2003 Toyota Corolla p0171 p1346 p1349

2003 TOYOTA COROLLA
100,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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LUISFER
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  • 2 POSTS
Hi car in idle is innestable, i change cmp and vvt-i valve and clean the filter of vvt valve and the problem persist
Jun 4, 2014 at 12:06 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Has the timing belt ever been changed?
Jun 5, 2014 at 12:00 PM
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LUISFER
  • MEMBER
  • 2 POSTS
not change the timing belt, change the head gasket and assemble engine came back and started making failure
Jun 6, 2014 at 1:07 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
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?
Jun 6, 2014 at 8:06 PM