Question about GMC Jimmy

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Ok i have a 1998 jimmy 4.3 will not start up on its own but if you shot a little starting fluid it will start and run fine but when you shut it off same thing happens any suggestions

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  • cjkelly025 Aug 07, 2010

    after you run it a while does it shut off (die) on its own?

  • jpaint1971 Aug 07, 2010

    no it will run as long as you want it too



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This is likely to be related to the fuel system. You should first check the fuel pump relay or replace the relay located in the maxi fuse center under the hood. If this fails to work then you will need to replace the fuel filter to insure it's not plugged. If the filter replacement doesn't work then I would suggest that you check the fuel pressure on the injector rail. You can purchase a cheap fuel pressure tester at you local auto parts store. You will connect it to the little valve stem located on the injector rail. With the key in the off position and cycle it to on without starting you should see fuel pressure. If not you can try to start the vehicle to see if you have fuel pressure. IF you have no fuel pressure then it's likely to be a fuel pump.

Posted on Aug 07, 2010


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