knocking sound?
11-02-2004, 03:30 PM
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knocking sound?
my 1998 pontiac bonneville has a loud knocking sound when i turn it on in the morning and after it gets warmed up it goes away and the check engine light turns on? what can this be?
11-02-2004, 06:09 PM
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only when its idle in the morning when first started. the knocking sound is pretty fast sounds like metal hitting against something. it sounds by the upper intake manifold.
11-02-2004, 11:51 PM
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actually now everytime i start it it makes the sound for like 5 minutes then it goes away after i start driving. the oil pressure is good.
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chasmanz28
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10-29-2003 01:31 PM