Th400 slow to engage problems 3L Power Stroke Diesel - 4R100 Transmission slow to engage 1st gear - My friend stopped by last night to talk about some symptoms he is having with his transmission. Does not slip once engaged. Aug 7, 2013 · What's wierd about this problem is the consistincy of when its happening. Seems like it never went out of park. 070 in for the direct clutch pack, I see thats much more the recommended clearance of . Enough to chirp the tires even at 1/2 throttle. transbrake. Reverse, drive and 2nd gear seem to work fine, but when I put the car in 1st gear manually it will not turn the wheels. My transmission has become very slow to engage into 2nd and 3rd gears when cold. 6K views 2 replies 3 participants last post by Hutch Aug 3, 2011 I have a TCI turbo 400 and I have no reverse when cold. 70's with 1-3 shift. 89@102mph 1/8 mile 6-24 L-29 461 BBC 11. Assumed this was the cause of both issues. Mar 15, 2014 · I have a 2014 2500 with the 6. I am using neutral and t-brake for reverse. I basically have to pull the shifter at 6500 in order for it to shift at 7500 to 7800. it is also hurting the torque converter due to overcharging and thrusting itforward towards the crank. Problem worsened gradually, rectified in-the-moment by increasing engine RPMs. Problem is that it still likes to shift 1st to 2nd way early, the gov recal kit delayed it quite a bit, but still too early for my liking. I pulled the one from the Caddy for the second time and the trans shop guy took pity of me and fixed what was really wrong - the front pump has to come out and the converter/front pump bushing has to get fixed, then reassembly and a new front seal. No forward, no reverse. Problem is when the trans gets some heat in it it has a hard time moving in reverse. When I took my time in checking the fluid level I found out that the "fluid" I saw on the dipstick was being scraped off of the tube as it traveled Jan 4, 2007 · C3 Tech/Performance - 1971 TH400 slow to catch in cold morning? - My 71 TH 400 does not want to engage in the cold weather (It has dropped to 40 here in round rock, tx some mornings)/ After it engages it has a hard time shifting out of 2nd to 3rd. th400 problems. Sometimes one gear, such as reverse, relies on another clutch pack. Upshifting is fine in all gears and passing gear also works fine. I'm in 3rd, running 55, and then slow down to make a turn. 14-Bolt semi-float, 3. Jul 19, 2023 · Diagnosing Transmission Problems. 3600lb w/driver Buick GS. 5 to 2 seconds. if u have questions or need some technical info pm me. The tranny has been behind, 5 or 6 different motors, in the truck. But since we know it isn't, that's not the problem. Jun 17, 2013 · The tranny is a coan pro super th400 with manual valve body and transbrake. This happening during a race can often result in an instant red light and loss. It was new 70 passes ago. 34 element sprag with spiral lock Fully installed hipster trans brake. By "slow" I mean 30 seconds right now (it is 40 degrees outside) and 15 minutes when it was 10 to -10. Might start by pulling the pan and inspecting the linkage, and changing the filter and fluid. When a Buick Rainier encounters issues with shifting gears, it is essential to diagnose the problem accurately. To do so, consider using the following methods: Visual Inspection. It shifts fine. When you see the same or similar info more than once. Problem is the shift from neutral (or park) to either drive or reverse is very harsh when the car is idling at only about 650 RPM. After about 20-30 seconds it finally engages. I noticed a small puff of smoke. I searched TH400 shifting problems and the like. Nov 19, 2015 · What it has been doing for a while but is slowly getting worse is it has a delay on the 1 2 shift. For a Turbo 400 to go into kick down mode, 12 volts applied to the solenoid opens a passage and dumps fluid. So, I decided to remove the bottom line to the radiator. It May 31, 2014 · The problem is down shifting when slowing down or coming to a stop. Feb 15, 2009 · C3 Tech/Performance - TH400 Experts : How to setup forward clutch and direct clutch clearance? - Today I was re-assembling my TH400 and I noticed I have . I INSTALLED A SET SCREW WITH . Should I just pull it and replace or is this a problem that can be fixed without pulling it? If I should replace it who do I go with? Sep 28, 2009 · If all air checks good, you may have a too short servo pin. Someone who doesn't know the Apr 7, 2021 · Ok, for those of you who were following my thread about my shudder problem. I know it shifts, cause it not at high rpms when I have to slow down at the end of the street. Then it begins to slip (in forward and reverse) and slips more and more until there is no pull at all. Feb 3, 2012 · 1999 - 2003 7. It has seen very limited miles. Apr 17, 2023 · Newly rebuilt TH400 (local gentlemen who did it, smart as a whip w/ great reviews). If i manually shift from 1-2 however, RPMs go up another 500 or so after i move the shifter then it slams very hard into second. Behaves as though it's in neutral Can move the shifter freely and it feels/sounds like there is some activity inside, but it never even gets close to a gear. Any recommendations for burn outs? 2-3 shift still possible, not sure I should even touch 2nd. On my test run I accidentally went from the top of 1st to reverse thanks to muscle memory from my np435. Mar 11, 2019 · '90 8-lug K2500. Apr 23, 2014 · I have a th400 manual with a brake. It certainly won't pinpoint the exact source of the "clunk", but it will eliminate/confirm the entire rear drive train as the cause: Sep 15, 2016 · This is strange because I'm running a full tilt B & M turbo 400 with the same higher pressure, modified valve body and clutch plates etc. At WOT the trans shifts 1st to 2nd nicely, but 2nd to 3rd it will not engage 3rd gear (acts like it is in neutral) unless I let off Dec 3, 2020 · The Turbo 400 in my '70 GS455 is the original, numbers matching tranny that has been rebuilt sometime prior to my buying it and the shift kit is unknown. I drove from Midland down to Galveston for the weekend about 850 miles and all was great it shifted firm and positive as usual it never got above 180 even when I drove a little spirited however this morning when I got ready to come home I ran into trouble. Light throttle, trans shifts fine. May 15, 2000 · An automatic tranny is just a giant hydrolic system of on and off valves which compress the clutch packs together at certain times and engage "gears". I dumped in a bottle of Lucas, it seems it actually did improve things after a few weeks. Dec 11, 2011 · ALL of my TH400's (and I've had several) ALL leaked at the converter to case seal - and no, replacing the seal doesn't fix it. When I first start out in the truck it goes into reverse and backs up immediately. Mar 18, 2008 · i need some help asap!!!! my tranny was working fine, then i pulled it to work on the motor. 800hp BBC. I didn't not originally assemble trans but I have been in it. clearance above the forward clutch pack and about . Ok, I'm having several issues with my 79 right now. Sure enough the forward clutch cone had no significant wear but was highly glazed. Apr 23, 2012 · i have a th400 with a transbrake reverse valvebody it has worked flawlessly for about a year and a half went to town the other day and washed car got on it a couple times all seemed normal went back to garage and tried to back up and nothing solenoid clicked and nothing tried forward gears and clicked right in all three gears and solid shifts nailhead is on the right track but has it confused. However if shifted manually the shifts are very hard, which is expected due to the shift kit. It hadn't run in over 15 yrs according to the previous owner. while it was out i cleand it off before putting it back in the car and now it wont engage in any of the gears, the shifter moves through all the gears it just wont move the tires. It's almost like it isn't building up the pressure or has some kind of airlock. 060 in. the shifts are almost undetectable ,but there. 9K views 12 replies 4 participants last post by butterman2473 Sep 11, 2019 Sep 19, 2017 · I have an 05 2500 that does not immediately engage after sitting for a few hours. Oct 27, 2012 · Mines the same way, no engine braking in first gear or second gear, only engine braking in 3rd. Odometer reads 146,XXX. Reading in various forums, including this one. I think that covers drivetrain. The engine revs, but no movement. Screen was clogged. It goes into 1st, reverse and park cleanly from the get go but it really needs very high revs to get it to jump into 2nd and 3rd gears until it has been driving for about 5 minutes. I belive if you smoke the second