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I have found this car to be able to make so many weird noises from the strangest things. Worn motor mount makes strange noises around 3,000 rpm. Loose spark plugs have been known to make chirping like sounds under load. Exhaust leaks and or loose heat shields are definitely another source of many strange noises. It could even be something like a pulley, water pump, power steering pump or alternator. A sound clip would probably helpful for us to try and diagnose.
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1998 Porsche 986
Threaded Mode
