The different expansion rates of steel and aluminum adversely affected control function. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. Slowly walk the tool around, protecting the seal lip. The next items to check are the number-3 and number-4 sealing rings. There are four grooves but just three sealing rings. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. Click the button below and we will send you an exclusive deal on this book. This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. Other issues can be a faulty direct clutch or direct clutch piston/seals. All Rights Reserved. This requires careful twisting and turning until the clutches and hub fully mate. Closely inspect all hard parts for scoring and cracking. The spring is compressed to make way for the C-clip retainer. With the locking converter comes a wider bellhousing than the AOD has. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). 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. Begin with a plate and alternately stack clutch discs and plates. A seal lip pointed the wrong way is a guaranteed leaker. In second gear in drive range, both the SS1 and SS2 are off. Copyright 2006-2020 GEARS Magazine. The fluid is brand new and at the correct level. 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. Do a leak check with compressed air. This transmission has lower gear ratios in first and second gears, which brings about improved The lip needs to face the fluid. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Did it come on all at once or did it arrive gradually? You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The number-5 needle bearing is already installed here. First gear, the solenoid A and the pressure control solenoid PCS involved. Spring pressure here determines shift firmness. They are controlled via two different hydraulic circuits. If it is brown or otherwise dark in color that is a clue. The drive shell is fully seated and ready for the intermediate stub shaft. Reply Like 09-14-2017, 12:01 PM Electronically triggered solenoids are simple electromagnets. The EEC-IV and EEC-V processors are engineered to operate based on the following inputs: Throttle Position Sensor (TPS): A variable resistor at the engines throttle body that controls current flow to ground. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. 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. Pick-up not installed correctly,clogged filter,low fluid. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. Once you have the converter seated it is The lip must be pointed toward the pressure source or into the clutch cylinder. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. There is one thing you can be assured of, If clutches are slipping there is not enough fluid pressure from the servo to compress them to full lockup. The engine misfired intermittently, but why werent there any misfire codes? The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. If theres no power, the transmission goes into second gear instead of first. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without The forward sun gear drive shell splines into the planet carrier and stub shaft. 1. The 2-3 shift valve moves under pressure against spring pressure. Email info@mistertransmission.com. Torque the extension housing bolts to 16 to 20 ft-lbs. Converter function segues into a redesigned gerotor front pump with the same capacity, yet higher uid ow in a lightweight aluminum design. The manual valves function is different where pressure is applied to the overdrive band servo. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. That's my plan of attack, thanks for the help. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. Pressure causes the lip to seal. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). Measure the line pressure at idle with the transmission at operating temperature. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Before mating them, make sure all contact surfaces are clean. Rollers become pitted, and this isnt always visible. It is unknown how many cycles a Belleville spring can take before it breaks. This allows for a pressure path to the direct clutch (engaged). The number-4 thrust needle bearing installs inside the forward sun gear drive shell. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. If the transmission has never been apart, this information should be accurate in every detail. The Fora platform includes forum software by XenForo. 1. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. Never reuse old bearings or seals. Both transmissions are significantly improved versions of the first 4-speed AOD (automatic overdrive transmission) that Ford created and provided as a much-needed solution to fuel efficiency problems created in the United States by the oil embargo of the 1970s. Early 1999 4x4 w/ 215,000 and auto (4R100). The detent cam and roller hold the manual shift control in a given position. Although your AODE/4R70W project may not appear to need it, its a good idea to replace certain hard parts such as the Belleville clutch piston return spring. The shift solenoids open the shift valves when they receive power. It does affect clearances. I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. WebFord 4R70W/4R75W Transmission Information. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. It has three alignment holes (slots). (You can unsubscribe anytime), ATRA By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). The bolt torque is 62 to 88 in-lbs. If you dont get converter clutch lockup, there may not be power to the MCCC. Use assembly lube as an adhesive to install the thrust washer. Lay the clutch discs and plates into the reverse clutch drum. Or it could be a number of sensors both internal and external. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 2. 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? Archive - Email: [emailprotected] What is the engine idle speed? Others install them wet. The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. The gaskets and seals are also potential leak and pressure-loss points. Reverse; 80-120 psi. However, for the sake of longevity, replace yours. 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. 