Turbo 400 transmission troubleshooting. The filter is found in this area of the transmission.

Turbo 400 transmission troubleshooting Mar 8, 2012 · hi i recently put a turbo 400 in my 67 chevelle bb with nitrous. Jan 29, 2011 · It should be the 700 r4 transmission with the 350 block, unless someone changed it out, it could be a turbo 350, if the truck is a 3/4 ton. Your going to have to replace the transmission with an older transmission like the turbo 350 or turbo 400. Unbolt all 13 transmission pan bolts (on the bottom of the TH400) and remove the pan. 586. It was a General Motors TH400 from an early 1970s Pontiac Bonneville. Aug 1, 2012 · We turned to some of the markets best transmission builders to show you how to properly diagnose your GM transmission, whether its a 4L60 or Turbo 400. It was commonly used in performance vehicles and heavy-duty applications, thanks to its durable design and ability to handle high torque. My problem is when transmission is in drive or reverse the car wants to take off and requires excessive brake pedal pressure to keep it from moving. Oct 4, 2008 · If you are using transmission oil and see no leaks on the ground I would look at the transmission as the source of the problem. just because it has been rebuilt does not mean the individual work on it did a good job. To make it easier for buyers to recognize the transmission, the TH400 was renamed in 1990 to the 3L80. Home > Construction Training Manuals > Construction Mechanic Advanced > Table 7-2. Dec 13, 2009 · The computer runs the Transmission from the signals the throttle position sensor, crank shaft sensor, and cam shaft sensor. The dipstick on the TH400 can be found inside the engine bay, on the passenger side toward the firewall (opposite the radiator). the less cost effective way is to locate used modulator from ebay or junk yard, if that does not rectified the Sep 21, 2009 · In answer to your question YES, the turbo 400 filter has a sloppy fit. Jan 21, 2020 · Hello all, Hoping for some direction on where to start troubleshooting. I can still remember the very first unit that I took apart more than 30 years ago. i also installed a b&m shift kit,(stage Jan 20, 2024 · Click here for the THM400 Transmission ID Code Guide (Courtesy of Ron Sessions' Turbo Hydra-Matic 400 Transmission, ©1987) Copy-paste this URL into your browser search bar if the above link isn’t working: TH475 Teardown and Inspection TH475 Rebuild Series TH400 Valve Body Disassembly TH400 Valve Body Reassembly TH400 Full Playlist Fluid If you were to line up every automatic transmission that GM ever produced, you’d be hard pressed to find one that is larger than the turbo 400. -Turbo Hydra-Matic Model 400 Troubleshooting List . Jump to Latest Turbo Terry Transmissions Inc Chicago. Feb 17, 2007 · I have a 1923 ford T Bucket with a Chevy 350. Jan 13, 2021 · Kickdown on a 400 happens when the solenoid is energized and it is getting 12v. 3 Signs That Indicate a Failing Turbo 400 Torque Converter Slipping. Keep in mind though that when the tranny is filled with fluid the filter will be partially supported by the fluid in SOURCE: 89 chevy 2500 silverado that was old school , vehicles with the turbo 400 transmission are equipped with an ECM controlled downshift system , when vehicle is at speeds below 70 mph a forced (detent) downshift is possible by fully depressing the accelerator,when the ECM detects a drop in manifold vacuum Sep 25, 2017 · Torque specs for these bolts are 12-13 ft. If your car shudders when you start it and put it in gear, the chances are that your torque converter is damaged. since 1972 773. Save Share Reply A Turbo 400 transmission, also known as the TH400 or Turbo-Hydramatic 400, is a three-speed automatic transmission that was produced by General Motors from 1964 to 1990. Mar 25, 2011 · T-400 whine noise problem Jump to Latest 54K views 17 replies 6 participants last post by UngerMarkus Jul 17, 2011 GM was the primary manufacturer that used the 400, but gradually, the transmission found its way into a more versatile set of vehicles, like the Rolls-Royce and even the military jeep. new shift modulator too. It will be on the passenger side of the transmission and have a vacuum line attached to it. 1065. Find troubleshooting charts, line pressure specs, and much more! Learn how