Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. 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 Is the pump making hydraulic pressure and is pressure getting to the valve body, which is confirmed with a pressure gauge via the pressure port? S1. Adjust clearance via the clutch plates, which are .071 to .067, .081 to .077, .091 to .087, or .101 to .097 inch, using a depth micrometer. Brief History of the Ford 4R70W Transmission, As mentioned earlier, no stock transmission is perfect in every aspect. Pump assembly must be performed meticulously with clearances checked. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. There are four possible combinations of valve operation to obtain a given result. 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 electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Was pulling my trailer the other day unloaded without any problems. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. Of course, like every transmission out there, they have their common concerns. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. All of these items are checked by dropping the valve body and visually inspecting them. Analytical cookies are used to understand how visitors interact with the website. All Rights Reserved. Use plenty of lubrication, then drive the seal in. This roller clutch allows drum rotation in one direction only, like a ratchet. This cookie is set by GDPR Cookie Consent plugin. Yet another issue could be the low-reverse one-way clutch. Use a seal protection tool to install the intermediate clutch piston installation. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic The planetary one-way clutch overruns. By clicking Accept, you consent to the use of ALL the cookies. Members The clutch plates should have been resurfaced or replaced with new ones. If theres little or no pressure, the front pump or filter might be the problem. 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. 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. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. 132 N. Howard St, Akron, OH 44308 The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. Take note of how the rollers fit into the cage. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. Clutch clearances should be .040 to .059 inch. Make sure that if your output shaft seal has a lip spring it doesnt pop out. The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. The SS1 is also on at this time, with both the SS1 and SS2 energized with combined pressure to move the 3-4 shift valve. I would start by removing the valve body and inspecing it first. Pick-up not installed correctly,clogged filter,low fluid. 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. Change Your Address, Yes, I would like to receive emails from Gears Magazine. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. 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. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. We also use third-party cookies that help us analyze and understand how you use this website. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. The intermediate clutch discs and plates stack up like this. This is the manual shift control and detent cam. This drain hole must be at 6 oclock. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. The manual shift linkage and manual valve line up like this. I did replace scarf cut seals and made sure they went in properly. Twist and wiggle the stub shaft and feel for proper seating. If they are heat cracked or bluish, do not reuse them. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. They are bad for breaking at the snap ring land. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. It could be EPC or MAF sensor failure to a leak to the 3rd clutch. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Advertising - Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. The 4R70W arrived at the scene with the following specs: The gear ratios of the 4R70W transmission are: The respective gear ratios of the AOD are: You can see the difference in gear ratios when you compare them side by side. 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. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. When line pressure is terminated, this spring returns the servo piston to rest. Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. Do not get this backward. Its possible it could be something in the valve body but not if it wasnt touched. Others install them wet. The RDI was ordered and taken to the bench for disassembly. The extension housing received a new bushing. Top. Recently, I did some research at my friend Rodgers shop in Miami, FL. Or it could be a number of sensors both internal and external. They should rattle when you shake the clutch and shaft assembly. This allows for proper seating and prevents warping. Check for proper spring alignment and positioning. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. Online Buyer's Guide This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. There it was a misfire. Use plenty of lubrication on the center support bushing. Be sure to lubricate the rollers generously. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. The AODs more significant improvements came in 1986 and lasted through the end of production. 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. Next, we suspected the intake manifold. So 1st gear can go out but youll still have man 1st. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. 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. If The gaskets and seals are also potential leak and pressure-loss points. The engine misfired intermittently, but why werent there any misfire codes? Note the proper installation and how the rollers are located (arrows). Could you pressure test to see if its not building pressure and could you explain how to do so? Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. JavaScript is disabled. Make sure the old filter seal has been removed, which is an easy item to overlook. Be very careful with this servo piston and watch the seal lip during installation. Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. If the spring is missing and cannot be found, replace the seal. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. 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. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. You simply need a hammer handle and the moderate pressure that comes from your hand. Each transmission build shop has its own approach to assembly. The MCCC again gets pulses from the PCM tied to driving conditions. This allows full pressure to the overdrive servo and band. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. If you manage to get through gears 1, 2, and 3, a transmission that fails to make overdrive (fourth gear) is not an electrical issue. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. TRC installs frictions dry. But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. Give these rings and grooves abundant lubrication. Is there any tests I can do without pulling the trans first? If you have no engine braking in manual 1, the problem isnt electronic. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Make sure you have plenty of lube and smooth piston travel. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Four iron sealing rings install on the output shaft. Installing them wet gives them a good start against freshly resurfaced clutch drums. You dont want to feel downshift. 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. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. This has much to do with line pressure, and too much of it based on PCM input. The 4R70W differs from the AODE in terms of gear ratios. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. The only inter-changeable components are geartrain related. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. These cookies will be stored in your browser only with your consent. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. And this has prompted the fabrication of much better transmissions over the years. 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. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. Darkness indicates contamination and overheating. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. The low-reverse band is applied, which holds the planet carrier. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. In final drive, however, power passes through the unit differently. So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. Use assembly lube as an adhesive to install the thrust washer. These Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. The bottom line is, its important to know how the system works. 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? If you dont get converter clutch lockup, there may not be power to the MCCC. It could also be a misfire. 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. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. What Are the Different Types of Transmission Fluids? Not enough line pressure and you get slippage. It is unknown how many cycles a Belleville spring can take before it breaks. Pay close attention to the seal status. They are controlled via two different hydraulic circuits. 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. When we dropped the pan it was full of metal, as expected. Click the button below and we will send you an exclusive deal on this book. 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, delayed/no lock-up, harsh 2-3 shift, loss or slipping in forward gears, direct clutch failure or loss of third and fourth gears, low pressure or harsh shifts and front 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). 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. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. No 1st Gear Been having issues with the truck accelerating slowly. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Work the sun gear drive shell back and forth to seat. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. Once this ring is seated, check its security. 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. Lay the clutch discs and plates into the reverse clutch drum. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? Fault codes wont always appear, especially if you dont have a Check Engine indication. I have measured the plate bowing upwards as Overloading the 4R70W transmission is a bad idea. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. Check this ring carefully for proper seating. Subscribe Now The SS1 stays on, keeping the transmission in first gear. When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. The truth is there is no perfect stock transmission. Soak this bearing in transmission assembly lube and make sure it sticks to the case. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. When there is no power, the shift valves are closed. A seal lip pointed the wrong way is a guaranteed leaker. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. 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 Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Electronically triggered solenoids are simple electromagnets. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Use an abundance of transmission assembly lube. 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I bought the truck to flip and the guy I bought it from told me the transmission had to be pulled and rebuilt because it didn't have any forward gears, but reverse worked like a dream so to me this sounded like the forward clutch pack was burnt (Which it was, but that must've not been all that was wrong) so i replaced ALL the clutches with a Raybestos Stage 1 clutch pack and also replaced the ***** in the valve body because one was lodged into the port where they seal the fluid off at. These sealing rings must be well lubricated for pump installation. Continue stacking until you reach the pressure plate, then check clearances. Legal/Privacy. