2nd on the exhaust leak, also check cabin air intake. - Saab 9000 Bulletin Board - Saabnet.com
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2nd on the exhaust leak, also check cabin air intake.
Posted by Noel (more from Noel) on Mon, 19 Dec 2005 10:50:10
In Reply to: Re: best way to describe is sounds like helicopter..., Abusot, Mon, 19 Dec 2005 08:45:34
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check around your cat. I had a little crack where the mounting boss for the hanger connected to the cat and it was hard to hear unless I was in just the right place. You might also have a broken exhaust mount, like the one from the cat to the engine block. An exhaust system hanging loose can make all kinds of weird noises that can also be rpm sensitive.
The other thought is you have some debris in the cabin air intake system. Changed the filter lately? Stuff *can* get by the filter and get lodged in the ducting, and if it is flapping could have a helicopter sound. And you'd most notice that from inside the car.
posted by 69.163.38...
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