Question about 2009 Buick LaCrosse CX
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Posted on Jan 02, 2017
SOURCE: KNOCK SENSOR
When a knock is detected, it sends this information to the computor, in which retards the ignition timing. If the sensor is bad, it will do this more often than not.
Posted on Mar 30, 2009
Sounds more like you have a bad fuel pump.If you have a pressure tester then check the fuel pressure.You need top have between 41-47 psi fuel pressure.
Posted on Nov 23, 2009
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