Question about 1994 Oldsmobile Bravada

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94 olds bravada 4.3 fuelinject.

Before, i could hear the fuel pump shutting down when i turned car off. all the sudden it stopped and it wouldn't start anymore. i tried changing the relay, but that didn't work. so i changed the fuel pump and it still isn't running. it has 2 wires ( pink and gray) that plug in and a ground wire. i'm getting about 11volts from the pink wire and approx. .03volts from the gray one. i can't find any bypass wire near the battery. nearly impossible to get at the oil pressure switch and what i think is the prime switch, although i'm sure which is which. one is directly under the distributer and one is towards the passenger side. any help would be greatly appreatiated.

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  • dan Nov 30, 2008

    i also jumped the old fuel pump on a battery and it worked, so i bought a new pump for nothing. i'm going to try replcing the wiring harness to see if thats the problem. thanks.

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1st check battery then batteries negative ground wire check for corrosian YES I KNOW you already checked that.Good now check negative ground wire connection to frame of vehicle OK Now check positive wire at Battery for corrosion in liettle Wire.Make sure ground wire to frame is not corroded and is tight.Maybe have some one wiggle the positive wires some when you try starting car!This could help if it sometimes works and sometimes not.Last check and switch fuse in fusebox with different fuse maybe it blew! Because wires at battery corroded or loose.Good fortune to you.

Posted on Dec 08, 2008

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Check your fuses under hood and under dash and if they are good it is possible to get a bad fuel pump or one that has the incorrect fuel pressure

Posted on Nov 30, 2008

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1 Answer

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