GMC 1991 GMC JIMMY 4X4 4.3 EFI

  • Tiny
  • dwitt98
  • 1991 GMC Jimmy

I have a 1991 GMC JIMMY 4X4 4.3L EFI
My JIMMY WILL MISS AT SPEEDS AROUND 45-55,
BUT ONLY MISSES WHEN IT IS RAINING OR HAS RAINED ANY SUGGESTIONS

THANKS
DWITT98

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Thursday, January 4th, 2007 AT 6:56 PM

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  • Tiny
  • Service Writer
  • Expert
  • 9,254 posts

Highly likley plug wires are bad. If you take a spray bottle and lightly mist the wires from one end to the other, it will likley start misfiring and confirm this.

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Thursday, January 4th, 2007 AT 8:36 PM

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