2011 Chevy HHR LT Humming Under the hood
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Joined: 01-23-2009
Posts: 26,533
From: Fredericksburg,VA
Vacuum leak should trigger a CEL, but not always. I seem to remember have a wild goose chase that turned out to be a cracked hose.
A stethoscope should help narrow down the area, just sticking your head under the hood should tell something.
97% of the time "humming under the hood" is the flex pipe; the other 3% is alternator or "other".
If it is only while moving about 70% hubs 30% flex pipe.
A stethoscope should help narrow down the area, just sticking your head under the hood should tell something.
97% of the time "humming under the hood" is the flex pipe; the other 3% is alternator or "other".
If it is only while moving about 70% hubs 30% flex pipe.
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tonydetiger
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Jul 25, 2011 11:26 PM
