Date: Mon, 06 Aug 2001 21:16:16 GMT From: Clark Magnuson <cmagnusonnopsam.com> Subject: vacuum brakes hiss, idle is high?
I have an 89 Saab 900 that is idling at 3000 rpm until warm, and then when warm, idles too low. I replaced the distributor and rotor. That made it quit missfiring. When I turn the engine off, for 10 seconds a hiss comes out of the brakes master cylinder area. The connection between the vacuum hose from the intake manifold and the vacuum assist brakes diaphragm housing is where the hissing is coming from. I covered the connection in duck tape, and the idle is still high and the brakes still hiss for 10 seconds after engine shut down. TIA Clark
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