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Old 09-08-2014, 06:05 PM   #1
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Rotational chirp, not belt related??

So, I'm hoping this is a known issue with Boxsters. I bought mine with a chirping sound that I swore would have been the throw out bearing. I changed it, along with the clutch, pilot bearing, and the IMS as long as I was there. The IMS with 100K was still perfect... Anyway, I ruled out belt / pulley noises by disconnecting the belt and running the engine, the noise is still there. The car is quiet on a cold start up, the noise will start coming on after about 5-10 minutes running. The noise will also go away at around 1500-1800RPM. It is primarily there at idle. Does anyone have any thoughts as to which direction to go to figure this out?
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Old 09-08-2014, 07:39 PM   #2
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Loose spark plug? It's a fairly common problem that often gets overlooked. Also possibly a worn timing chain guide can cause a chirp.
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Old 09-09-2014, 12:51 PM   #3
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Thanks for the tips. I'm back at it tonight with a stethoscope to see if I can at least locate the area the sound is coming from.....
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Old 09-09-2014, 02:25 PM   #4
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I am just going to ask, you did check for a ..............






Good Luck
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Old 09-09-2014, 02:29 PM   #5
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Thanks, first thing about this that made me laugh
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Old 09-09-2014, 03:31 PM   #6
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I'd second the spark plugs. If they haven't been changed in a while might be good to do them. Not a bad job with the proper tools.
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Old 09-10-2014, 04:43 PM   #7
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spark plugs for me too, had the same fault, found 5 of the 6 plugs lose
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Old 09-10-2014, 04:51 PM   #8
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spark plugs for me too, had the same fault, found 5 of the 6 plugs lose
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