1991 GMC Jimmy s-15

Tiny
MARTINROSASJR
  • 1991 GMC S15
  • 6 CYL
  • 4WD
  • MANUAL
  • 149,000 MILES

What would cause my truck to idle roughly when I am at a stop light or stop sign and to stumble during acceleration? I have replaced the tps, egr, iac, wires plugs, rotor and cap, fuel pump, and filter.

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Monday, January 24th, 2011 AT 11:11 PM

1 Reply

Tiny
HMAC300
  • EXPERT
  • 46,998 POSTS

Spray around the tbi unit at the bottom. If your rplm's change the gasket is leaking and needs tobe changed.

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Tuesday, February 1st, 2011 AT 12:01 AM

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