I have a '04 Toyota Matrix (an automatic transmission) and just recently it started making a knocking or rattling sound in the engine. It only happens when it's in "D" and idling, ie. stopped at a light -- it doesn't if it's in P. Is this an issue that must be taken care of immediately? Should I take it to a dealership? I thought this could be an oil issue so I had it chngd, but it still is making the noise.
'04 Toyota Matrix engine rattle?
- Thread starter Chris
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