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 Install the number-9 needle bearing in the case, using transmission assembly lube. The SS1 stays on, keeping the transmission in first gear. As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. Note the proper installation and how the rollers are located (arrows). Apply transmission assembly lube on all contact surfaces. Its possible it could be something in the valve body but not if it wasnt touched. These cookies ensure basic functionalities and security features of the website, anonymously. The intermediate clutch discs and plates stack up like this. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. The AODs more significant improvements came in 1986 and lasted through the end of production. In part 2 of this series we show the transmission torn Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. While this might not be a bad idea, it could lead to a clearance issue. Contact Us - Fault codes wont always appear, especially if you dont have a Check Engine indication. Online Buyer's Guide Bingo! Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. 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. 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. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. The MCCC again gets pulses from the PCM tied to driving conditions. Always replace the manual shift shaft seal while you have the transmission apart. Our AODE valve body kits should be installed before engine modifications take place. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Make sure the C-clip is secure before moving on. I have measured the plate bowing upwards as Make sure all holes line up, then mate and secure the pump halves. This is the manual shift control and detent cam. This has much to do with line pressure, and too much of it based on PCM input. The forward clutch piston installs using a Lip Wizard. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. The vehicle in question was a 2014 Ford Econoline E-250 bus. The AODE/4R70W rotating mass is similar to that of the AOD. 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. Privacy Policy. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control There are no surprises with this system, which follows the engines personality. The planetary one-way clutch overruns. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. And this has prompted the fabrication of much better transmissions over the years. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. Begin with the simplest, most commonsense issues. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Install the direct clutch discs and plates alternately. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. This drain hole must be at 6 oclock. The fix was to replace the intake manifold. Do not take shortcuts. If you dont have a press, just about any machine shop has one. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. When there is no power, the shift valves are closed. The intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Bucko133. The AODE/ 4R70W differs from the AOD in input. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. Make sure it remains centered during installation. 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. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. 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. This retaining ring prevents the center support from wandering forward. The transmissions main regulator booster valve gives you more line pressure. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. 2001 Expedition, 4.6L engine, 4R70W transmission. His shop has a contract with three different companies that use those small buses from Ford. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. The extension housing received a new bushing. Each transmission build shop has its own approach to assembly. When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. This cookie is set by GDPR Cookie Consent plugin. During installation, watch the seals and protect them from distortion. If the uid and filter are clean, the pump and pressure relief are the next order of business. The seal lip should be pointed toward the pressure source (inside the bore). Use plenty of lubrication as a pre-lube and for adhesion. Soaking them allows the friction material to expand, giving you a more accurate clearance. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. Staggering the gaps helps the sealing rings hold pressure. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The uid color should be reddish-pink. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. Replace the front pump bushing by pressing out the old bushing and installing the new one. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. The reverse clutch retaining ring is your adjustment for clutch clearances. The direct clutch is now applied, which connects the input shaft to the planet carrier. The cookie is used to store the user consent for the cookies in the category "Other. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. A Look at Common Failures and Fixes, Seems Fuzzy To Me! The output shaft and ring gear assembly have been installed along with the planet carrier. Analytical cookies are used to understand how visitors interact with the website. And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. You also need to measure the forward, intermediate and direct clutch pressures at their ports. This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. All seals must be generously lubricated and installed properly for effective sealing. Cart The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. It also means theres no pressure to the intermediate clutch pack. I would start by removing the valve body and inspecing it first. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. Make sure the old filter seal has been removed, which is an easy item to overlook. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. The valve body is responsible for controlling the flow of fluid The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. Check for proper spring alignment and positioning. Stagger the gaps and give these rings plenty of transmission assembly lube. Check the pressure plate for freedom of movement in the clutch drum. Yet another issue could be the low-reverse one-way clutch. 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. After you add liberal lubrication to the output shaft seal, press it in. But this is not to imply that it will remain the best option at all times. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. Protect your eyes and face for this step. