Question about 1988 GMC Jimmy

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Truck wants to stall when i hit gas lightly but when i hit gas hard it goes

Just replaced plugs rotor and cap wires were replaced a year ago why does my truck 1988 gmc jimmy want to stall out if i dont hit gas all the way to the floor

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  • 38 Answers

Timing may be off adjust the cap. A timing light will help in this situation.

Posted on Nov 27, 2012

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1995 GMC JIMMY

I had a problem just like that on my blazer and it turned out to be the wire harness on the fuel injectors. It could also be your fuel injectors, had to replce mine at 85000

Posted on Aug 04, 2008

  • 255 Answers

SOURCE: i have a gmc jimmy

Hi,you can re check timing, run compression test,

Posted on Aug 23, 2008

  • 58 Answers

SOURCE: no power when hit the gas

The fuel presure should be at least 60- 66 psi key on engine off, and then drop some when started, if it doesn't go any higher than 50 psi that would explain your backfire concern. If it is low then the fuel pump is weak. I have also seen soot on the little wires inside the Mass Airflow Sensor cause a concern like this.

Posted on Nov 18, 2008

  • 3600 Answers

SOURCE: GMC JIMMY NO START BUT GOT SPARK AND FUEL

try the oil pressure switch, that was a common problem on Gm trucks when I used to work on them, the oils switch was bad and woulden't allow it to start and the ones I worked on were on the back of the distributor.

Posted on May 29, 2009

  • 12 Answers

SOURCE: my 1997 gmc sierra has a hesitation problem change

Did you check the timing?

Mine would idle rough and hesitate. I replaced all kinds of parts before finding out it was a bad ECM (computer) I found a used one for 50 bucks or so that fixed it.

Posted on Apr 19, 2010

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