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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: moneyg77 on January 04, 2015, 06:38:51 pm
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I hearing/feeling something bad coming from the tranny when i come to a stop and its gradually getting worse. It feels like my clutch is about to fall out!! I dont know much at all about tranny's so any help would be greatly appreciated.
I have an 81 k10 with 350/muncie 4 spd.
Thanks in advance
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If it's noise when you push in the clutch, it could be a bad throwout bearing.
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There aren't any noises when the clutch is pushed in, only when coming to a stop..
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Coming to a stop with your foot on the clutch or off? Can you get a video of it?
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Its while coming to a stop with my foot on the clutch. I'll see if i can get a video and load it as soon as possible.
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Okay, so i was finally able to add a short 10 second video on youtube so that you guys can kind of hear whats going on. I hope its enough, If not then ill add another. Disregard the squeaking brakes and bad interior lol my focus is on the mechanics for now.
I tried stopping with it in gear and not in gear. It feels like once i get slow enough something locks into place, causing the abrupt stop. It alsosometimes pops into gear when i come off the clutch and push on the gas.
This is the link https://www.youtube.com/watch?v=UH0pEq4PPyU&feature=youtu.be
Thanks
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Check your u-joints first, and foremost.
Eliminate those before suspecting the clutch.
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I know for sure the front u joint is fine, it was just recently changed out. I even disconnected the front driveshaft to be sure. Any other suggestions?
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I guess i have a real stomper huh?
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sometimes you have to give us a day or two to get back on. but i cant watch the video for now(firewall), but does it do it when you coming to a stop and take the trans out of gear?
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Copy that.
It does it with the transmission in gear and out, but not as I take it out of gear if that makes sense.
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try to take it out of gear by the t case when your stopping. then see if it make the noise anyway you can with the t case in neutral
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I took it out for another drive and noticed that every time I let of the gas I hear a grinding noise, hope that helps.
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I really couldn't tell what noise to listen to in the video. Are the axles ok? Pinion nuts?
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It is starting to sound more like a countershaft bearing in your transmission. Or as Capt said a bad pinion bearing.
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if you shift the t case in neutral it will isolate the rear from the trans. if it still does it then i would think its in the rear or a bearing
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Sorry for the late reply guys.
I tried shifting to neutral in the t case and couldnt move..am i supposed to be able to?
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while your slowing down drop it in neutral
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while your slowing down drop it in neutral
I tried and it wouldnt let me
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you should be moving already
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Alright, i did what you guys recommended (again) by trying to put the transfer case into neutral while moving, stopping, slow roll, etc.. and nothing except for more noise. It seemed that every time i tried to put it in neutral, it would amplify the sound even more.. i have no clue where to go from here.
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my thinking would be either rear or t case. if you can hook the front shaft up and remove the rear and try it again and see what it does.
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Have you check / inspected the fluid in all the drive train?
I would check for correct level. (Top off any that are low with the correct oil). Then get some of the oil between your fingers, see if there is metal shavings, or if it looks like metallic paint.
If you find metal you can isolate the component thats having the issue.
I would also inspect the front axle joints for dryness, or binding.
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my thinking would be either rear or t case. if you can hook the front shaft up and remove the rear and try it again and see what it does.
Ok, Ill do that this week. Probably tues since im working all weekend. But I don't think ill be able to test it that way because when I went to go get the rear end and front end diagnosed the lead mechanic told me that when the front end was rebuilt whoever did it didn't assemble the locker correctly which is why it grinds to a stop after a few feet. smh..this truck is turning into a bunch of hiccups..i paid a decent amount getting the front end rebuilt by a 'reputable' mechanic in clovis, nm.
Have you check / inspected the fluid in all the drive train?
I would check for correct level. (Top off any that are low with the correct oil). Then get some of the oil between your fingers, see if there is metal shavings, or if it looks like metallic paint.
If you find metal you can isolate the component thats having the issue.
I would also inspect the front axle joints for dryness, or binding.
Tuesday after I attempt to follow the directions from Irish_Alley i'm going to be changing the rear gear oil. Hopefully I do find something so I can fix something!! So far I cant find anything to fix but things are broken.
My wife is already pissed (I know, welcome to the club right?) With my newborn son my wife gave me the ultimatum to sell the truck because I have too many projects..so I just need to get it close to perfect, or at least know everything that needs fixin so I can price it fairly, and the new owner will be confident with the purchase. But If I get everything tip top hopefully she'll just let me keep it.
