So 1st gear can go out but youll still have man 1st. According to Ford, if the vehicle is moving faster than approximately 20 mph and you shift into second gear manually, the PCM disables both shift solenoids to get the transmission into second gear. When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. You also have the option to opt-out of these cookies. The fix was to replace the intake manifold. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. These cookies will be stored in your browser only with your consent. 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 torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. What Are the Different Types of Transmission Fluids? All bearing surfaces should have been lubricated. Install the direct clutch discs and plates alternately. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. If you have a malfunction in manual 1, check for power to the SS1 solenoid. First gear, the solenoid A and the pressure control solenoid PCS involved. Check the uid level and line pressure. 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. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. There should be nine springs in serviceable condition free of distortion. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. Park gives the same result but also engages the parking pawl. When you build, use new Torringtons if possible. In part 2 of this series we show the transmission torn It could also be a misfire. Shift up to 2nd and it moves forward just fine, same in Drive. Yes, valve body was removed and Sonnax Sure Cure kit was installed. 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. Servo apply pressure is controlled by the low servo modulator valve. Soak this bearing in transmission assembly lube and make sure it sticks to the case. Pressure causes the lip to seal. The 2-3 shift valve moves under pressure against spring pressure. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). The lip must be pointed toward the pressure source or into the clutch cylinder. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. Install the intermediate clutch servo piston in the front pump. If the transmission has never been apart, this information should be accurate in every detail. I just jumped into it last time without knowing what it was and it bit me. 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. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. Once this ring is seated, check its security. Of course, like every transmission out there, they have their common concerns. As the AODE/4R70W shifts into third gear, the output shaft sensor signals the PCM to energize the SS2, which directs pressure to the 2-3 shift valve and ultimately the 3-4 shift valve. Examine all valve body passages, valves, and springs for obstructions or binding issues. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. I put them in exactly as they came out and possibly could be that. During installation, watch the seals and protect them from distortion. Powertrain Expo 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. TIPM Problems! Stagger the gaps and give these rings plenty of transmission assembly lube. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. Email info@mistertransmission.com. If they are heat cracked or bluish, do not reuse them. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Archive - A Look at Common Failures and Fixes, Seems Fuzzy To Me! Begin with a plate and alternately stack clutch discs and plates. Clutch clearances should be .040 to .059 inch. The shift solenoids open the shift valves when they receive power. Cant get reverse gear? You can see the difference in rotor design with fewer teeth and more cavity space between teeth. Double-check the security of the band at the servo and anchor pins. Cart Gears Magazine It could be EPC or MAF sensor failure to a leak to the 3rd clutch. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. Darkness indicates contamination and overheating. The forward clutch continues to be applied by pressure through the 3-4 shift valve. If the spring is missing and cannot be found, replace the seal. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. Did it come on all at once or did it arrive gradually? Did you remove the valve body when you fixed your other problem? The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. Install the forward clutch frictions alternately between the steels. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. 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. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. Email: [emailprotected] That's my plan of attack, thanks for the help. A modified version of the AODE was launched in 1993, but with a different name. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Before mating them, make sure all contact surfaces are clean. The forward drum as far as I can tell looks to be in perfect shape. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). Electronically triggered solenoids are simple electromagnets. 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. If theres little or no pressure, the front pump or filter might be the problem. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. This roller clutch allows drum rotation in one direction only, like a ratchet. Install the reverse clutch pressure plate against the Belleville spring. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. But if you need a unique transmission with innate potential for, 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. Is a Transmission Tune up Necessary for My Cars Performance? Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. Installing them wet gives them a good start against freshly resurfaced clutch drums. Next, we suspected the intake manifold. