LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LT1 vibrating and hesitation

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Old 12-29-2008, 06:56 AM
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Location: Pottsville, Pa. 17901
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LT1 vibrating and hesitation

Hello all, I have a situation with my 95Z. A few weeks ago in Penn. we got a ice storm and temps at night got down below zero. I didn't drive it at all for a few days.

As of last Wednesday, the car vibrates loudly and can be felt through the shifter while drving and especially above 2500 RPM's til about 4,000 when it gets a little quieter.

Also occurs during 6th gear cruise where it doesn't go abouve 55 and the car vibrates really loud. Also during acceleration it doesn't seem as smooth, liek it is being held back or restricted.


Thanks for taking the time to read.
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Old 12-30-2008, 04:43 AM
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Sounds like you have a cylinder out.
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Old 12-30-2008, 01:48 PM
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My mechanic looked at it. He found the exhasut flange is rotted off from behind the cat to wheer the Borla intermediate pipe connects.

So now it is a issue of trying to find a exhaust flange that is 3.25" and also put Borla's warranty to the test.
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