Question about 1994 GMC Safari

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I just replaced my fuel pump in my 94 GMC Safari in may, now end of July I must do it again. What could be the problem causing this to happen?

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Did you install a GM pump or a aftermarket? Some aftermarket pumps are no good at all. Also check your connection at the pump and make sure that your ground wire is in good shape as well as you have a clean and tight ground to the frame.

Posted on Jul 31, 2010

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1994 gmc safari, wont start. seems to be trying to. changed fuel pump and filter, didnt help. now what


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I think you may have a bad spider. the pump can be changed by itself but I would do the spider itself if i was going to try anything else-good luck

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If your not getting the MIL- engine light coming on and you can smell gas and you had the fuel pump replaced. I would sespect the electronic ignition module of being intermintent. It wouldn,t necessarily show as an engine code and would make it so the vehicle would run find one munite and not run the next The other thing you could check is the fuel filter however i can,t see a mechineic not changeing this with the fuel pump

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DO'ES THE VAN TURN OVER ? DO'ES THE VAN HAVE THE FUEL PUMP RUN LONG ENOUGH TO BUILD FUEL PRESSURE?IF YOUR FUEL PUMP AND STARTER ARE WORKING THEN CHECK FOR FIRE TO THE PLUGS. YOU MAY NEED TO GET THE CODES READ TO FIND THE PROBLEM IF YOU HAVE FUEL AND FIRE.ONCE YOU GET THE STORED CODES,REPLACE THE SENDER THAT CAUSED THE CODE OR REPAIR THE WIREING TO IT.

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yes delivers the fuel bat is not enaf pressure replase fue pomp end you be ruaning agein

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Ihave problem with 92 gmc safari it drives sometimes during driving car buck like it.s out of gas . I'll turn igntion on and off real quick. and car drives ok. Ihave replaced fuel pump.


sounds like a bad plug wire, take a squirt bottle while the car is running then spray the wires down they should start arcing, also when you replaced the fuel pump did you replace the fuel filter

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I have a 1994 gmc safari.It seems to have a smooth idle at times


Im not sure if you got it fixed yet! It could possibly be idle air control valve. But here some more suggestions! I had a 94 Safari van 4.3 liter I was working on for about three days and I finally figured out what was wrong with it. It would run fine for a couple minutes and as soon as I hit the gas and let off it would surge, but anyways I ended up changing the distributer, after the fuel pump and filter, mass air flow sensor, egr valve, idle air control valve, map sensor, and ignition module. So that might sove the problem if you were on the same track with it as I was. Hope this helps ya!

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Take off your gas cap and have someone stand there with thier ear at the hole, (no smoking), turn the key to on just before start and they should hear the fuel pump humming. if they dont then try to start. if it doesnt start turn key off and at that instant the pump should be heard again. What i think is happening is your pump is not energizing . Its supposed to energize when turning your key on and off. This can be caused by a bad fuel pump or pump relay switch. Hope this helps. please rate me

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1 Answer

My dads 1986 Gmc Safari want start


Take off your gas cap and have someone stand there with thier ear at the hole, (no smoking), turn the key to on just before start and they should hear the fuel pump humming. if they dont then try to start. if it doesnt start turn key off and at that instant the pump should be heard again. What i think is happening is your pump is not energizing . Its supposed to energize when turning your key on and off. This can be caused by a bad fuel pump or pump relay switch. Hope this helps. please rate me

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