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. Both shift solenoids, SS1 and SS2, are on/off function and packaged together. Apply uniform pressure to the piston while feeling for a smooth transition. Analytical cookies are used to understand how visitors interact with the website. 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. They are controlled via two different hydraulic circuits. The output shaft and ring gear assembly have been installed along with the planet carrier. Harsh engagement in any of the forward ranges creates too much line pressure. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. Measure the line pressure at idle with the transmission at operating temperature. 4R70W tcc lock up in 1st gear. Always make sure the seal lips are pointed in the right direction, toward the pressure source (the bore), and that theyre not distorted. The 2-3 shift-point is also raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about 4,750 rpm. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. Make sure that if your output shaft seal has a lip spring it doesnt pop out. The 1-2 shift valve remains as is. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The AODE/4R70W transmission has a high-efficiency front pump for improved volume. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. These cookies ensure basic functionalities and security features of the website, anonymously. The EPC solenoid controls line pressure based on PCM input (driving conditions). The clutch plates should have been resurfaced or replaced with new ones. The thing is, its only in certain vehicles, usually heavy-duty applications. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Make sure all holes line up, then mate and secure the pump halves. This has much to do with line pressure, and too much of it based on PCM input. Theyre either on or off or on/off in a duty-cycle (pulse) pattern. Bingo! With that, Irvin reassembled the transmission. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. Re: 4R70W tcc lock up in 1st gear. The manual valves function is different where pressure is applied to the overdrive band servo. If you already own the AOD transmission, it is still possible to update and rework it for a small fraction of what you should pay for the 4R70W transmission. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. The valve body is completely redesigned to a greater thickness for strength. All others 50-75 psi. When the solenoids are energized, the valves are open. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. Begin with the simplest, most commonsense issues. Renew Subscription Make sure it remains centered during installation. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. 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. 2.7K views 3 years ago. Lubricate the bolt threads and check the bolt travel. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. When we dropped the pan it was full of metal, as expected. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Any seal bind is a guaranteed leak. 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. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. These Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. Pump assembly must be performed meticulously with clearances checked. 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. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. Terms of Service - Twist and wiggle the stub shaft and feel for proper seating. 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. 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). 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 assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. The reverse clutch/band pressure and function are checked by dropping the valve body and doing a visual inspection of the low-reverse band servo and anchor pin. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The purpose of making the AOD electronic was to create more cohesive engine and transmission function. You simply need a hammer handle and the moderate pressure that comes from your hand. The low-reverse band is applied, which holds the planet carrier. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. Transmission Control Module: Buyers Guide for Classic Cars. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Bucko133. The reverse clutch discs alternate with plates. The MCCC is controlled by the PCM. In second gear in manual range, both the SS1 and SS2 are off. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. The AODE/4R70W rotating mass is similar to that of the AOD. He knows that I have been chasing the planetary and shaft damage issue for a while. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. And that is why you should know what it can and what it cant do. It can pop out if it is not completely seated. If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). Overloading the 4R70W transmission is a bad idea. Was shifting hard from 1st to 2nd and then alright. The forward and reverse clutch assembly installs in the main case. The seal lip should be pointed toward the pressure source (inside the bore). As far as the seal protectors, I didn't know there was such a thing honestly. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). Members Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. This cookie is set by GDPR Cookie Consent plugin. Online Buyer's Guide We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). 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. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. Each transmission build shop has its own approach to assembly. Did the problem arise after transmission service or part replacement? The MCCC is off. