Intake? - Saab 900 Bulletin Board - Saabnet.com
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My guess is that you're getting a resonance in the intake path somewhere. Make sure all your hoses are in good shape, especially any of the large ones, like those that go to the Hooter valve or the charcoal canister. Also check the clamps on the four fat hoses going from the intake plenum to the intake manifold.
See if you can duplicate the sound with the car in neutral and the hood open, by opening the throttle with your hand. Try moving the large air hose that runs to the intake plenum. Don't ignore the area around the air filter - there may even be a crack in the air filter plastic case.
posted by 192.249....
Posts in this Thread:
- engine noise doubles from 3,000 to 3,100rpms only...., Chet, Tue, 3 Dec 2002 11:57:23
- Re: engine noise doubles from 3,000 to 3,100rpms only.., Simon S, Wed, 4 Dec 2002 12:20:17
- Are your engine mounts good? n/m, BobD, Tue, 3 Dec 2002 22:29:42
- Intake?, Ari
, Tue, 3 Dec 2002 19:00:15 <-- Viewing This Message
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