Question about 2002 Toyota Corolla
As you might suspect, it is hard to detect a rattle source, unless one actually drives the vehicle. My best guess is that the KNOCK SENSOR is either working erratically, or not working at all. This type of failure more or less matches your description. Have the engine scanned, and if sensor is found damaged, it is easy and inexpensive to replace. Driving for extended periods of time (months) with this noise (knocking engine) , will cause permanent damage to engine.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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