Hissing/whining noise?
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Joined: Aug 2001
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From: St Louis
Hissing/whining noise?
When I started my car (89 Formula-350 TPI) last night, there was a whistling/whining noise during idle. It seems to get a little louder as I accelerate but sometimes seems to go away when at constant RPM? What could this be? Is it safe to drive like this? Thanks a lot!
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Joined: Mar 2003
Posts: 1,301
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From: Severn, MD.
Car: '88 T/A and '90 T/A
Engine: LB9/383
Transmission: T5/700R4
if it's a whining, look at the alternator. Could be a bearing going bad in any of the accessories. A hissing would most likely be a vacuum leak. Good luck sealing it if it's tuned port. 
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Joined: May 2003
Posts: 201
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From: Michigan
Car: 1988 iroc-z baby! :o)
Engine: 305
Transmission: soon 2 be replaced.
i'd check the alternator...mine was whining, i figured it was just the belt and i could let it go for a few days till i got paid....on the way to get my check, my alternator froze up.
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sjorgens
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