running bad

1992 GMC SONOMA
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TATER71
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  • 1 POST
I have a 1992 gmc sonoma that runs rough when you put it in gear, any idea on what it could be
Nov 16, 2011 at 12:29 AM
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DRCRANKNWRENCH
  • ✓ASE Certified Mechanic
  • 3,380 POSTS
  • ASE Certified Mechanic
It is probably the Idle Air Control Valve which changes the engine idle with engine load, such as loads from being in gear, accesories, etc.
The other thing to check would be the fuel pressure.
Nov 16, 2011 at 12:53 AM
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