italia29

Hey, Over the last few months my 88 4+3 tranny vette has begun to rattle same times even at idle in a stopped position. I put it on my hoist last night but i couldnt find any loose parts. i can hear and feel it when i sit in the car and it comes and goes. Has anyone ever experienced this befor and if so what was the fix.

thanks

89 Bob L

Check your heat shields on the exhausts: exhaust manifolds, exhaust pipes, and cat. Many times the heat shields corrode near the welds and cause the problem.

pologreen1

my stock exhaust was horrible. When I test drove the car I thought it was in the drive train, he assured me his mechanic told him it was the exhaust. I regretted buying it the first time I took it for a ride, and thought about it, then I realized it was only at certain rpms, I put on straights, and there are no problems at all.

pletzvet

check your catalytic converters - sometimes they break up inside and the pieces rattle making it sound like it is coming from the drive train. It happened in my '85.

WW7

Your lucky, My car even makes rattling sounds when the motor is turned off..:WW

dclafleur

+1 for heat shields on exhaust, mine sounds like a penny in a beer can over bumps. One of these days when I'm feeling ambitious I'll take care of it....