gear clutch pack in the th400, your reverse is adversly effected. The modulator is new. 030 in. It kinda appears to me that it's developing a cross leak inside that trans,prob in the VB area,when it gets warmed up. It's a TH400 that was functioning fine, but now suddenly it will not go from Park into any gear. Sep 6, 2016 · Once eng/trans are warmed up, it is very hard ( takes a long time ) to engage from neutral or park into any forward gear or reverse. Worked great after the fluid change quick to engage. it shifts good and Jan 13, 2021 · 1965 Chevy Biscayne 460cid, 10:1cr, Brodix RRO 270, "Old School" 229/241, AED 950 HO, Air Gap, 1-7/8 headers, 3" true dual exhaust Homebuilt TH400 with Jake's Performance Stage II kit and the usual mods, 3500 Edge converter Jan 1, 2018 · Got it rebuilt and installed in September. 5. Aug 21, 2023 · Hi team!! move got a TH400 in the coupe that is shifting 1-2 & 2-3 really quickly (by 30mph). Changed the fluid and filter the other day. Apr 30, 2015 · In my F100, when I step on the gas, it F#@&ING GOES. This trans is a 90 case with many modification some are premiun friction,custom servo,modified accumulators,upgraded boost valves,modified governor,larger clutch packs many more. 12 "is the lowest you can go without experiencing problems unless you change the weight of your shift valve springs. The first step in diagnosing transmission problems is a thorough visual inspection. anyone have any ideas? ive checked the cable adjustment several times . he has some kind assembly book for a turbo 400 thats says you have to plug the hole for 3rd to have pressure with the use of the Aug 9, 2003 · I built a th400 for a friend and added a b&m shift kit, it gave nothing but problems from broken intermediate race to broken low plantairies. Thx! John Apr 7, 2010 · I had my th400 freshened up for the new race season and the first time to the track during warm up I noticed I had no 2nd gear, now 2nd gear is no totally dead it does move some just not at full load, now 1st and 3rd and rev work great, also the trans brake works fine too, I've heard the sprag is screwed, but that quickly not even a 1/4 mile on Mar 16, 2021 · I have a new Scat Pack Widebody with the automatic transmission. (fat old guys move slow under cars) I took it for a ride and at low speed were I had the problem, it shifted slightly harder than a stock transmission. Should have kept quiet about the 66, don't have a manual anymore on this AT, in my 82, the step down solenoid is energized from the ignition switch to accelerator switch, to the solenoid, and Apr 28, 2018 · This complexity means that there are many problems that can lead the transmission to delay engaging. 73, G80-optioned. Oct 9, 2018 · I rebuilt my TH400 a little over a year ago with the upgraded clutches and steels. my dads built Nov 15, 2015 · I have a fresh built th400 with slow reverse engagement. Since I normally back out of the garage or my parking spot at work I don't know if this is just a reverse issue or if it happens in 1st gear. Jul 27, 2023 · If the solenoid inside the pan was stuck, unplugging the wires from the side of the transmission would not have caused any changes. ,still have the problems. Sep 20, 2014 · -1-2 shift has some problems. Jul 12, 2013 · This TH400 is behind a ZZ502. Apr 14, 2019 · Reverse shutters a bit at first, does not engage quickly, but will engage. Jun 26, 2019 · Automatic Transmission Slow to Engage Reverse, 2003 2. Described as slow to engage in Drive. After about 10 pulls. 070. No wave plate installed either. Mar 10, 2010 · Leaving the band on in manual lo is the answer. Oct 2, 2015 · It may be the vacuum pump, that thing that in the place where a distributor should go on the back of the engine. I also dual-fed the direct drum by removing the second teflon seal and plugging the main feed hole right of the center support bolt with a 3/8" cup plug in the transmission case. Oct 29, 2014 · The next issue seems like it could be major! In the early cold mornings, say 40 degrees or less the trans will whine real loud if i dont let the motor warm up! I am wondering if this is normal on a 35 year old trans or if its a problem! Thanks! Apr 12, 2011 · any more info on the slow to engage Drive when you back out of the driveway. 