2007 Toyota Corolla Idle Runs rough

2007 TOYOTA COROLLA
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GEMINI1160
  • MEMBER
  • 1 POST
Engine Performance problem
2007 Toyota Corolla 4 cyl Automatic 19,000 miles

Hi, My issue is a week or two ago I was sitting at a light, the car was warmed up & I only had the radio on & the idle dipped down almost to a stall & back up quickly. After that I noticed the idle runs rough after it is warmed up what could be the problem. I have been putting in BP'S highest octane gas my last three trips hopeing it might help clean the engine & make it run better. Did not really do much that I can tell.

Any help would be appreciated.
Dec 7, 2009 at 4:04 AM
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MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 31,937 POSTS
Hi there, start with checking for a vacuum leak at the inlet manifold, and check the connections of all vacuum hoses in general, also a scan will also be helpful in tracking down this problem, star there.

Mark (mhpautos)
Dec 7, 2009 at 4:10 AM