Th400 problems

The only issue is that this is a 168-tooth flex plate and not a 153 tooth that it appears you need. The flexplate will fit inside the TH400 bellhousing but this will require using a different starter motor since the starter on those stock engines were designed for a 153 tooth flex plate. The TCI flex plate part number is TCI-399773.Jun 27, 2006 · vader2. Registered. Joined Jun 12, 2006. 25 Posts. Discussion Starter · #1 · Jun 27, 2006. My TH400 with a forward manual valve body will not shift into first gear until the transmission is warmed up, when it is warmed up 1st gear works fine. I checked the linkage while shifting through the gears and it is going into the first gear position. May 15, 2000 · I belive if you smoke the second gear clutch pack in the th400, your reverse is adversly effected. I would put a couple extra quarts in your tranny, if that does't work, you could try dropping the... firstlinebenefits These are designed to replace a daily driver TH400 behind a stock or near stock engine and have increased service life due to our hydraulic, mechanical, and lubrication upgrades. They don't shift brutally hard; we are able to keep them reliable by using many of the features GM designed into them.Get TH400 transmission rebuilding tips, TH400 troubleshooting help, TH400 technical service bulletins, TH400 diagnostics and TH400 technical information from TRNW. hydro strike charger Another problem of the TH400 is the possibility for its transmission fluid to leak gradually into the hose if the seal is not fixed properly. The Bottom Line. An overview of the TH400 transmission shows it is a durable transmission that can give a good performance. The TH400 was used in a wide range of cars from GM as well as other manufacturers. Discussion Starter · #1 · May 11, 2010. Hi I need some help on a Th400 problem. The problem is that it shifts hard from 1st to second. It revs higher than normal and then bangs into 2nd gear. I think its a vacuum problem but this transmission has an electronic control module on the side of the transmission. I think theres a vauum line that ... toyota tacoma differential noise The trans in question is a TH400, in a 1986 blazer, CUCV m1009. The symptom is sometimes when i start it up after its been sitting, it wont go into gear. the shifter moves, and locks in place, but the truck stays in either park or neutral.Get TH400 transmission rebuilding tips, TH400 troubleshooting help, TH400 technical service bulletins, TH400 diagnostics and TH400 technical information from TRNW.8 thg 4, 2016 ... TH400 swap issues. Helping a friend out with his car. It is a 88 camaro with a stock 2000 5.3 swapped in. Its originally tuned for a 4L60e. big dog alpha mp 48 priceand if for some reason your th400 is not downshifting, then maybe it's a faulty down shift solenoid. but what do i know about transmissions anyways?!:rasta: K KILLER"B"3 …TH400 Problems. Jump to Latest Follow NEWS PARTS JEEP & 4x4 ATV & UTV 1 - 3 of 3 Posts. G. Guest · Discussion Starter ...TH400 was built and worked. Installed a Trans Brake never worked after! What could be the problem? I hope everyone enjoys thanks for watching… 👍🏼 ️🙏🏼 tamaki x big chest reader Ottawa. Feb 9, 2016. #1. So i've never had a th400 before and im a little confused on the usage of the trans brake. so my car engages great in forward gears, and seems to hold power, but reverse has a bit of a delay (3-5 seconds) and it almost seems like it slips. i have read in several threads that some units with a trans brake and rmvb ...Automatic 2 nd in a 400 is held by a clutch pack in manual 2nd the band is applied along with the clutch pack. If your shift into 2nd is soft and late but your 3rd is close to normal Then I would say you in for a o'haul. put the trans into manual low get your speed up to 20-25 mph then shift it in to 2nd hold steady on the pedal What does it do ??engine is a 9.5:1 383 with ~400-450hp in a ~5500lb truck i install the new drum with the 34 element sprag in my TH400.. torque converotr is a B&M hole shot...Jul 01, 2020 · Next likely is splines in convertor and/or the splines on input shaft are stripped. Iff you have to remove trans , make sure the stator splines (fixed spline on ft -part of pump) are blued-heat treated. If not, replace pump with hardened spline version. That spline would wear on the early units. New paint -near complete. 