4 Hemi. Trans seemed fine after that other than reverse didn't engage until 1000-1500 rpm and then it snapped in. Failed to plug the reverse hole in case. When I start the truck and immediately drop it into gear, it does not engage in reverse or forward, let it idle for a few seconds and it's fine. Its just a pain that you have to drop the pan to fix it. This chevy 400, does NOT do that. And ideas what could do this? Thank you. Sort of like it goes into nuetral right, but soon as you get on the gas it comes back and engages. I pulled the pan everything looks to be normal. It has been happening for about 1 year now but basically I can engage the mowing desk 5-6 times but after that (simliar to the original poster's issue) I pull up on the knob and I get nothing. Instead, the linkage bows and deflects a little. Band clearance must be closely checked on the TH400 and 4L80E. Jun 2, 2018 · Hello all it's been a while and my car has been running great since break in 350sbc/th400. My problem started when i shifted the car it would go on the rev limiter for a split second on both gear changes, in the shut down it was making a slight wine noise that it never did before. Mar 19, 2011 · Are you checking the fluid with it running? 2nd when you say it won't engage into forward or reverse, does it rev freely? 3rd, if you're sure it worked good before the last time you parked it, sitting a year won't bother the transmission unless it's a Chrysler torque-flight. Oct 1, 2006 · I installed my Transgo shift kit (TRG-400, installed per option 3) and all seemed to go well until I ran the car on the jack stands. I have been running a th400 on the street/strip for 3 years. Or , it will not engage in gear at all. Pull the rubber line off the modulator and see if transmission fluid comes out of the line. Any ideas? Jan 10, 2008 · This sounds like the problem. like he has to rev the engine a little bit before the vehicle moves forward. I've got a TH400 that may be dying so I'll thread jack a little. I found numerous topics discussing it. Post Reply. Jul 1, 2020 · Filter can't be blocked so tight that it doesn't even feel to engage a gear, if it was blocked that bad the pan would be chock full of debris. Also I have to over fill it to get it to work properly. How Can I Fix Delayed Oct 20, 2000 · Yes the modulator is on the passenger side under the lines. My problem is the only way to stop to winch operation after it is engaged is to cut the truck off. 140 HOLE IN CONVERTER FEED IN PUMP. Sep 21, 2024 · Fix it yourself, turbo 400's are pretty easy to do at home and you might learn some good stuff by doing it. Would a Transgo 400-3 kit solve this problem or would it be better to go with a forward manual valvebody (which I think the 400-3 makes VB manual/auto)? I know this has been covered Jun 10, 2017 · Slow to engage into forward or reverse. May 12, 2017 · Clearance on clutch pack was set to specs sent with valve body. - When I push the shifter into park, the linkage does not have enough strength to push the trans lever into park. Apr 15, 2009 · The problem: when I drop it into drive or reverse, it is really slow going into gear. When a Hyundai Tucson encounters issues with shifting gears, it is essential to diagnose the problem accurately. I have a 1967 GTO with a 1972 455 & a GM TH-400 Transmission. I installed roller rear thrust bearing, Dual feed direct with both seals missing and . Some days are better than others. Aug 3, 2011 · TH400/ Griner's 34G10 Trans Brake ? Jump to Latest 5. Oct 18, 2003 · Hey wazup, I just installed a 350HO&700r4 in my 95 Toyota 4x4,my problem is the slow soft shift from 1st to 2nd. The filling of the area under the low/reverse band servo slows the 1-2 shift. Me and a few other people have looked at this trans during it's several breakdowns. I can shift into park, if I lay on the ground and push the trans lever by hand. Mar 31, 2005 · ps; also- from day one after each rebuild all the way through till they died- IF the jeep had been sitting for a few days, when I put it in gear it would go in "sluggish"- kinda like VERY slow to engage the desired movement (IE forward or reverse) is that a common problem to TF transmissions?. Please share any useful thoughts In the morning when first start the engine and select reverse the transmission is slow to engage. To me, Jul 1, 2014 · The problem I have is part throttle shifts , late 1-2 and very late 2-3 upshifts (which I can put up with) but when getting to 3rd it drops to 2nd on let off . 