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Boost gauge flutter??? why?

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Old Jul 9, 2009 | 08:08 PM
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Default Boost gauge flutter??? why?
it's a mechanical autometer boost gauge. it normally hits roughly 6.5lbs of boost @ 6k and its steady. i drove it a lil bit ago and when it gets to 6lbs the gauge starts to flutter between 5 and 8 lbs of boost. does this sound like belt slip, boost leak or a bypass valve problem? there is minimal dust from the belt but that sucker is tight. thnx in advance.
Last edited by stangbangin69; Jul 10, 2009 at 09:24 AM.
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Old Jul 10, 2009 | 08:58 AM
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Your thinking is correct. After you've made sure the gauge connections are solid, start going thru your checklist and you should find it at some point. My first guess is belt slip.
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Old Jul 10, 2009 | 09:23 AM
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i drove it this morning and the gauge read like normal no flutter. could've been something in the gauge line? fluke? oh well.
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Old Jul 10, 2009 | 10:09 AM
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Your motor is telling you it wants a turbo
Good luck.
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Old Jul 10, 2009 | 01:51 PM
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If anything gets into the small plastic gauge line, the autometers can get erratic.

Brian
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Old Jul 10, 2009 | 03:44 PM
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Originally Posted by 396375
Your motor is telling you it wants a turbo
Good luck.
haha. i'll stick with the ole procharger for the time being.
although i did enjoy my 86 gn that i had. when the boost hit u had better hold on.
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Old Jul 10, 2009 | 03:46 PM
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Originally Posted by stangbangin69
haha. i'll stick with the ole procharger for the time being.
although i did enjoy my 86 gn that i had. when the boost hit u had better hold on.
That's a wise choice
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Old Jul 11, 2009 | 11:25 AM
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Originally Posted by stangbangin69
haha. i'll stick with the ole procharger for the time being.
although i did enjoy my 86 gn that i had. when the boost hit u had better hold on.
Nice.I have a shop that specializes in GNs for 20 years now.I've had a couple of 8 second twin turbos.I still love my C5 though.
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Old Jul 12, 2009 | 11:33 AM
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Originally Posted by 396375
Nice.I have a shop that specializes in GNs for 20 years now.I've had a couple of 8 second twin turbos.I still love my C5 though.
the nostalgia factor is second to none on those turbo 6s but the creature comfort on my c5 is awesome. plus it's got some major ***** at the touch of the throttle.
bet your shop has seen some badass cars roll through.
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