2000 Chevy Suburban idle

2000 CHEVROLET SUBURBAN
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DEBUSE
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Engine Performance problem
2000 Chevy Suburban V8 Four Wheel Drive Automatic 98000. miles

I had a code reader ran on the vehicle, it said the mass air flow senor & and the idle air control valve were bad, i have replaced both, but in cold weather it wont idle smooth, it just hunts back and fourth, but if i unplugg the mass airflow sensor it will run fine, i looked at the wires for the mafs, they appear to be ok, do you think the mafs could be bad, it was a reman. thanks for your time.
Nov 18, 2009 at 2:50 PM
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DOCFIXIT
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Hi
Would you post code in P0xxx format? That will help in diagnosis
Thanks for donate
Nov 18, 2009 at 3:08 PM
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DEBUSE
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cant dont have the code
Nov 18, 2009 at 4:06 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Most times when MAF disconected and idle good is a faulty crankshaft sensor that does not set code but causesMaf to set. Located right side block above starter.An Auto Zone will pull codes free.
Nov 18, 2009 at 4:30 PM
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