Mechanics

GRINDING / RUBBING NOISE WITH VIBRATI

1980 Pontiac Trans Am

Noises problem
1980 Pontiac Trans Am V8 Two Wheel Drive Automatic 80000 miles

i own a 1980 pontiac trans am with a chevy 350 5.7 ltr. V8 engine and a TH 350 transmission in it. All parts are brand new and have about 3000 miles on them in the 4 months ive owned the car. My question is whenever I let off the gas to begin a coast beginning at 25mph a grinding / rubbing noise occurs and gets progressivly louder the faster I coast. But whenever I decide to give it even the slightest bit of gas during the coast the noises stop. However getting up to 55mph I get very bad vibrations on the drivers side. This all started occurring a week ago with no changes made to the parts in the car or the car itself. Any ideas? Im stumped.
Avatar
Learnthehardway33
August 22, 2010.



Check out the related content below while we wait for the question to be answered by a professional mechanic.