BIG problem
Thread Starter
Teching In
Joined: Feb 2007
Posts: 36
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From: Hell (The locals call it Utah)
BIG problem I was on the highway and went to downshift (Got an LS1 M6). The second I released the clutch I heard this snapping noise - and now whenever I give it any gas, in any gear, I get this absolutely horrible, LOUD blender/jackhammering noise.
The car still accelerates despite the horrific noise, I was able to get it the three miles to home. The M6 has 130k miles on it with some replaced parts, so it's definetly not in tip-top shape.
Can anyone tell what's wrong?
The car still accelerates despite the horrific noise, I was able to get it the three miles to home. The M6 has 130k miles on it with some replaced parts, so it's definetly not in tip-top shape.
Can anyone tell what's wrong?
Gotta do some investigating. Get the rear up on jack stands and spin things by hand. See if you can pin point the noise.
Sounds like you grenaded your rear tho. Probably have a few teeth circulating in the diff causing the noise/racket. If you can hear it while the rear is off the ground, and it sounds like its coming from the back of the car, go ahead and pop the rear cover and see how bad it is...
Does the trans seem like it still shifts ok?
Justin
Sounds like you grenaded your rear tho. Probably have a few teeth circulating in the diff causing the noise/racket. If you can hear it while the rear is off the ground, and it sounds like its coming from the back of the car, go ahead and pop the rear cover and see how bad it is...
Does the trans seem like it still shifts ok?
Justin
Is the sound coming from under you or the back of the car??
If its coming from under you.....it could be that your clutch disk seperated. I had this happen to me. The grooved hub part of the disk that the input shaft of the tranny goes into seperated from the rest of the disk causing the same horrible sound. I was able to drive the car a few miles and the sound was always there but would get 10x worse if I went above 3000 rpms. It was also difficult to shift since the disk was broke like it was.
If its coming from under you.....it could be that your clutch disk seperated. I had this happen to me. The grooved hub part of the disk that the input shaft of the tranny goes into seperated from the rest of the disk causing the same horrible sound. I was able to drive the car a few miles and the sound was always there but would get 10x worse if I went above 3000 rpms. It was also difficult to shift since the disk was broke like it was.
Put it up & get under the car. If you see nothing obviously loose you need to pin point it to an area. It is likely the clutch, the disc can have a broken hub & make terrible noises.
Otherwise like said above you can have a diff or internal however unlikely trans issue.
Otherwise like said above you can have a diff or internal however unlikely trans issue.
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Thread Starter
Teching In
Joined: Feb 2007
Posts: 36
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From: Hell (The locals call it Utah)
Ahh hell...
bww3588 was right, that is if you meant the driveshaft. It completely busted today and blendered the underside of my car - I was trying to slow roll to a tranny shop.
That explains the grinding and such - the U-joint must have been damaged, but not fully separated until now.
Erg. Oh well...transmission costs more anyway. =/
bww3588 was right, that is if you meant the driveshaft. It completely busted today and blendered the underside of my car - I was trying to slow roll to a tranny shop.
That explains the grinding and such - the U-joint must have been damaged, but not fully separated until now.
Erg. Oh well...transmission costs more anyway. =/
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Verdad Gallardo u joints arent bad to change at all. takes a little persuasion but they will come. make sure you tape the bearing caps on untill your ready to hook it up or they will come off and all the little needles inside will go flying.
Thread Starter
Teching In
Joined: Feb 2007
Posts: 36
Likes: 0
From: Hell (The locals call it Utah)
Originally Posted by bww3588
u joints arent bad to change at all. takes a little persuasion but they will come. make sure you tape the bearing caps on untill your ready to hook it up or they will come off and all the little needles inside will go flying.
Ok now that you figured out what it is... how the heck did the driveshaft let go like that from downshifting? Whats all done to your car?
Im running an alum driveshaft right now. I figured it was stock, but it has a "Three Rivers" sticker on it. So it might be aftermarket. But thats my weak link right now since my t-56 is built, and I have a strange 12-bolt...
Justin
Im running an alum driveshaft right now. I figured it was stock, but it has a "Three Rivers" sticker on it. So it might be aftermarket. But thats my weak link right now since my t-56 is built, and I have a strange 12-bolt...
Justin
Originally Posted by ghettocruiser
Ok now that you figured out what it is... how the heck did the driveshaft let go like that from downshifting? Whats all done to your car?
Originally Posted by ghettocruiser
Im running an alum driveshaft right now. I figured it was stock, but it has a "Three Rivers" sticker on it. So it might be aftermarket. But thats my weak link right now since my t-56 is built, and I have a strange 12-bolt...
Justin
Justin
Cool thanks for that info... Didnt know that about Three Rivers.
And pyro youre right...a new driveshaft is a blessing as opposed to having to replace the trans or rear.
J.
And pyro youre right...a new driveshaft is a blessing as opposed to having to replace the trans or rear.
J.
Originally Posted by Shamson5.7
Definately sounds like the rearend. My dad could hear it 5 blocks away when mine went kaput.
Originally Posted by brad8266
You must have missed the last few posts, lol.
Sure did. I stumbled on this thread while browsing for clutch info...didnt bother to read everyones posts.
You still need to check the rest of the drive line out, since that much damage to the drive shaft COULD have put additional stresses on the rear end or the tailshaft of the transmission.