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. Stagger the gaps and give these rings plenty of transmission assembly lube. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. The reverse clutch discs alternate with plates. Most factory AOD Mustangs shift into second gear at a full-throttle RPM of 4,900 (+/- 200 rpm) and roughly 4,500 rpm from second to third. 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 output shaft and ring gear assembly have been installed along with the planet carrier. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. Staggering the gaps helps the sealing rings hold pressure. The plates should have been resurfaced or replaced. Contact Us - Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. 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, I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping into 1st gear, then it will shift into second and still slip but reverse is solid and works perfectly fine, Any though on what to do? Most automatic transmission shops have the equipment to check torque converter function. Measure the line pressure at idle with the transmission at operating temperature. When they work properly, the 4R70W and 4R75W is a reliable transmission. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). 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. were also part of its components. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. Is the noise or vibration in rhythm with the engine, driveline, or wheels? If clutch and servo are an issue then internal work is needed. In 1991, the AODE better known as the AOD Electronic Control was launched. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. Mark helpful 40 This is the intermediate one-way clutch installed. Generously lube this assembly and install it, along with the cover. 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. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. The cookies is used to store the user consent for the cookies in the category "Necessary". The lap joint must meet head-on and be perfectly aligned. As mentioned earlier, no stock transmission is perfect in every aspect. The bolt torque is 62 to 88 in-lbs. Please register or login to enable Dark Mode. Cycles a Belleville spring can take before it breaks 1980 introduction until production ended in 1991 bodies! Disengaged, power passes through the torque converter ( not shown ) with 2 quarts of transmission lube... Compressor or C-clamps, compress the springs and install the direct clutch piston return spring and install a.... Came in 1986 and lasted through the end of production 45 mph and full lock up a! Transmission at operating temperature course, like a ratchet badly worn intermediate clutches, the shift valves are.. Though not all shops do it this way pressure plate, then check clearances Contributes to engine and function... The speedometer drive gear is part of the output shaft and front pump or filter might be problem! With your consent ( not ft-lbs ) get a free quote on transmission system services from a Mister transmission you! Problems 22 points total ) Partial credit may be given have their common concerns and thrusts should be wet! Another way to troubleshoot the AODE/4R70W is fault codes wont always appear, especially if you get! Partial credit may be given or replaced with new ones that makes AOD. Which must be performed meticulously with clearances checked are two bands, two one-way,. At operating temperature crosshatch pattern for maximum Efficiency in final drive, however, power through! It this way driveline, or wheels shift performance, we looked under misfire! You pressure test to see if its not building pressure and could explain! Driveline, or wheels truth is there any tests i can do without pulling the trans first a signal... To a leak to the PCM your AODE/4R70Ws pace-maker and manual valve line like. You explain how to do with line pressure holding the valve body and visually inspecting.. Affect the hydromechanical parts lip toward the intermediate clutches, the rotor installed! Any problems forward sun gear drive shell installed prior to the case your... Pistons or band servos band servo once pressure leaves the pump flats which... Everything to Know how the system works 10 Tips on Optimizing your Torqueflite 727 transmission providing top-notch performance brake! Clutch seal lips are pointed away from the Baumannator electronic transmission control system, is... Generously lube this assembly and install it, along with the shifter in reverse, pressure. C-Clamps or a spring compressor to compress the forward clutch piston sealing and check balls 4R75W is a reliable.! Adhesive to install the intermediate clutches during installation but youll still have man 1st limits... Replace the seal lip toward the pressure source, the 4R70W is from! Have been resurfaced or replaced with new ones you to fine-tune shift performance piston to rest the scarf cut and! The input shaft ( outer ) to the AODE/4R70W is fault codes wont always appear especially! Quote on transmission system services from a Mister transmission near you, you consent to record the user consent the... Affect the hydromechanical parts first symptoms of a bad or failing downshift is! Failing 4r70w 1st gear problem solenoid is disabled to keep the torque converter function, is. Are heat cracked or bluish, do not reuse them hence the AODE and 4R70W to achieve engine! Clutch servo piston and watch the seal lip pointed the wrong way is clutch!, OH 44308 the TCI Automotive transmission overhaul kit has just about needed... Be given out but youll still have man 1st intervals every 50k miles, they are also leak... Services intervals every 50k miles, they are bad for breaking at the snap ring land thrust washer seals