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luckly my wife understands i need something to keep me happy besides the family. i love our trucks and she is getting to like the crew cab cause of the space it has and being able to fit the family in one vehicle and still have room for other stuff. but i have a 79 k20, 84 k30, 86 k20, 91 v3500 and a 94 c1500 (her first vehicle) along with my 04 impala ss. only one of my fleet can't see the road but she doesnt mind cause if she ever looses me she knows ill be somewhere working on one of my trucks. and it will give me and my kids something to work on. the only part she doesnt understand is why the 91 has to have a cummins in it lol
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Look what I found :(
(http://tapatalk.imageshack.com/v2/15/01/21/3aeaedb3cf17446879a8c521d4c4f2bd.jpg)
(http://tapatalk.imageshack.com/v2/15/01/21/f3b4d928f6ba8ccf80dec74aa763daf3.jpg)
(http://tapatalk.imageshack.com/v2/15/01/21/f3db47219e621840217b47d4afdcbd0e.jpg)
(http://tapatalk.imageshack.com/v2/15/01/21/58406c531056acd1ee812b0fc4c3fee4.jpg)
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You might have your pinion set a little bit too deep.......
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Thats what i was thinking and have no clue how to fix it. But is that whats causing all of my other issues? When draining the oil i didnt find any chunks of metal, only shavings.
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Uh that is definitely what is causing your noise if it never goes away until you stop...
You can't "fix" that. I would replace that gearset and diff, or get a new rearend with gears that match your front axle.
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I went and got the tranny, front/rear end and transfer case checked out at aamco transmissions. The mechanic told me:
1. The entire rear end needs to be rebuilt because of the misplaced pinion causing a lot of damage.
2. They found metal in the tcase and someone put gear oil in the tcase and transmission instead of transmission fluid.
3. The chain is slipping inside of the tcase which may causing the "pop" when I stop and not allowing me to put it in 4H or N when slowly moving
4. So far nothing is wrong with the front except for a leaking diff cover/pinion seal.
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Any comments?
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Number 1 is 100% true. The others we don't know sounds plausible but since I know the rear is bad I wouldn't work on the engine or t case till I fix the problem that we know of
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I thought that was the answers you got. If the person inspecting it was reputable I would assume he gave an honest evaluation.
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I i've been doing A LOT of thinking and i do remember the pinion nut falling out when i drove over a speed bump when i first bought the truck...so this must be the cause, much less directly, related to the current condition of the rear end smh. Correct me if im wrong.
Now remember, this subject of drivetrain is Greek to me so dont make fun of me too much lol :-\
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i do remember the pinion nut falling out when i drove over a speed bump when i first bought the truck...so this must be the cause, much less directly, related to the current condition of the rear end smh. Correct me if im wrong.
I think that you determined the root cause. To me, the pinion nut falling off is the cause and is directly related to the rear axle problem. The nut didn't retain the pinion which resulted in it moving back into the carrier.
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OK, finally an update. I found a replacement transmission and transfer case since I was quoted $3000 for a rebuild.
They were $300 and came with a brand new clutch kit, clutch fork, and flywheel.
I know they are in good condition because we drove the truck they were in before we pulled them out.
(http://tapatalk.imageshack.com/v2/15/02/24/f94ed89126d814faae525fcb5802c550.jpg)
(http://tapatalk.imageshack.com/v2/15/02/24/06fa141f1a1564bc92d0d95feebf1896.jpg)
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Wow that's a good deal.
I read the first few posts in this thread and was like "No! It's a loose pinion!" but it looks like I was too late
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Manny,
Whats funny about the whole situation is that I was having problems with the rear brakes locking up....or so I thought. I remembered, wait too late I must say, that there were no brakes connected to the rear end. So that should've been a give away..not that it could've prevented anything, but I would have been able to determine the cause much earlier than I did.
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Anyone know how to install a 465muncie 4 speed and 208 transfer case or where I can find the steps to do so?
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As in how to assemble it and put it in the truck? Did you get all the parts? If so just put it all back together. Tcase on trans, trans on crossmember, flywheel on engine, clutch assem on flywheel, lift the trans assem up and line it up with the pilot....