Mechanics

P0171 P1346 P1349

2003 Toyota Corolla • 1.8L 4 cylinder 2WD Automatic • 100,000 miles

Hi car in idle is innestable, I change cmp and vvt-i valve and clean the filter of vvt valve and the problem persist
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Luisfer
June 4, 2014.




Has the timing belt ever been changed?

Not change the timing belt, change the head gasket and assemble engine came back and started making failure

Tiny
Luisfer
Jun 6, 2014.
You mean the problem started after the head gasket was replaced? Also, a stretched or worn belt can cause this problem. When the head gasket was replaced, was the mechanic knowledgeable regarding engine timing on a VVT engine?
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