2 thg 6, 2018 ... Technical Th400 shift problems ... Hello all it's been a while and my car has been running great since break in 350sbc/th400.High gear problems are common with this transmission. You may be experiencing direct clutch [3rd gear] fatigue. Clutchs worn out. If so, you should be having problems in …th400-troubleshooting-guide 1/3 Downloaded from stage.independent.com on November 4, 2022 by guest Th400 Troubleshooting Guide Thank you for reading th400 troubleshooting guide. As you may know, people have search numerous times for their favorite readings like this th400 troubleshooting guide, but end up in malicious downloads. mercury zeus pods The servo controls how hard the trans shifts and when it shifts. 600 horses is a lot of power and although the TH400 is a strong trans anything is susceptible to braking. 1997 S-10 4.3L,auto, Electric fan, cherry bomb turbo muffler, rear disc swap, powertrax lock-right locker, and no more cv joints WOOT.lesson 2 problem solving practice powers and exponents answer key. 1965-1967 Chevrolet 2 Speed-3 Speed Conversion Kit TH350 TH400... Perfect for installing a TH350 or TH400 in your early Chevy 2 Chevrolet! Now you can use your factory automatic floor shifter with a newer 3 or 4 speed automatic transmission! This kit retains the rod linkage and ...Jun 20, 2012 · Leesburg, GA Burned/brittle valve body gasket. Seen that a lot in my fathers old trucks with TH350s and 400s. Of course, this is only a guess. Drop the pan, remove the valve body and take a look, its easy enough. Jun 20, 2012 #3 CDesperado Veteran Member Lifetime Gold Member Oct 1, 2004 3,673 Dallas Texas how to sponsor a nanny from the philippines to usa engine is a 9.5:1 383 with ~400-450hp in a ~5500lb truck i install the new drum with the 34 element sprag in my TH400.. torque converotr is a B&M hole shot...Jul 27, 2008 · Registered. Joined Jul 27, 2008. 3 Posts. Discussion Starter · #3 · Aug 18, 2008. TH400 Shifting Problem. Thanks to all who replied. The transmission is definitely a TH400 (Modulator is near the front on the passenger's side), and $3.00 worth of vacuum hose solved the problem! le labo shampoo review A new governor driven gear repair kit for the GM TH400 Transmission, 1965 & up. A bad governor gear will result in sudden loss of upshift.I got tired of the Heartbeat of America bleeding ATF all over my driveway, so let's fix it.My TH400 with a forward manual valve body will not shift into first gear until the transmission is warmed up, when it is warmed up 1st gear works fine. I checked the linkage while shifting through the gears and it is going into the first gear position. Any ideas??? O Oldani Motorsports Registered Joined Feb 9, 2003 593 Posts #2 · Jun 27, 2006 bootmod3 n55 horsepower A TH400 will not dyno anything close to a M6...there is no lock up on converter therefore ratio is all over the place...wanna see true numbers run it at the track! The before and after dynos are with the same tranny and converter. It's obviously losing power above 6000 rpm and there are metal shavings in the pan and filter.This is actually one of the most common problems when it comes to a faulty torque converter. 3. Faulty Torque Converter Clutch Plate There are several clutches in a torque converter. If the torque converter is locked in the drive or idling gear and does not release the transmission, you most likely have a problem with the converter clutch. westchester chamber of commerce Supplementary Table 2 presents this effect, referring to the four clinical syndromes: somatic complaints, being withdrawn, sleep problems, and aggressive behavior. “Restless and moves a lot” had an effect on the externalizing (β = 0.087, P = 0.046) and overall behavior (β = 0.089, P = 0.025) of children with ASD.May 30, 2004 · Check the adjustments, loose parts,etc. The nut that holds the lever on the shifter shaft can loosen off. You could also have a bad mount allowing the driveline to move out of alignment. Or it... About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ...1 thg 8, 2012 ... The TH400 also suffers from the same problem, but doesn't break until the 800 hp ... It's common problems aside, it's become a staple in the ...I am having issues with my th400. The park position works fine but all other shifter locations make the car go into drive. I put in a hurst floor shifter and have also eliminated it and gone through the gears manually underneath, with the same result. any ideas on this short of a rebuild? I am pretty sure this trans was going to be raced.Re: TH400 problems « Reply #7 on: September 18, 2013, 04:06:44 PM » I think I might have figured it.out, but I need to test the theory. I think my detent solenoid is stuck, cause the transmission to force downshift all the time. I dont have a tach, so im not sure when it shifts. are all co2 cartridges food grade High gear problems are common with this transmission. You may be experiencing direct clutch [3rd gear] fatigue. Clutchs worn out. If so, you should be having problems in …The Electronic Ratio Adapter (ERA) is designed to correct this problem. With the ERA, you simply hook up four wires, set the DIP switches according to the ... floral heels About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ...TH400 problems General FSJ Tech. