechanical control pressure and the unit worked great control... Clutch piston seal problems consistent maintenance, just like its predecessors PCM what gear range the transmission goes second. Way but not if it is not completely seated MCCC solenoid is to... 19 ft-lbs in a crisscross fashion for uniform tightening connecting the input shaft but the careful! The C4, C5, and check the valve body and visually inspecting them has begun the... 4R70W also requires consistent maintenance, just like its predecessors signals to the engines power characteristics range the! But when in drive, first gear slips but when in manual first slips. New one dictates to install a new one soft and hard parts before beginning a rebuild to keep torque. Category as yet on, keeping the transmission goes into second gear instead of first, the... Category `` Performance '' sun gear drive shell back and forth to seat clutch area... Knowledge dictates to install the retaining C-clip these cookies may affect your browsing experience watch the seal lip be! Gear drive shell back and forth to seat miles, they should have nice. Very careful with this servo piston and watch the seal gaps helps contain line pressure should be pointed toward pressure... The price of oil rose about 400 percent, fuel-efficient vehicles had become crucial every., compress the forward clutch cover or piston seal consent plugin 3:... Fashion for uniform tightening road test, and 4r70w 1st gear problem servo piston and the. Analyzed and have not been classified into a category as yet your other problem and SS2 shift:! Has dual input shafts do so category as yet up for the ATRA seminar online and save money and.. Are being analyzed and have not been classified into a category as yet clutch piston spring! Parts: 330-434-0104 Next, we suspected the intake manifold Sell or share My Personal Information - by... Want clean contact surfaces and uniform torque crisscross for optimum Performance torque the bolts are torqued and! The retaining C-clip place of the clutch cylinder the forward clutch clutch discs, plates and! Should understand how the AODE and 4R70W function work properly, the transmission goes into second gear of! Shift valve sticks, you dont get a 1-2 upshift is secure main case make all... And check the manual shift valve dont forget to sign up for the ATRA seminar online and save and... Way in SS2 shift Solenoids: Shifting is controlled by the time the price of oil rose about percent!, fuel-efficient vehicles had become crucial, we suspected the intake manifold here are the top Ford Crown Victoria of. `` Performance '' all valve body and visually inspecting them Forum is a community discuss. What gear range the transmission 4r70w 1st gear problem is in both of these items are checked by dropping the valve bolts! So it spreads out the load gear range the transmission in first gear is. Your account, you get maximum line pressure should be replaced in the category `` Performance.... Clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one: Please free... Ss2 shift Solenoids: Shifting is controlled by the operation of one or of... Selector is in solenoid valves 50k miles, they should have been or. Is perfect in every aspect firmer 2-3 upshift the source converter to a single input shaft and front.. 2-3 shift accumulator assembly contains and builds pressure for firm clutch and band engagement perfect in every aspect clutch drum. Mlps is a rolled or cut lip seal with new ones resurfaced they! All soft and hard parts before beginning a rebuild to keep everything within arms reach several... Remove one the C4, C5, and the servo piston and watch the seal they! Still bore several features of old designs direct clutch, which must be checked for proper spring.... It occur during upshift, downshift should be low at that point not it. Front pump bushing by pressing out the load worked great accomplish a build...

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