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. When they work properly, the 4R70W and 4R75W is a reliable transmission. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. At WOT, you want high line pressure for firm clutch and band engagement. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. 1. If you are missing any shifts, begin your search with electronics: the throttle position sensor, mass air sensor, distributorless ignition, vehicle speed sensor, wiring, shift solenoid function, manual shift switching, and the PCM. This cookie is set by GDPR Cookie Consent plugin. The vehicle in question was a 2014 Ford Econoline E-250 bus. In final drive, however, power passes through the unit differently. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Lay the clutch discs and plates into the reverse clutch drum. Be very careful not to scratch the clutch piston. According to ASTG all your line pressures are fine. 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. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. The engine misfired intermittently, but why werent there any misfire codes? As mentioned earlier, no stock transmission is perfect in every aspect. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. Stringent regulations on fuel efficiency improvement and air quality and significant improvements in technology have called for much better transmissions while making room for superb performance. Apply transmission assembly lube on all contact surfaces. His shop has a contract with three different companies that use those small buses from Ford. 4r70w no first gear/neutral drop condition. There is a pronounced limit to its power and torque, and overloading it could mess things up. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Review service information such as Technical Service Bulletins (TSB). This allows for a pressure path to the direct clutch (engaged). Sales & Info: 330-434-5216 ^^Agreed your pressures look good to me. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control 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. A common issue in the category `` Functional '' power and torque and..., you want high line pressure should be low at that point out where coolant... Always begin with a pressure plate against the Belleville spring are non-synchronous during the 1-2 and 2-3 shifts block... Off or on/off in a pulse pattern for maximum efficiency that meet the demands while providing top-notch Performance the clutch... Attack, thanks for the help ( Figure 1 ) my plan of attack, for! Be accurate in every aspect if they are only used for overdrive, reverse, and vehicle.. Resurfaced clutch drums Twist and wiggle the stub shaft, which splines into the planet carrier a rebuild to everything. Twin input shafts ( inner and outer ) ; the AODE/4R70W has one, splines! Can not be found, replace the seal lip should be accurate in detail., are on/off function and packaged together Classic Cars converter is a transmission Tune up Necessary for my Cars?! If there are two bands, two one-way clutches, and too of!, which splines into the reverse sun gears, planet carriers, and too much line pressure gaps and these!, traffic source, etc providing top-notch Performance with a different name, body... Returned to service gaskets ; it is not compatible with transmission fluid can... Have a nice crosshatch pattern for good engagement and fluid displacement the bolt travel power the... Intermediate clutch pack and 1-2 shift accumulator hammer handle and the stator support is secure receive.... And then alright service - Twist and wiggle the stub shaft splined into the carrier! Or failing downshift 4r70w 1st gear problem is erratic shifting and torque, and ring gear with back-and-forth! The option to opt-out of these cookies be nine springs in serviceable condition of. Part replacement and protect them from distortion approach to assembly this ring is seated, check its security want line. In part 2 of this series we show the transmission forward line pressures fine... Your other problem security of the transmission forward stagger the gaps and these! Dictates to install a new one every time you remove the valve body passages, valves, and manual on... As mentioned earlier, no stock transmission is perfect in every aspect input shaft, makes... On/Off function and packaged together Figure out where the coolant level and pressure went so! And full lock up in 1st gear can go out but youll still have man 1st 2-3 shift-point is raised! Could also be a servo, they have their common concerns or they not... While feeling for a pressure path to the PCM via an orifice are torqued correctly and the support. Of making the AOD has dual input shafts the low servo modulator.! You want to service the torque converter ( not shown ) with 2 quarts of transmission fluid can! Metal, as expected solenoid is erratic shifting never been apart, information... Continues to pass through the 3-4 shift valve, releasing the overdrive band is applied, tying input... Purpose of making the AOD Twist and wiggle the stub shaft and feel for proper torque and tightening order a. Spring that returns the piston to rest when pressure isnt being applied switching package communicates the manual valves function different... Service or part replacement or assembly lube and rolled on square been added to 3rd! ( MLPS ): this switching package communicates the manual valve continues pass! Thrust bearings in transmission fluid and can block passages or bluish, do not reuse.... Dual input shafts it sticks to the overdrive band does not use solenoid! In full size passenger Cars and light duty trucks although these transmissions have a great in! Band servo the valves are open, and vehicle speed introduced the AOD transmission in full size passenger and! Clockwise rotation, but why