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Fuse Link For Fuel Pump - 1994 GMC S-15

Can anyone tell me where to find the fuse link for the fuel pump on a 1994 GMC Jimmy wiith a 4.3L Vortec engine... I am assuming that is the problem as the fuel pump doesn't spool up when I turn on the ignition switch

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  • GMC Master
  • 2,359 Answers

Fuseable link is coming of the battery terminal.

Open the hood of the GMC Jimmy. Check and clean both terminals.

You will need a DVM meter to do the test.

The simple way is to disconned the negative cable and ohm out each fusible link that extent from the positive connector.

You job will be a lost easier if you have a probe that can pintch though the insulation.

Otherwise you can strip a little insulation off and get the ohm reading and tape this secetion back with electrical tape.

Take your time and check all the fusible link.

If this is the first time your doing eletrical trobuleshoot then please ask someone to guide you along.

Please post the out come via the comment page. I will follow up on it later.


Posted on Jul 26, 2009

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Posted on Jan 02, 2017

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1 Answer

No juice going to fuel pump


Are you having more than one issue? With engine cranking, if no fuel pump, no fuel injector pulse--and no spark at the plugs, I usually check for missing rpm signal. These system may operate a little differently depending on year-- make and model.

What is your year--make--model?

As far as checking fuses, your owners manual should tell you what fuses for fuel pump and or fuel pump relay and where fuses are located. Your fuel pump needs voltage and ground. If you want me to post a wiring diagram, I need year--make--model, only vehicles sold in the US.

Click on the comment link for diagram. The gray wire carries voltage to fuel pump, when relay is energized. You see the ecm bat fuse, not only check the fuse, check the fuse circuit for voltage, hot all the time.

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The ECM on the jimmy, is located on the passenger side fender well by the overflow tank. But before replace the ECM, inspect the fuel pump and fuel pump relay. The ECM sends power to the fuel pump relay and if the relay has gone bad will cause the fuse to blow which will kill the the power to the ECM, in turn kill the electrical power to the ignition system.

Start by removing the fuel pump relay and swap it with another relay and see if the fuse will blow again, if is does. Disconnect the fuel sending unit wire harness at the frame and see if the fuse blows again, if the fuse stays good. Chances are your fuel pump has gone bad or the fuel filter is dirty/clogged causing your fuel pump to draw more amp and will need to be replaced or the wire harness from the frame to the sending unit has a short which is common on older Jimmy's.

Here is a link to the electrical harness throughout the Jimmy.
http://www.compnine.com/index.php?t=...lid=6872&uid=1

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DISTRIBITOR NOT GETTIN SPARK CHANGED THE IGNITION MODULE STILL NOT WORKING


I have a 1994 Jimmy 4.3 Vortec it ran gd the other day now all t once it shut off on me while I was driving down the street! Have new fuel pump new rotor new distributor! It crank but not start! Would sumbody help me with dis!

Aug 10, 2012 | 1991 GMC S-15 Jimmy

1 Answer

1989 gmc 15 truck engine trun but wont start i replaced the fuel pump and it still wont pump fuel i can't find a fuel pump fuse the fuel pump relay is good.


check you owners manual for a fuel shut off switch. they are only supposed to cut out in an accident but mine does it sometimes anyway. different car

May 06, 2011 | 1989 GMC S-15 Jimmy

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Trying to find the fuse position in the fuse box for the fuel pump for a 1993 gmc jimmy. do not have the cover for the fuse box.


Here is a link to your fuse panel. The fuel pump is controlled by the ECM through the fuel pump relay which is located on the firewall by the brake booster.
http://ww2.justanswer.com/uploads/ZZdaryl/2009-12-20_014123_fuse.gif
Thank you for using fixya, and good luck

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fuel filter has no fuse. Do you mean fuel pump or fuel pump relay fuse?

Feb 21, 2010 | 1994 GMC Jimmy

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replace the fuel pump relay, it is burned closed from the shorted fuel pump.

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2 Answers

1994 jimmy fuel shutown @spider?


Hi

A very common failure on these is the CPFI unit , or SPIDER as people like to call it.

There is one single injector which feeds each cylinder via a pipe and poppet. The injector becomes blocked and the engine won't start or run.

Before you go condemning this though, just make sure you have good fuel pressure because the fuel pressure regulator or fuel pump could also have a hand in the problem. Make sure the pump is running, and if not then check the fuse, the relay, and the pump itself.

Very best regards

Geordie

Jun 18, 2008 | 1991 GMC S-15 Jimmy

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