the Th400 vacuum modulator diagram can help you understand the inner workings of your transmission and troubleshoot any issues. Nov 12, 2009 · reverse is slipping in my turbo 400 i have a turbo 400 in my 78 chev 4x4 it goes fine in all the forward gears but - Chevrolet 1979 C/K 3500 question Search Fixya Press enter to search. Apr 17, 2023 · Bottom fitting at transmission is pressure but if plumbed correctly bottom fitting on the cooler assuming a cross flow radiator is return. If you have trouble getting at the rear bolts on the trans pan, you may need to unbolt the trans mount and lift the tailshaft a little with a jack to get enough room to get it there. this trans was rebuilt with new plates composites bushings and seals. Mar 30, 2010 · Transmission - turbo 400 shifting problems - i am having trouble with a trans that i rebuilt shifting at higher rpms (between 4 and 5 thousand) at normal driving throttle pressure. Learn how to repair, overhaul, or service the Turbo Hydra-Matic 400 transmission with this comprehensive manual. Filter kits, which include the filter and a new pan gasket, can be found at any auto parts store. I'm speaking for GM cars from the mid to early 70's which I work on. The TH400’s high-level of adoption could be tied to its remarkable features, and it proved that people can once again rely on GM transmissions. The filter is found in this area of the transmission. -lbs. i wrapped the lines with a rab where they screw into the tranny its dry so Feb 27, 2008 · Transmission & Driveline I don't know if this would be related to my problem? 1970 Chevelle SS 396 (491 now) 4spd 1969 Nova 496 Turbo 400 Dana 60. It seemed like the task of removing parts from the case would never end. i had it built at a local tranny shop, it keeps leaking i checked the pan gasket not coming from there i look up looks like its coming from the lines so i take the old metal tubing lines off replaced them with braided lines with AN fittings still leaking. . This popular transmission was found in GM’s cars, as well as, Rolls-Royces, Jeeps, Jaguars, Ferraris, etc. Automatic transmissions have always fascinated me. if you have 3 gears and over drive it is a 700 r4 only 3 gears turbo 350 Apr 25, 2014 · I got a 1990 chevy truck with a turbo 400 transmission that wont shift to 3rd till 62 mph. New pump, new clutches, steels, bands, etc. Apr 7, 2010 · Turbo 400 2nd gear problems. As soon as you notice problems in its working, visit your auto mechanic to get it fixed or replaced, either with a turbo 400 torque converter or any other. If you have a turbo-hydromatic 400 transmission look at the modulator valve. If it was lined up with a 200-4R , TH350 , or 4L60E it would be easy to identify a TH400. It is just huge. Ill. Jun 25, 2012 · SOURCE: I have a 1966 Ford Falcon with a C4 transmission. Change the filter. The valve in the center opens and fluid is dumped from the passage that is normally blocked, which tells the valve body it's time to shift to a lower gear. The first thing to check if you suspect that the transmission is acting up is the automatic transmission fluid (ATF) level in the transmission itself. I would begin by replacing the filter if its not new, 2 possibility of issue, faulty shifting module or defective transmission rebuilt. Fresh full manual TH400 build with forward pattern VB. Want Answer 0. This is a real pain in slow traffic and stop signs. Even the valve body, which on […] Nov 12, 2009 · reverse is slipping in my turbo 400 i have a turbo 400 in my 78 chev 4x4 it goes fine in all the forward gears but - Chevrolet 1979 C/K 3500 question Search Fixya Press enter to search. It has a Weiand 6-71 supercharger and a turbo 400 auto transmission. The TH400 or Turbo 400 is a good transmission that was used in several cars years ago. The 700R4 is torqued to 18 ft. -lbs for the Turbo 350 and 400. Explore a detailed breakdown of the vacuum modulator components and their functions. Replace the filter and fill the transmission with new ATF (the TH400 requires six quarts). Previous Page Next Page. If you are used to a Power Glide or turbo 350 filter, the fit just does not feel right. When it's time to get the car e-tested, that's when your going to run in to problems, due to the year your Chevy is. xdodn izmyrcyw xabvd muy wqglas wppij zea amhm ynwpj srvs