565 BBC. Once warmed up, it either will not engage at all,or take 30-45 sec to BW M10 slow to engage: Post Reply : Page < 1 2 3 > Author: Message Topic Search Topic Options. 4L, RL4R01A Jump to Latest 9. Results in reverse engaging after a light jerk rearward. I do wish I had the gear vendors OD. The trans with still down shift normally and it tows fine but if im on the freeway in 3rd and i want to slow down if i drop it into 2nd it with just be neutral. Got the engine to run but the transmission will only run rough for a few minutes then it will not go into any gear. When a Volkswagen Caddy encounters issues with shifting gears, it is essential to diagnose the problem accurately. Im wondering if i need to replace the Solenoid Pack or the Governor Pressure Sensor, or both. Tight 9. Aug 9, 2003 · I built a th400 for a friend and added a b&m shift kit, it gave nothing but problems from broken intermediate race to broken low plantairies. The problem is magnified when the ambient air temperature is colder (think winter in Alaska). 2046 Views 11 Replies 3 Participants Last post by pddye, Jul 28, 2008 Jump to Latest P. I have this option available w/my valve body. And was last rebuilt, around 12 years ago. If the solenoid was stuck open, it would be permantly stuck in kick down mode. My brother ended up replacing the pick up tube and installed two O rings on it instead of one (as recommended by the internets). in Converter. Also noticed that the My transmission has become very slow to engage into 2nd and 3rd gears when cold. Trans worked great otherwise. When the shift to second gear occurs, second gear oil has to fill the 1-2 accumulator circuit which is a rather large void. trans was just rebuilt. Sep 4, 2009 · C3 Tech/Performance - TH400 shift linkage- will not engage in park. Oct 17, 2014 · The TM's and google are your friend here. Car has been street driven about 20 miles so far. Translate Topic Feb 18, 2010 · I have a TH400 on the bench that's been recently "built", and has a reverse pattern manual valve body w/brake. It engages and pulls normally until it comes up to normal operating temperature. The shift is firm but slow to arrive. The low band has to be applied, it is used in reverse and manual low. Recently the transmission started acting goofy. All I know is, it shifts really sluggishly and softly. Mar 21, 2017 · TH400 SWITCH PITCH tranny-1600rpm - 1800rpm low stall-2600rpm - 2800rpm high stall DANA 20 T-case with stock 2:1 ratio 4:10 axle gearing 36" TSL Swampersworn out and actually 35" diameter if lucky NEW SET-UP: 1969 Cadillac 472 (stock)-375hp @ 4400rpm-525ft/lbs @ 3000rpm TH400 SWITCH PITCH tranny-1600rpm - 1800rpm low stall-2600rpm - 2800rpm Dec 29, 2009 · Most TH400 manual and tranbrake units create this problem in my opinion. What does this indicate? Thanks. Drop the Pan & mark the dipstick with a File mark/notch. The delay can be as fast as a few seconds or last up to a minute. I have no idea who built the trans or where the valve body came from. Then when we took it off the dyno. Jan 6, 2011 · 1999 - 2003 7. Mar 20, 2015 · With a 4WD application; if you have an annoying "harsh engagement" condition and are unsure of the source, you can do the following. modulator, which does nothing. The band coming off on a 1/2 shift is NOT an issue. If yours is adjustable, just pull off the vacuum line and insert a small flat-blade screwdriver inside the nipple, and turn it a couple of turns clockwise to increase the pressure and delay the shift slightly or counter-clockwise to do the opposite. There is a vacuum port on the injector pump , should be 2 ports with a vacuum line for each, check to see if you have vacuum on the hose that is coming from the pump, the other goes to the modulator that is on the tranny right next to where the dipstick plugs in. Printable Version. Apr 12, 2010 · Not the Chevelle - this is son's '74 K10 (4x4). Oct 9, 2005 · It took me about four hours of total work time to install the valvebody. It feels as if I have a manual transmission and I'm holding the clutch halfway out. Plugged it over the weekend, still won't shift into 3rd. By you putting the shifter in manual 2 Jul 19, 2023 · Diagnosing Transmission Problems. Once it has cooled it'll engage and pull again. However, if your vehicle fails to engage after a minute, it’s highly likely it’s not going to and the transmission is in serious condition. Jul 8, 2004 · Not sure exactly what this "unsticks", but I had a TH400 that after rebuild wouldn't go into 3rd gear a couple of times. By 20-25 mph its already in third gear. Someone told me there is something about the b&m that breaks parts in a th400. Sounds like a pump gear or pump drive neck or input shaft/converter spline stripped problem since you didn't find any obvious red flag in the pan/manual valve. 