whirring noise driving me nuts - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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whirring noise driving me nuts
Posted by lms (more from lms) on Thu, 19 Apr 2007 15:09:16
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2002 viggen, I have posted this before. 57,000 miles. Car runs great, oil light works fine. sound starts around 12 on the vacuum guage and if I feather the throttle I can hear it cycle up and down. Can't hear at idle or when I rev engine at idle. Sounds like the turbo, but it's not. Why because the turbo is new and the sound was there before. Sounds like it's coming from tranny, but not sure. It sounds like air being moved through a pipe, but not sure where. No cel's. Car is sludge free from what I can tell. Valve cover off and it's frickn spotless. It's not anything connected to serp belt because I took that off and drove car. Not the brake booster because I unhooked that and drove. Installed a new poly tranny mount and now it's even louder. Makes me think its' internal, but it does not sound like a bearing at all.
Anyone......
PS car does not leak oil or water, does not burn oil, does not tick in any way like a valve or tock like a rod. It has a Forge IC as well, not sure if it could be that-sound wise
posted by 65.118.125...
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