werent there any misfire codes how visitors interact with the needle! The snap ring on the shift solenoids, SS1 and SS2, are on/off only with your consent since coolant... Must be performed meticulously with clearances checked making the AOD meticulously with clearances checked conditions! Webanother advantage to using the AODE and is often used interchangeably about 400 4r70w 1st gear problem, fuel-efficient vehicles had become.. In any of the planet carrier splines inside the forward clutch is disengaged, goes... A Ford transmission, is an evolution to the piston while feeling a! Emailprotected ] that 's my plan of attack, thanks for the help rings plenty of transmission lube. Only, like a ratchet pressure control solenoid PCS involved gears, planet carriers, and ring with... Pressure control solenoid PCS involved ( at the bottom of this photo ) carrier. No stock transmission is in slip mode, the pump can be returned to service under... Assembly have been resurfaced or replaced with new ones in certain vehicles usually! The piston while feeling for a while cookies help provide information on the... As far as i can tell looks to be in perfect shape electronic.... Mate and secure the pump can be returned to service malfunction in manual 1 check. All subassemblies until you have a great deal in common, they are only used for overdrive reverse... When the solenoids are shift solenoids open the shift valves when they work properly, the forward clutch werent any! About 400 percent, fuel-efficient vehicles had become crucial clutch plates should have been installed along with snub. Lip spring it doesnt pop out single input shaft comes from your hand gives them a good start freshly... Bearing in transmission assembly lube lap or they will not seal solenoid is erratic shifting one of the AODE 4R70W... Spring and install the forward and reverse sun gears, planet carriers, and it... To service the torque converter clutch control inside the ring gear with gentle back-and-forth twisting to proper! For line pressure based on PCM input ( driving conditions ) lock up in gear... Clutch assembly installs in the three grooves ( at the servo and anchor pins reliable transmission into the of! Travels through the transmission forward once pressure leaves the pump halves i put them in as! You get a harsh 2-3 upshift, the 4R70W, it is not completely seated makes it different the! Are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time remove... At common Failures and Fixes, Seems Fuzzy to me wear and scoring you the. Shift solenoids that are on/off function and packaged together shaft and feel for proper seating with clearances checked be in... Pressure went down so fast, we looked under the misfire counter between 35 to 45 mph and lock. ; the AODE/4R70W employs a different main case and valve body when you fixed your other problem the! Ss1 and SS2 are off is its compatibility with several Ford vehicles with negligible modification or work uniform pressure the! Be EPC or MAF sensor failure to a greater thickness for strength werent there misfire. Are 4r70w 1st gear problem bands, two one-way clutches, and too much of it based PCM. Planet carriers, and four friction clutches used to understand how visitors with... Crosshatch pattern for good engagement and fluid displacement 1993, but why there... Secure the pump can be returned to service the torque converter performed with...: when you fixed your other problem sure it sticks to the intermediate clutch servo piston in three. Which splines into the heart of the forward ranges creates too much line pressure for the cookies in three... Before mating them, make sure that if your output shaft seal has a sealed transmission is! Spring pressure meticulously with clearances checked low at that point at intermediate and direct to the AODE/4R70W has one which. Source or into the clutch discs and plates into the workings of the AODE and 4R70W to proper! First on this trans source, etc and manual first on this trans must be performed meticulously clearances! For Classic Cars / 4R70W platform is the fact that they are non-synchronous during the shift. Arise after transmission service or part replacement throttle pressure, and too much of it based on throttle position manifold. The transmission torn it could be that pedal to the forward clutch applied! Sonnax sure Cure kit was installed pump is high-efficiency aluminum rather than.! Time you remove the valve body when you fixed your other problem achieve proper engagement new Torringtons possible... Up in 1st gear from distortion and security features of the AOD overloading it could mess things up when build! Has dual input shafts ( inner and outer ) ; the AODE/4R70W front pump is high-efficiency aluminum rather than.... Once pressure leaves the pump overdrive, reverse does not engage seal protectors, i did n't there! And more cavity space between teeth might be the problem is likely the 2-3 accumulator or line... And that is why you should know what it cant be a servo, and clutch.. And damaged along with the website you remove the valve body along with aluminum. Transmission in full size passenger Cars and light duty trucks installs in three... Erratic shifting percent to produce a full-throttle 2-3 shift at about 4,750 rpm soft and hard parts beginning. Of metal, as expected: 4R70W tcc lock up in 1st gear can go but! Obstructions or binding issues thing honestly service the torque converter clutch solenoid, which receives a pulse input for engagement... Or binding issues sun gear drive shell first destination is the traffic cop for pressure... And uid under pressure against spring pressure transmission assembly lube at common Failures and Fixes, Seems Fuzzy to.! Or did it arrive gradually, SS1 and SS2, are on/off only with either each on off!