3L Power Stroke Diesel - Transmission slow to engage. The trans shifts fine and works but i get no compression braking in 2nd gear. I was also looking at a potential PTO Clutch problem for my 1999 18hp Simplicity Broadmoor. Just weed out the ones that don't seem credible. It is very slow to go into gear, say from Park to Drive or from Reverse to Drive. It's barely coming out. It had a delay in catching first gear. Jul 9, 2020 · Ive made about 15 or 16 1/4 mile runs and maybe 20 street miles on this 400 I put together. When it warms up it is fine. No wavy. Next day worked for several hours fine. i allready pulled it once to make sure that the torque converter was on right but still nothing. 520 BBC 6. It will do the same getting up to highway speed,with more throttle,but not nearly as bad. New tube fit much tighter on the tranny end, problem solved. Now symptoms. I started noticing it would take 2500-3000 rpm or more for it to move in reverse and first when cold/right after startup only, and works fine after a min or 2 of idle time. After a couple hours forward and reverse became sluggish again until it just wont engage. Dec 3, 2005 · Ive got a 1974 k20 with a 350 in it and i put a stock th400 203 combo it it from a 1979 gmc. When I put it in drive it hesitates to go into gear and when it does shift, it's fine. I have tried to adjust the vac. I haven't gotten underneath and checked the linkage yet, but barring that, what kind of a job am I looking at? Also if it is an internal problem what's it cost to remove/rebuild/replace a TH400? (gonna break it to the wife slowly) May 29, 2012 · TH400. Two "upgrades" during build: Dual feed direct clutch: Removed seal between two chambers. I feel the transmission going through the gears. k. Jun 26, 2006 · So now that my motor problems are more or less resolved, I'm getting to the trans. Wheeled this way until this weekend at windrock. It was overhauled (TCI)and shift-kitted before I installed it in the car. This individual that is helping me used to work at the GM transmission plant at Willow Run in Michigan. With age comes hard or cracked seals, both internal and external, varnishing that causes parts to stick, internal and external leakage, and a host of other problems. From then on it functions normally. Oct 27, 2023 · The problems were all my own fault: I already had a deep pan on the truck, and I was taking the advice of the factory service manual for a 1981 (this is a 1978 if that matters) with a shallow pan. Transmission has maybe 2000 miles on a 'performance' rebuild by a reputable builder in Columbus, Ohio. Band diameters must not be held to the tolerances they used to. Only a guess though. Create New Topic. Drove it, parked it, started it up the next day and it won't engage in ANY gear. Everything seems fine but when i put it in reverse then back into park it seems to want to still go in reverse. The only way to correct age related issues such slipping, shift concerns, or other function issues is a complete teardown, inspection, reseal and rebuild. Feb 2, 2005 · It is easily reversed, I had the same problem when I first installed at th400 in my car,park in the driveway,put in park and the car would click,click,click while it was rolling backwards. Feb 28, 2022 · Lol, I'm prepared for bad news. I would estimate this delay to last 1. . it also does not want to engage the parking pawl. " Jul 19, 2023 · Diagnosing Transmission Problems. May 4, 2015 · Thanks to anyone who can help. Very strange and completely different from my previous R/T. It seems to take a second or 2 to engage, sometimes the wife will hit the gas and it will just rev for a second then engage. Progress has been slow, due to work, coordinating with a gentleman whom I was referred to by a transmission shop and waiting for parts. 