Drivetrain rattle - ZR-1 Net Registry Forums

crazyb1 · 12-15-2006

I started my Z and immediately got a rattle that sounds similar to an A/C bearing going out. I turned A/C off and rattle remained. I listened from under the car and the noise is louder there (like it's coming from the headers). Pushing in the clutch changes the pitch of the rattle very slightly. The engine doesn't seem down on hp. and runs as smoothly as before. When increasing rpm, it doesn't seem (I may be wrong) that the rattle increases in pitch, volume, etc. I've thought about the alternator, A/C, and now the ZF as the culprit. 50K miles. Any ideas?

12-15-2006	#1
crazyb1 Join Date: Jul 2005 Location: Star, Idaho Posts: 56	Drivetrain rattle I started my Z and immediately got a rattle that sounds similar to an A/C bearing going out. I turned A/C off and rattle remained. I listened from under the car and the noise is louder there (like it's coming from the headers). Pushing in the clutch changes the pitch of the rattle very slightly. The engine doesn't seem down on hp. and runs as smoothly as before. When increasing rpm, it doesn't seem (I may be wrong) that the rattle increases in pitch, volume, etc. I've thought about the alternator, A/C, and now the ZF as the culprit. 50K miles. Any ideas? __________________ '90 ZR-1 Red/Red #1239 SGC P/P Plenum/IH, Headers, B & B, Hurst, K & N "Red RocketShip!"

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