2001 Toyota Corolla multiple problems

2001 TOYOTA COROLLA
148,000 MILES • 4 CYL • FWD • AUTOMATIC
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MSKUMON
  • MEMBER
  • 4 POSTS
will the mass air flow sensor cause my car to run rich?
May 30, 2009 at 7:53 AM
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MMPRINCE4000
  • CAR REPAIR CONTRIBUTOR
  • 8,548 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.
May 30, 2009 at 8:02 AM
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