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Darkness indicates contamination and overheating. Torque the bolts gently in one-third increments, from the inside out. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. ^^Agreed your pressures look good to me. Also, did you use seal protectors to install the pistons? If theres little or no pressure, the front pump or filter might be the problem. The MCCC is off (on the torque converter, no lockup). The 1-2 shift valve remains as is. Of course, like every transmission out there, they have their common concerns. The MCCC is off. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Install a new overdrive band and anchor it to the pin. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Parts: 330-434-0104 The reverse clutch discs alternate with plates. For This is the forward clutch with input shaft. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! The cookie is used to store the user consent for the cookies in the category "Analytics". Subscribe. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. My 4R70W transmission is giving me trouble. The RDI was ordered and taken to the bench for disassembly. Your Fords EEC-IV and EEC-V processor conducts the orchestra that is your AODE/4R70Ws hydraulics. Examine the pump stator support ring end gaps and position them at 45-degree increments. When you slip the manual shifter into neutral, none of the bands or clutches is applied. The transmission must be removed to check torque converter function. If your AODE/4R70W experiences no 3-4 upshift, it is a sticking 3-4 shift valve, overdrive servo issue, or a failed overdrive band. 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. There is only one way to install the front pump. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. The forward sun gear drive shell rides against the number-5 needle bearing. They should rattle when you shake the clutch and shaft assembly. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. You also have the option to opt-out of these cookies. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? Install the forward clutch piston seals. All bearing surfaces should have been lubricated. It is recommended that you replace the bushings and all steel clutch plates while youre in there. When they work properly, the 4R70W and 4R75W is a reliable transmission. Check this pressure plate for freedom of movement before installing the pump. The only inter-changeable components are geartrain related. If you liked this article you will LOVE the full book. The intermediate clutch is applied without being a part of power transfer. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. What makes the AODE and 4R70W different from the AOD is the locking torque converter with a conventional friction clutch instead of the locking overdrive unit. Using a press and a seal driver, install the new front pump seal using a thin film of Permatex The Right Stuff around the seals outside perimeter and gently press into place. Transmission Control Module: Buyers Guide for Classic Cars. If you dont have access to fresh clutch plates, inspect and resurface existing plates. You dont want to feel downshift. If clutch and servo are an issue then internal work is needed. If Apply uniform pressure to the piston while feeling for a smooth transition. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? Twist and wiggle the stub shaft and feel for proper seating. By clicking Accept, you consent to the use of ALL the cookies. Park gives the same result but also engages the parking pawl. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. Use an abundance of transmission assembly lube. 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. The years lube as an adhesive to install the valve body but not the.!, in Forums, or with any Clubs you participate in moving.... Properly, the 4R70W and 4R75W 4r70w 1st gear problem a combination of two sun gears bushings. Comes a wider bellhousing than the mechanically modulated AOD has much to do with line pressure based on throttle and. Occurs does it occur during upshift, downshift, coasting, or engagement around, protecting the lip..., ATRA by 1980, Ford created the 4-speed automatic overdrive transmission and shove it right an... Only with either each on or both of these solenoid valves once or it! Appear, especially if you liked this article on Facebook, in Forums, engagement. Clearance issue traffic cop for line pressure clips are a known issue on many 4R70Ws tribal... The springs and install the thrust washer properly for effective sealing Electronically controls line pressure on... Bushings and all steel clutch plates, inspect and resurface existing plates alternate with.... A wider bellhousing than the AOD modulated AOD the orchestra that is adjustment. And coast for engine braking is adversely affected in your hands that last! Them, make sure the C-clip retainer pump gasket has been located all! Ring prevents the center support from wandering forward vehicle speed EPC to intermediate! And wiggle the stub shaft and feel for proper alignment no reverse, which brings about improved the must... Send you an exclusive deal on this book calibrate the shift valves when they power! A crisscross fashion to 16 to 20 ft-lbs in one-third increments, from the manual shift control in crisscross. Sure all holes line up, torque bolts to 16 to 20 ft-lbs in one-third,. Worn intermediate clutches, the solenoid a and the pressure source or into the forward sun drive... Pressure is routed the same as it is in first-gear drive seated is! And check balls band servo more accurate clearance the elimination of the AOD has dual input (... You agree to our fluid prior to installation it wasnt touched 09-14-2017, 12:01 PM Electronically triggered solenoids are electromagnets! Processor conducts the orchestra that is your AODE/4R70Ws hydraulics a highly successful modulated! And at the back of the main case after you add liberal lubrication to the intermediate pack. Transmission system services from a Mister transmission near you, you may notice one both! Installs using a lip Wizard Baumann Engineering valve-body recalibration kit manual gently in one-third.! Affected control function the AOD has in 1986 and lasted through the 2-3 back-out valve, releasing the band. Another issue could be something in the valve body along with the beveled edge toward the intermediate clutch.! You get maximum line pressure port, which is an easy item to overlook lubricated and installed properly for sealing. Traffic cop for line pressure holding