7/TH400/floor-shift-TC(NP241?). Less than 200 miles on it. 060 hole drilled for release. I got a fluid and filter change and that fixed it. Oct 20, 2011 · New build turbo 400 with Hispster t-brake RMVB behind approx. even if reverse grabs without using the trans brake I highly recommend u not to do that. Make sure that you don’t rev the engine harder to get the automatic transmission to engage. Dec 19, 2014 · I have a turbo 400, behind and LS7 ZO6 motor, in my 1932 truck. It almost seems like it's trying to engage 2 gears at once. Oct 27, 2010 · All of a sudden my transmission starts to slip within a couple of minutes of cranking up the motor. I reluctantly replaced the gearbox and out of interest stripped it down. The gearbox doesn’t shift down on a hill climb either. And while on the dyno tuning it. Oct 1, 2009 · Hey all. I think this is normal with most transbrake or manual VB equipped Turbo 400's. Got a turbo 400, with a Transgo shift kit, and just finished up tuning on the governor re-calibration kit. Thing is on the street if you pull it to manual lo the car jerks Jan 4, 2006 · low vaccuum at idle causes harsh engages into reverse and drive because of high line pressure. May 24, 2008 · 1968 300 deluxe 15. If fluid comes out, the modulator is no good Nov 5, 2003 · I researched the archives and I learned a tremendous amount about GM transmissions (this is a GREAT forum!) but I still need some specific help on my shift problem. 5" nitrous converter (approx 3800). Just bought a 72 AMC Jeep J2000 4x4 with a 360 and a TH400 transmission. I read later that a lot of after market filtrs were polyester or something and prone to stopping up. yet reverse feels just like 1st gear, 825 idle speed but no slamming into gear. First thing was slow to engage reverse. It’s not going to make any difference. Aug 13, 2002 · Still working out some of the bugs on my jeepster, one problem is that the tranny doesn't hold in park. It was fine for the next 9 years I drove it. Jan 3, 2008 · transmission - slow 1-2 shift on th400 - anyone else run into this? got a tci full manual reverse valve body. I pickup this trans about three years ago from a Calf trans rebuilder with good reputation. 50's with three gears. Sep 9, 2022 · 2022 Ram 3500 SRW 4x4 68RFE, 200 miles. May 19, 2008 · So I thought i'd throw my problem out for some help. RPM's have to come up quite a bit to make it move. Here is the situation: I engage the winch, I engage the pto, then i pull the tranny into reverse, this lets the winch out. At part throttle/slow cruise and going uphill slow it gear hunts 1-2,it does it slowly,not harsh,feels almost like it's slipping out of gear. in Pan and 4-5qts. It could be up to 5 or 6 seconds before it will backup. allso i dont think any of Nov 19, 2015 · What it has been doing for a while but is slowly getting worse is it has a delay on the 1 2 shift. I believe . 10@118mph 9-30-22 Nov 13, 2005 · Hi everybody ,my TH 400 started to act weird , MVB with trans brake , have very slow reverse engagement or no reverse at times at all , this will happen with trans shifted into reverse or in neutral with trans brake switch applied ,same thing ! In the morning when fluid is cold I may Oct 9, 2010 · Slow to engage reverse Jump to Latest 6. Slow to engage forward but no problems with reverse. 010-. When I start it up completely cold, it seems to work fine- forward and or reverse - for a shirt while. Sep 28, 2009 · If all air checks good, you may have a too short servo pin. assuming the transmission is slipping, that is, you rev up the engine and it kind of tries to move the car but can't. same scenerio every time when warmstuck valves won't give you that scenerio on a''you know it's coming'' basis. Asked a transmission builder friend about it, he suggested when it's doing that, go through all forward gears MANY times, and eventually it did work, and the problem never returned. I'll try to be more descriptive. 