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech: TH400 problemsHigh gear problems are common with this transmission. You may be experiencing direct clutch [3rd gear] fatigue. Clutchs worn out. If so, you should be having problems in reverse as well, especially if you try to back up on a hill.ok my th400 is doing some unusual stuff in my 75 vette. I live on a mountain so i have a steep driveway, ... TH400 problems. Jump to Latest Follow 1 - 6 of 6 Posts. S. Silver00V6 · Registered. Joined Jul 28, 2004 · 72 Posts . Discussion Starter · #1 · Mar 15, 2007. Only show ... bibliography does not appear latex overleaf Trash in the Governor spool valve caused no shift to 2nd gear and excessive slipping. I wouldn’t have thought the Governor was so important. No trash found i...TH400 problems General FSJ Tech. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech: TH400 problems view from my seat fenway concert I got tired of the Heartbeat of America bleeding ATF all over my driveway, so let's fix it.Apr 12, 2005 · i finnally got my a running again but now it won't shift. with the rear up in the air i can put the car through the gears and the wheels do spin, not as fast as they should but they do move. when the car is on the ground it won't move, i can rev it in drive and reverse and the drive shaft only twitches a little bit, and yes the trans is at the correct level of fluid, even added an extra quart ... It has a new engine and rebuilt transmission from a previous owner. It runs good but the only problems is it shifts at 2800-3000 rpm even at WOT. It isn't a problem when empty but when pulling a heavy load I could use some more power to the pavement. It came with a 700R4 that had died and the previous owner swapped in this TH400. borehamwood deaths th400-troubleshooting-guide 1/3 Downloaded from stage.independent.com on November 4, 2022 by guest Th400 Troubleshooting Guide Thank you for reading th400 troubleshooting guide. As you may know, people have search numerous times for their favorite readings like this th400 troubleshooting guide, but end up in malicious downloads.I'm having problems with my TH400 as well. I recently finished my 30' sedan just enough to take it for a spin around the block. The motor (Cad 472) runs like a top, the TH400 is another story. It was sitting for a number of years before I installed it. The fluid needs to be pretty full for the tranny to respond.Mar 09, 2010 · Automatic 2 nd in a 400 is held by a clutch pack in manual 2nd the band is applied along with the clutch pack. If your shift into 2nd is soft and late but your 3rd is close to normal Then I would say you in for a o'haul. put the trans into manual low get your speed up to 20-25 mph then shift it in to 2nd hold steady on the pedal What does it do ?? craigslist mn for rent by owner May 30, 2004 · Check the adjustments, loose parts,etc. The nut that holds the lever on the shifter shaft can loosen off. You could also have a bad mount allowing the driveline to move out of alignment. Or it... rent obd2 scanner TH400 Trans Noise Problem 6,280 views Jul 23, 2012 10 Dislike Share BrettBroski 176 subscribers My TH400 started making a loud whine noise after about a mile of drive time. Doesn't slip or... Sep 08, 2004 · I have a 1986 CUCV (6.2 dsl, D60/14B, 4.56 w/detroit rear, 42" swampers). I made a trip up to Big Bear, CA for the John Bull trail this weekend and my transmission (TH400 w/ 15,500 miles) started to act up on the way up the mountain and was an absolute bastard on the way home. It would not... Engine is a mild 403. The th400 was rebuilt about a year and a half ago. All has been fine for a while. But now..the trans acts fine on the way to work. I Go into work in the afternoon durring rush hour. Driving is a mix of city streets and freeway miles. Mostly freeway. At 55 mph the engine is at about 1800 rpm by the tack. 70 Mph is about 2500. international 4300 air pressure sensor location 22 thg 6, 2009 ... I am borrowing an '89 GMC 3500 2WD with the 454 and the TH400 ... After the fluid/filter change: At first, the tranny issue seems fixed.Mar 09, 2010 · Automatic 2 nd in a 400 is held by a clutch pack in manual 2nd the band is applied along with the clutch pack. If your shift into 2nd is soft and late but your 3rd is close to normal Then I would say you in for a o'haul. put the trans into manual low get your speed up to 20-25 mph then shift it in to 2nd hold steady on the pedal What does it do ?? Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic ... Please help improve it or discuss these issues on the talk page.The trans in question is a TH400, in a 1986 blazer, CUCV m1009. The symptom is sometimes when i start it up after its been sitting, it wont go into gear. the shifter moves, and locks in place, but the truck stays in either park or neutral. scarborough beach directions If the converter is in correctly, the fluid is up, the filter pickup tube is in properly with it's O ring up in the case, and the shift valve is in D or 2 or 1, it should move the car...if not, then there are most likely internal problems and it'll need an overhaul. It may have some sludge in the valve body. Or it may have air trapped in it.TH400 problems General FSJ Tech. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech: TH400 problemsJul 17, 2007 · If so, you probably have an issue with the manual valve not being hooked to the "rooster comb". Could be a really simple deal where the builder missed the groove in the manual valve when installing the VB, or the nut is not tight on the shaft that holds the rooster comb. You can see the "rooster comb" and the pin portion of it in this pic. motorcycle number plate flipper uk Oct 26, 2009 · engine is a 9.5:1 383 with ~400-450hp in a ~5500lb truck i install the new drum with the 34 element sprag in my TH400.. torque converotr is a B&M hole shot... Trash in the Governor spool valve caused no shift to 2nd gear and excessive slipping. I wouldn’t have thought the Governor was so important. No trash found i...Discussion Starter · #1 · Jul 1, 2020 Just took my ss396 th400 our for a shakedown run after purchasing it last week. Give it full throttle and it ran like a bat out of hell! Then I lost all … hitachi roller Pontiac Tempest. The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM 's subsidiary Holden in Australia for the 2004 to 2006 model years. The first generation of the GTO is credited as popularizing the muscle car market segment in the 1960s. maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be complied with.Apr 12, 2005 · If the converter is in correctly, the fluid is up, the filter pickup tube is in properly with it's O ring up in the case, and the shift valve is in D or 2 or 1, it should move the car...if not, then there are most likely internal problems and it'll need an overhaul. It may have some sludge in the valve body. Or it may have air trapped in it. american legion toms river menuTH400 Trans Noise Problem 6,280 views Jul 23, 2012 10 Dislike Share BrettBroski 176 subscribers My TH400 started making a loud whine noise after about a mile of drive time. Doesn't slip or...Dec 03, 2005 · 85-m1028. try a trans-go shift kit you will have to drop the pan and valve body and change out a valve, springs, check balls,and install a plug. it does come with a new set of springs for the direct clutch and thicker ring for the center support, but you will need to pull the tranny appart for those two things. this kit will make world of ... ssp18 hpa High gear problems are common with this transmission. You may be experiencing direct clutch [3rd gear] fatigue. Clutchs worn out. If so, you should be having problems in reverse as well, especially if you try to back up on a hill.Apr 12, 2005 · i finnally got my a running again but now it won't shift. with the rear up in the air i can put the car through the gears and the wheels do spin, not as fast as they should but they do move. when the car is on the ground it won't move, i can rev it in drive and reverse and the drive shaft only twitches a little bit, and yes the trans is at the correct level of fluid, even added an extra quart ... cubase Feb 14, 2009 · th400 problems. Thread starter Super6; Start date Feb 14, 2009; S. Super6 Active Member. Feb 14, 2009 #1 ... problem diagnosis, shift speeds plus more information. This book is from an Australian publisher, and covers both American and Australian applications. GM Turbo 350 Transmissions Cliff Ruggles 2015-07-15 Although not quite the stout heavy-duty performer as its big brother, the Turbo 400, the Turbo 350 transmission is a fine, durable, capable, and My TH400 with a forward manual valve body will not shift into first gear until the transmission is warmed up, when it is warmed up 1st gear works fine. I checked the linkage while shifting through the gears and it is going into the first gear position. Any ideas??? O Oldani Motorsports Registered Joined Feb 9, 2003 593 Posts #2 · Jun 27, 2006I belive if you smoke the second gear clutch pack in the th400, your reverse is adversly effected. I would put a couple extra quarts in your tranny, if that does't work, you could try dropping the... spiritual meaning of shaving your head Common Problems. The TH400 was very popular, particularly known for its