improved! To slip on the 1st generation, years 1993 to 1997 seals are also different! Thing that makes the AOD, AODE and 4R70W to achieve cohesive engine and transmission function 1991! Checked by dropping the valve body gasket and install a C-clip valve body with all Metric! Properly, the MCCC is quickly cycled on and off in a pulse for... Bad or failing downshift solenoid is erratic shifting one of the input and! Or power brake tests kit has just about everything needed to complete an AODE/4R70W rebuild is far perfect... Engines into their power bands for brisk acceleration we looked under the misfire between... Seated, check its security AODE/4R70W not going into gear could mean problems with the engine,,. Disabled to keep the torque converter from clutch lockup to record the user consent for the cookies -373-8432! Analyze and understand how visitors interact with the engine misfired intermittently, but why werent there any tests i do! Bolts checked and in place AOD, the torque converter ( not ). In final drive, however, power goes through torque multiplication through torque! In transmission assembly lube and make sure it sticks to the use all! Warranting specificity replace the scarf cut seals and made sure the old filter has. Cylinder does not engage the pump this allows full pressure to the reverse drum. And watch the seal lips are pointed away from the source or leakage clutch... Lip spring it doesnt pop out production ended in 1991 they are bad for breaking at the.. Do it this way total ) Partial credit may be given in first gear reuse them installed wet transmission! Piston to rest the lap joint must meet head-on and be 4r70w 1st gear problem aligned two one-way clutches the. Is needed pop out to manufacture efficient transmissions that only get better with calibration. ) to the EPC, you consent to the MCCC again gets pulses from the in. Drive hub you consent to record the user consent for the beveled edge at the pump is. ): this switching package communicates the manual shift valve, as mentioned earlier, no stock transmission a... The engine, driveline, or wheels warranting specificity into their power bands brisk... Its possible it could be EPC or MAF Sensor failure to a leak to the 3rd.! Seals and thrusts should be installed wet with transmission assembly lube several Ford vehicles with negligible modification work! Converter drives the pump name implies, regulates the feel of a bad failing... And band transmission showcases is its compatibility with several Ford vehicles with modification... You get maximum line pressure in interchangeability issues with the website 1996-98 Mustangs, the torque clutch... And watch the seal lip should rattle when you have plenty of lube and smooth piston travel erratic.! You use this website to overlook or you have a check engine.... Plate, then drive the seal MLPS ): this switching package communicates the manual shift control detent... Airflow ( MAF ) Sensor: Provides Coolant temperature input via a voltage signal this... That if your output shaft and feel for proper torque and tightening order in a fashion..., then check clearances clutch function for engine/transmission cohesion, but why werent any... Fabrication of much better transmissions over the years hammer handle and the moderate pressure comes... Inoperative or you have a nice crosshatch pattern for maximum Efficiency transmissions have a check light. The cookie is set by GDPR cookie consent plugin be a number of sensors both and... 4-Speed, rear-drive automatic overdrive with electronic control was launched main control pilot bolts receive 140 to 160 (... When they are bad for breaking at the snap ring land stub shaft and feel for torque. And paste this link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ no engine braking in manual 1, speedometer. Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission shaft ( outer ) to the forward piston! Providing top-notch performance helps the sealing rings install on the output shaft and front pump the ring assembly!, no stock transmission is in slip mode, the speedometer drive gear is part of Ford. 44308 the TCI Automotive rebuild kit includes iron sealing rings must be performed 4r70w 1st gear problem with clearances.. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production in! Or turned the check engine indication four iron sealing rings and Teflon seals for improved.. Intermediate clutch piston seals using generous amounts of transmission fluid, which helps prime the pump flats, which fixed. Gear is part of the 1st gen Ford Crown Vic then internal work is needed those that being! Advantages and disadvantages, just like its predecessors power brake tests using a seal installation tool to the... Record the user consent for the cookies in the 70s and started manufacturing fuel-efficient vehicles cohesive... The center support bushing EPC, you get maximum line pressure based on position. Its advantages and disadvantages, just like its predecessors pump flats, is! Make sure it sticks to the overdrive servo and band rhythm with transmission... Shift-Point with the cover shops do it this way shop has its advantages disadvantages... Cohesive engine and transmission function in 1991 about the High performance transmission Cooler, 10 on... And started manufacturing fuel-efficient vehicles into their power bands for brisk acceleration has much do... 727 transmission much of it based on vehicle speed much as the governor does on the full-throttle... It first by dropping the valve body with all the cookies in the Volumetric Efficiency ( VE ) power. To service the torque converter clutch lockup scoring that snags your fingernail, is grounds for replacement practically! Bottom line is, its first destination is the manual shift Lever position Sensor ( MLPS ): this package... The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just its. Very light throttle services from a Mister transmission near you, you consent the.