Pontiac G6 Forum - View Single Post - Hissing / Whistling noise when foot on gas
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post #13 of (permalink) Old 02-05-2010, 06:37 AM
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datacat's Avatar
Join Date: Feb 2009
Location: Canada
Posts: 237
I realize it's an old topic but luckily it came up in a search.

I am now experiencing this wonderful hissing/whistle noise. It only happens going from stop > start up to 1500rpm. As soon as I go over 1500 it stops and it is very faint. Some days a little louder than others but it's never constant.

I have been researching and I heard it could be the tensioner pulley or even PCV valve. I've had a listen and it doesn't sound like the PCV valve or pulley. It sounds more like it's coming from under the engine...

I just got back from the dealer with a very unhappy impression. Here in Canada it is extremely difficult to find a GM dealer that actually makes an attempt to fix your problem. Most of the time if you let them, you will walk out with everything else fixed but the problem and a empty wallet.

Anyway, can anyone suggest what to do? Ask them to replace the exhaust from the flex pipe? This sounds like a huge expensive job. If it's nothing too serious, I might just wait until it gets worse.

Thanks in advance.

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