1998 Chevy Suburban engine runing too rich

Tiny
HERBERT DYER
  • MEMBER
  • 1998 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 127,565 MILES
Trying to fix this problem quickly and cheaply, hoping it has a simple solution
Wednesday, December 16th, 2009 AT 4:56 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi Herbert Dyer and TY for the donation and we wish you a Merry Christmas and Happy New Year 2010.

Running rich is a fuel mixture that is too much fuel than air that can be caused by the following below

A bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Wednesday, December 16th, 2009 AT 9:21 PM

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