Rear end shakes when starting from a stop. What's causing it?
#1
Rear end shakes when starting from a stop. What's causing it?
Background info:
Car is a 2004 with original differential, clutch, etc. Just turned over 40k miles.
It has revshift motor mounts/trans mount insert and short shifter. The rest of the car is stock.
When I begin to pull away from a dead stop, the rear end begins to shake a good amount. Feels almost similar to wheelhop, but not as violent. This is in normal conditions, slow city driving.
If I give the car minimal gas as I let the clutch out, it shakes the worst.
If I give the car more gas and pull from the line a little harder and slip the clutch more, there is minimal or no shaking.
Does the clutch need replacement? Could it be related to the differential bushing? If the diff bushing is completely worn out, would it allow enough movement to cause a low speed harmonic?
I'm not sure what the first step to solving this issue should be, so I'd appreciate any help.
Car is a 2004 with original differential, clutch, etc. Just turned over 40k miles.
It has revshift motor mounts/trans mount insert and short shifter. The rest of the car is stock.
When I begin to pull away from a dead stop, the rear end begins to shake a good amount. Feels almost similar to wheelhop, but not as violent. This is in normal conditions, slow city driving.
If I give the car minimal gas as I let the clutch out, it shakes the worst.
If I give the car more gas and pull from the line a little harder and slip the clutch more, there is minimal or no shaking.
Does the clutch need replacement? Could it be related to the differential bushing? If the diff bushing is completely worn out, would it allow enough movement to cause a low speed harmonic?
I'm not sure what the first step to solving this issue should be, so I'd appreciate any help.
#2
TECH Fanatic
iTrader: (1)
If you're at 40k on the original rear diff bushing that's where I'd put my money first.
Even if it's not shot, all the other mounts being firm might make the 'rubber-banding' of that last bushing more obvious to you now. Fwiw, I have the rear diff bushing and trans insert from revshift and cradle bushings from CS. The clutch 'give' is more apparent to me especially when the car is cold so it could be both.
Even if it's not shot, all the other mounts being firm might make the 'rubber-banding' of that last bushing more obvious to you now. Fwiw, I have the rear diff bushing and trans insert from revshift and cradle bushings from CS. The clutch 'give' is more apparent to me especially when the car is cold so it could be both.
Last edited by isis; 08-13-2014 at 10:00 AM.
#3
If you're at 40k on the original rear diff bushing that's where I'd put my money first.
Even if it's not shot, all the other mounts being firm might make the 'rubber-banding' of that last bushing more obvious to you now. Fwiw, I have the rear diff bushing and trans insert from revshift and cradle bushings from CS. The clutch 'give' is more apparent to me especially when the car is cold so it could be both.
Even if it's not shot, all the other mounts being firm might make the 'rubber-banding' of that last bushing more obvious to you now. Fwiw, I have the rear diff bushing and trans insert from revshift and cradle bushings from CS. The clutch 'give' is more apparent to me especially when the car is cold so it could be both.
I definitely notice it more in the first 15 minutes of my hour commute while the car is cold.
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#8
Guess the consensus is clutch chatter. Thanks guys.
I can drive around it by just bringing the revs up a little more. Hopefully it'll last until winter when the car goes away.
I can drive around it by just bringing the revs up a little more. Hopefully it'll last until winter when the car goes away.
#10