Did you solve the problem? Find the hum? - Saab 900 Bulletin Board - Saabnet.com
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Did you solve the problem? Find the hum?
Posted by MS (more from MS) on Thu, 7 Apr 2005 11:42:57
In Reply to: High pitched hum from under hood??, kyle morley, Tue, 5 Apr 2005 11:42:31
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Based on other responses, I'm thinking a gasket or seal rupture where air is being sucked into the manifold. Say your intake minifold bolts are loose along one side, that can cause the gasket to fail and air to be drawn past it. Also, I've seen one of my vacuum hoses soften and become flat whenever vacuum was strongest, like while idling. It causes a distinct tonal vibration.
posted by 207.200.116...
Posts in this Thread:
- High pitched hum from under hood??, kyle morley, Tue, 5 Apr 2005 11:42:31
- Did you solve the problem? Find the hum?, MS, Thu, 7 Apr 2005 11:42:57 <-- Viewing This Message
- Re: High pitched hum from under hood?? ideas, JohnK, Wed, 6 Apr 2005 07:45:16
- Possible failing AIC ? n/m, BobD, Tue, 5 Apr 2005 19:38:12
- Come on you sharp dudes! Somegone must know!, kyle morley, Tue, 5 Apr 2005 18:29:02
- Re: High pitched hum from under hood??, Bill N, Tue, 5 Apr 2005 11:48:39
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