There is a BIRD in my engine!

[Jefe]

Has anyone experienced a "chirping" coming from the engine while cold and accelerating through low RPM ranges? Can not hear it at idle or any constant RPM. It only happens as the engine is revving up slowly. When I accelerate quickly it can't be heard, probably because my exhaust system is masking it. I mainly hear it in the mornings as I go through the gears and it happens at about 12 to 1800 RPM. It only last a split second and after the engine temp gets to 170 and above or the RPM is above 1800, I can not hear it at all. Any help would be appreciated.

Cheers,

Jefe

 

[DRTH VTR]

I have a '97 A4 with 70,000 miles that has made some noises like you describe. In both cases, I had to have a belt tensioner and drive belt replaced. Perhaps that is your problem, too.

 

[99WhiteC5Coupe]

Jefe,

I had the same problem with my 1999 C5 coupe (purchased new). Replacement of the idler pulley (below the alternator) with a revised/updated part eliminated the chirp.

Refer to: http://corvetteactioncenter.com/kb/question.php?qstId=258

Good luck.