1993 Chevy Suburban engine

1993 CHEVROLET SUBURBAN
288,454 MILES • V8 • 4WD • AUTOMATIC
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RYAN RBEGAY
  • MEMBER
  • 1 POST
stumbles when warming up when the idle goes down. goes up n down from there
Mar 24, 2009 at 6:51 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the idle air control valve and throttle position/manifold absolute pressure sensor.
Mar 24, 2009 at 9:48 AM
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