strength. One of the attributes that is credited with providing this strength is the cast iron center support. Although the overall sentiment is that this is a very strong and durable transmission, some of the most common problems seen are clutch wear and hydraulic fluid leaks.If so, you probably have an issue with the manual valve not being hooked to the "rooster comb". Could be a really simple deal where the builder missed the groove in the manual valve when installing the VB, or the nut is not tight on the shaft that holds the rooster comb. You can see the "rooster comb" and the pin portion of it in this pic.When crusing it sometimes feels like its taking off in second insead of first but other times it seems to be fine. The next problem is when crusing it sometimes wants to downshift from 3rd but if i give it a little gas it will shift and stay in 3rd as long as i am dong about 45mph. lagrange funeral homes The problem may have been caused during an engine swap or minor accident. The rear main seal leaked badly too. Would a bad rear main bearing cause vibration problems? I don't see any cracks on the flexplate. I've been told that the Pontiac 400 is an internally balanced engine.Topic: Turbo 400 Problems. Posted By: 89 Lotus on 07/26/03 10:25am. Hi Gang, I have a 1990 PaceArrow with a 454 and Turbo 400 transmission.1 thg 7, 2020 ... 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 ... buns master bakery Get TH400 transmission rebuilding tips, TH400 troubleshooting help, TH400 technical service bulletins, TH400 diagnostics and TH400 technical information from TRNW.Mar 09, 2010 · Automatic 2 nd in a 400 is held by a clutch pack in manual 2nd the band is applied along with the clutch pack. If your shift into 2nd is soft and late but your 3rd is close to normal Then I would say you in for a o'haul. put the trans into manual low get your speed up to 20-25 mph then shift it in to 2nd hold steady on the pedal What does it do ?? investment apartments for sale About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators ...Pontiac Tempest. The Pontiac GTO is an automobile that was manufactured by American automaker Pontiac from 1963 to 1974 for the 1964 to 1974 model years, and by GM 's subsidiary Holden in Australia for the 2004 to 2006 model years. The first generation of the GTO is credited as popularizing the muscle car market segment in the 1960s. Joined Feb 9, 2009. 1,620 Posts. #7 · Mar 19, 2011. A 400 uses different clutch packs for forward and reverse engagement, so a clutch problem is unlikely. If you have a converter issue, it should still move. My first stab would be to hook up a pressure gauge to the tap on the side of the trans.Check the adjustments, loose parts,etc. The nut that holds the lever on the shifter shaft can loosen off. You could also have a bad mount allowing the driveline to move out of alignment. Or it...TH400 Problems. Jump to Latest Follow NEWS PARTS JEEP & 4x4 ATV & UTV 1 - 3 of 3 Posts. G. Guest · Discussion Starter ... optimum hotspot I have a 1986 CUCV (6.2 dsl, D60/14B, 4.56 w/detroit rear, 42" swampers). I made a trip up to Big Bear, CA for the John Bull trail this weekend and my transmission (TH400 w/ 15,500 miles) started to act up on the way up the mountain and was an absolute bastard on the way home. It would not...Step 1: Split the Circuits "Hydraulically" When dealing with slipping, chatter and/or individual shift failures, it is very important to see if the line pressure that is directly associated with that one shift is out of specification. This means that the pressure test must be done in that specific gear.Joined Feb 9, 2009. 1,620 Posts. #7 · Mar 19, 2011. A 400 uses different clutch packs for forward and reverse engagement, so a clutch problem is unlikely. If you have a converter issue, it should still move. My first stab would be to hook up a pressure gauge to the tap on the side of the trans. tampa ymca hours Joined Feb 9, 2009. 1,620 Posts. #7 · Mar 19, 2011. A 400 uses different clutch packs for forward and reverse engagement, so a clutch problem is unlikely. If you have a converter issue, it should still move. My first stab would be to hook up a pressure gauge to the tap on the side of the trans.Feb 21, 2007 · High gear problems are common with this transmission. You may be experiencing direct clutch [3rd gear] fatigue. Clutchs worn out. If so, you should be having problems in reverse as well, especially if you try to back up on a hill. th400-troubleshooting-guide 1/3 Downloaded from stage.independent.com on November 4, 2022 by guest Th400 Troubleshooting Guide Thank you for reading th400 troubleshooting guide. As you may know, people have search numerous times for their favorite readings like this th400 troubleshooting guide, but end up in malicious downloads.ok my th400 is doing some unusual stuff in my 75 vette. I live on a mountain so i have a steep driveway, ... TH400 problems. Jump to Latest Follow 1 - 6 of 6 Posts. S. Silver00V6 · Registered. Joined Jul 28, 2004 · 72 Posts . Discussion Starter · #1 · Mar 15, 2007. Only show ...TH400 problems General FSJ Tech. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech: TH400 problems27 thg 7, 2019 ... Several years ago, I had a turbo 400 rebuilt for my AMC. It sat in the garage for a while until I finally got around to the engine rebuild. how to thread airsoft barrel May 11, 2010 · Discussion Starter · #1 · May 11, 2010. Hi I need some help on a Th400 problem. The problem is that it shifts hard from 1st to second. It revs higher than normal and then bangs into 2nd gear. I think its a vacuum problem but this transmission has an electronic control module on the side of the transmission. I think theres a vauum line that ... Another problem of the TH400 is the possibility for its transmission fluid to leak gradually into the hose if the seal is not fixed properly. The Bottom Line. An overview of the TH400 transmission shows it is a durable transmission that can give a good performance. The TH400 was used in a wide range of cars from GM as well as other manufacturers.th400 problems. Thread starter Super6; Start date Feb 14, 2009; S. Super6 Active Member. Feb 14, 2009 #1 ...This vehicle can have either the THM400 or the 700R4 tranny. Frankly, without a little more hands-on diagnosis, it's tough to say what's wrong with it. If you ran it dry - or nearly dry - you're probably looking at a rebuild. On the other hand, it's … sf86 secret clearance reddit Mar 14, 2007 · TH400 problems. Jump to Latest Follow 1 - 6 of 6 Posts. S. Silver00V6 · Registered. Joined Jul 28, 2004 · 72 Posts . Discussion Starter · #1 · Mar 15, 2007. Only ... If so, you probably have an issue with the manual valve not being hooked to the "rooster comb". Could be a really simple deal where the builder missed the groove in the manual valve when installing the VB, or the nut is not tight on the shaft that holds the rooster comb. You can see the "rooster comb" and the pin portion of it in this pic.My TH400 with a forward manual valve body will not shift into first gear until the transmission is warmed up, when it is warmed up 1st gear works fine. I checked the linkage while shifting through the gears and it is going into the first gear position. Any ideas??? O Oldani Motorsports Registered Joined Feb 9, 2003 593 Posts #2 · Jun 27, 2006Check the adjustments, loose parts,etc. The nut that holds the lever on the shifter shaft can loosen off. You could also have a bad mount allowing the driveline to move out of alignment. Or it... vw caravelle battery size tried to rev it in neutral if it may have a stuck forward clutch pack but that is fine too, it is not driving off in neutral like it would when clutch clearance is too tight. took solenoid out to see if plunger/control valve is sticking which it doesn't, check reverse piston and all looks good too. All checks out good to me. 44 wire lowes Common Problems. The TH400 was very popular, particularly known for its strength. One of the attributes that is credited with providing this strength is the cast iron center support. Although the overall sentiment is that this is a very strong and durable transmission, some of the most common problems seen are clutch wear and hydraulic fluid leaks.I have a 1986 CUCV (6.2 dsl, D60/14B, 4.56 w/detroit rear, 42" swampers). I made a trip up to Big Bear, CA for the John Bull trail this weekend and my transmission (TH400 w/ 15,500 miles) started to act up on the way up the mountain and was an absolute bastard on the way home. It would not...I have a 1986 CUCV (6.2 dsl, D60/14B, 4.56 w/detroit rear, 42" swampers). I made a trip up to Big Bear, CA for the John Bull trail this weekend and my transmission (TH400 w/ 15,500 miles) started to act up on the way up the mountain and was an absolute bastard on the way home. It would not... declaration of readiness to proceed 2 thg 6, 2018 ... Technical Th400 shift problems ... Hello all it's been a while and my car has been running great since break in 350sbc/th400.TH400 was built and worked. Installed a Trans Brake never worked after! What could be the problem? I hope everyone enjoys thanks for watching… 👍🏼 ️🙏🏼Joined Feb 9, 2009. 1,620 Posts. #7 · Mar 19, 2011. A 400 uses different clutch packs for forward and reverse engagement, so a clutch problem is unlikely. If you have a converter issue, it should still move. My first stab would be to hook up a pressure gauge to the tap on the side of the trans. easy villain costume ideas