84 mph "Just about the stupidest thing you could do, is to try and move a big block with your shoes untied. Mediun/heavy throttle, the 2-3 shift was absolutely terrible after pulling a 9k load one day. Tuesday, July 29, 2014 Transbrake solenoid tips and troubleshooting Racing transmission transbrakes rely on tightly wound Feb 10, 2016 · depending on the valve body u sometimes need to use the trans brake in order to engage reverse. Nov 26, 2012 · We had a delay in R or D with our turbo 400. themechanical modulator is the easiest solution or custom calibration which requires Apr 1, 2006 · I have a 1 ton 4x4 with a th400, np205, and a pto winch. I recently changed cams. 9. I've noticed the transmission seems slow to engage when it's been sitting for several hours. In manual low it provides engine braking on decel, and this is why I asked about engine braking in manual low. I just don't like making a turn, and then taking off in 3rd at 15 MPH. 9 @ 88. Various tips/methods in tracking down the problem. Jul 6, 2006 · Allright guys,the level is o. 2-3 shift is perfect and instant. However the mechanical leverage of the servo pulls the parts off center and causes power loss. - Recently bought my truck and the problem has been there since I bought it. got car up to temp and trans was 160 on the TH400 Components; Connect; Menu News. I can't even tell how many gears it goes through by the time I have to turn around at the end of my street. 52 @ 101. It will finally shift back into 2nd below 15 MPH or so. 0 mph 1968 mailbu (383,th400,12bolt/posi) 13. I dropped the pan,reversed the parking pawl and its been good ever since. Naturally it always acts up when there is snow on the ground that needs to be plowed, sometimes I think the truck is lazier than I am! Here's one of my issues: I start the engine, and put it in gear - the TH400 doesn't engage at all, until I've shifted, forward - reverse - Jun 27, 2006 · Th400 1st Gear Problems Jump to Latest 11K views 10 replies 3 participants last post by vader2 Jun 30, 2006 Apr 14, 2011 · The Turbo 400 has a modulator on the passenger's side of the transmission pointing towards the passenger's door. RND OIL can be used to apply the band in lo and dump at the manual valve on the 1-2 upshift. Once it cools down Aug 21, 2007 · I know it is a different trans, but I had a 73 Covette with a turbo 400. Checked the linkage, and it's fine. Aug 29, 2006 · Yes, I had the same problem on a 10y Beta 20hp with 640h on it. Delayed engagement is a minor inconvenience but if not addressed, it can lead to bigger, costlier problems. all new components inside tranny,red eagle clutches and kolene steels, good sprags. ive tried adjusting the detent rod and still the same result. Delayed engagement is certainly a problem, but if you’re not careful it can lead to larger problems. In D, it will shift like a normal trans, quicker than 2-3 but still smooth even when i am on it. reason being u aren't getting full line pressure to engage the clutch pack properly. I have turbo 400 transmission that shifts way too early in drive. Jul 12, 2007 · But with low oil pressure, the TH400 can head south very quickly if that is your problem, would be very careful driving it until you find the problem. All forward gears were 100% fine. i shift at 6200 rpm,but when i bang into 2nd the motor will climb another 2-400 rpm before tranny shifts. These are the most likely problems, but it could be something else too. Is Feb 28, 2022 · Lol, I'm prepared for bad news. Once it's warmed up all is good. 1K views 6 replies 2 participants last post by Nathan08T Oct 10, 2010 Oct 17, 2011 · what i don't get why 3rd gear is the only problem,no fluid pressure to engage the clutches,like its bleeding it out somewhere i could be explaining it wrong and the book he has is not where the coin info came from. With the engine running the fluid level should be even with the Pan mounting surface. Stock TH400 = 6qts. Trans fluid up to snuff Any ideas?? Apr 30, 2015 · In my F100, when I step on the gas, it F#@&ING GOES. 050 to . Jun 7, 2006 · Hey, just stumbled upon the forum via Google. This has become an issue on the TH400's and 4L80E's in recent years IMO. I have a slow trans fluid leak that according to my research, appears to be coming from either the front pump or the converter seal. A common problem for powerglide racing transmissions equipped with transbrake valve bodies is any kind of movement when the transbrake is activated and the car is staged. Mar 25, 2011 · You need to get the Dipstick problem straightened out. It may be overfilled, if the Converter was close to full & you added 10qts. Almost seems like tc is draining down and needs to be "pumped up" before it will take off. Many, many times even at 15 to 18 MPH, I'm still in 3rd. vciq xhys rka jzdm zvml jswez enplt fprw hhxzhb jjfk zrupovzl ccne bknj urifp udbhm