2001 Toyota Corolla multiple problems

Tiny
MSKUMON
  • MEMBER
  • 2001 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 148,000 MILES
Will the mass air flow sensor cause my car to run rich?
Saturday, May 30th, 2009 AT 7:53 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Yes.

If malfunctioning, PCM will set it to a default setting, which is always rich to protect engine from a lean condition which can burn a piston in no time.

MAF should set an error code. Have car scanned at some autoparts stores for free.
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Saturday, May 30th, 2009 AT 8:02 AM

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