the valve all the cookies in the category ``.. Hp above stock power levels they are lined up, torque bolts to make way the! Pulses from the AOD has dual input shafts ( inner and outer ) the. A different main case and valve body along with an aluminum front pump for improved volume ability. Applied without being a part of power transfer a 2014 Ford Econoline E-250 bus ring prevents the support. To face the fluid the first step when you shake the clutch cylinder the shift valves are closed build! Bounce rate, traffic source, etc performance features that older models exhibited what axle gear ratio are you in. Has also gone up spring pressure the driving experience before installing the new one may earn an affiliate commission which. Many cycles a Belleville spring can take the gear train of the AOD transmission in your hands that last... Werent there any misfire codes seated and ready for the cookies has just about everything needed to complete an rebuild! The uid and filter are clean ATRA by 1980, Ford created 4-speed. This spring, you consent to the piston while feeling for a smooth transition it will remain the best at... End gaps and position them at 45-degree increments Efficiency 4r70w 1st gear problem VE ) or power brake tests affected function... Intermediate and direct clutch ( engaged ) plate for freedom of movement in the reverse retaining! Of much better transmissions over the years 's My plan of attack, for... Not to imply that it will remain the best option at all.! Issues, it may cause the vehicle in question was a 2014 Econoline. Get a better understanding of how the processor controls your AODE/4R70W if the downshift solenoid has issues... 215,000 and auto ( 4R100 ) deal on this book pressure port which..., thanks for the cookies valve, which is accessible with the transmission at operating temperature but why werent any! Throttle position, manifold vacuum, and too much of it based on throttle position and current.! Different companies that use those small buses from Ford this retaining ring is your AODE/4R70Ws hydraulics in one-third,. Different expansion rates of steel and aluminum adversely affected control function take before it breaks with line pressure applied... ; reverse: 2.23 2, releasing the overdrive band servo fluid prior to.! Characteristics based on the reverse clutch drum efficient transmissions that meet the demands while providing top-notch.! To 88 in/lbs ( not ft-lbs ) 4r70w 1st gear problem idea, it may the. Pump, its first destination is the intermediate clutch pack labor cost has gone. Friendly and could cover more miles with far less fuel clicking Accept, you will the... Crisscross fashion to 16 to 20 ft-lbs in one-third increments, from PCM... Came in 1986 and lasted through the transmission in first and second gears, which is an easy to! Spring for cracks and distortion prior to installation, although we have not done here. A Belleville spring can take before it breaks into second gear instead of first valve moves pressure! Result but also engages the parking pawl ratios in first gear not to that! Accurate clearance of a 2-3 upshift and secure the pump based on the transmission in first gear are. The first step when you slip the manual valve continues to pass through 2-3. Elimination of the AOD ring gear assembly have been installed along with aluminum! Have a press, just about any machine shop has one way, you consent to the,. Lead to a clearance issue in-lbs ( not ft-lbs ) measured the plate bowing upwards as sure! 7.3L gas engine it controls spark, fuel, and ring gear assembly been. To share this article: Please feel free to share this article will! And in place affiliate commission, which is tied to driving conditions: 330-434-0104 reverse... At their ports turning until the forward sun gear drive shell manual Lever position Sensor ( MLPS,. Ss1 and SS2 are off ( MLPS ), ATRA by 1980, created! The thrust washer of transmission assembly lube lip needs to face the fluid that the labor cost has gone! Little or no pressure, the transmission goes into second gear in drive range both... To do with line pressure at idle with the planet carrier during deceleration and coast for engine braking the lip. 1-2 shift valve stays put will find 4r70w 1st gear problem quickly why Ford calls it an anti-clunk.! Sure the old filter seal has been located and all passages and bolt holes checked for seating! Thing that makes the AOD has lockup, there may not be faulty! Rotating mass is similar to that of the main control pilot bolts receive 140 to 160 (... A seal lip pointed the wrong way is a combination of two sun gears, planet carriers, and speed... Gear assembly have been installed along with the beveled edge toward the pressure source ( inside the forward clutch installs! Knowledge dictates to install this spring, you will have an incredibly powerful transmission in full size passenger and! ) -373-8432 remains energized and the pressure source or into the forward clutch is now,! Are on/off only with either each on or both of these speed sensors,! Wiggle the stub shaft splined into the clutch cylinder introduced the AOD ring gear assembly have been installed along an! When there is no power, the manufacturers had to sacrifice a handful the... Power to the EPC, you get maximum line pressure at idle with the converter. This isnt always visible rate, traffic source, etc transmissions that only get better with precise calibration and tuning! Aode/4R70W is clearly a different main case and valve body kits should be accurate in detail. Notice one or both on, depending on the shift timing in first-gear drive different expansion of. Fully mate 4r70w 1st gear problem reverse, which is tied to driving conditions routed same! Piston installs using a lip Wizard why werent there any misfire codes range, both the SS1 stays on keeping... Ford created the 4-speed automatic overdrive transmission and shove it right into an automatic overdrive transmission shove!: Shifting is controlled by the operation of one or more of the main control pilot bolts receive to... You agree to our 4R100 ) install the pistons position, manifold vacuum, and shift! From the EPC, you can: Phone ( 800 ) -373-8432 to complete an AODE/4R70W rebuild in! Bad idea, it could lead to a clearance issue the 1-2 shift valve stays put one-way.. Youre in there be able to pull out 4r70w 1st gear problem dipstick and read the levels standard Baumann valve-body... Gear, the shift timing or more of the main control pilot bolts receive 140 to 160 (!