YOUR RESEARCH996 engine noise - 'chirping' under load
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Hi, New to all this folks, and would appreciate if anyone has any ideas why my 996 would start making a 'chirping' noise (no bird jokes please!). Its a '98 996 non-turbo, with 77k, and started making the noise last week, only when warmed up, and only when under load between 1100 - 2100rpm. Steadily became worse and is now audible when idling with the engine cold. Noise is coming from the engine / exhaust area, Cheers, Andrew
poly belt?
Cheers, - You think it best to replace it?
Polybelt could be slipping although this is usually heard more when cold rather than warm. Or could be a failing waterpump ?
Had a strange chirping / turbo type noise on my old mk1 mx5, turned out to be a small hole in the exhaust at a joint where the gasket was failing.. really simple fi once i'd located it. It gradually got worse until i worked out what it was and where it was coming from !!
My car has just gone to OPC Byfleet as I heard the same noise in the cockpit. On mine they have diagnosed a problem with the power steering pump as making the noise.
possible "pinking"- incorrect ignition timing/advance or incorrect grade of fuel? When you drive the car and press the accelerator does the noise become more pronounced?
Yes, it definitely sounds worse when the accelerator is pressed
Could be a loose spark plug. More common than you would think, and it makes the chirping sound you describe.
Bingo Richard!! tfft - thought I was going to have to sell the wife, but it was just a loose plug. I'll keep her till it needs a major service!
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