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changed crankshaft position sensor now vacuum cleaner whine when engine is running

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Old 12-16-2014, 09:41 AM
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changed crankshaft position sensor now vacuum cleaner whine when engine is running

So I took my intake manifold off and changed my crank sensor, put everything back and now my car has a terrible whine when car is running. It stops when I give it gas...did a boost leak test before I started which was fine. Did it again after and it blows air through the oil cap now. I drove it about 5 miles down the road and when I let off the gas it backfires like crazy....any thoughts??
Old 12-16-2014, 09:45 AM
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One more thing....it doesn't make the whine till the car warms up...
Old 12-19-2014, 01:48 AM
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Small vacuum leak somewhere.
Old 12-19-2014, 04:28 AM
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Originally Posted by potterturboss
So I took my intake manifold off and changed my crank sensor, put everything back and now my car has a terrible whine when car is running. It stops when I give it gas...did a boost leak test before I started which was fine. Did it again after and it blows air through the oil cap now. I drove it about 5 miles down the road and when I let off the gas it backfires like crazy....any thoughts??
What did you connect the boost leak tester to??

Last edited by LNFwagonSS; 12-19-2014 at 04:28 AM. Reason: Automerged Doublepost
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