NEED HELP WITH 95 PICKUP Z24 FUEL FUSE KEEPS BLOWING - Nissan Forum
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#1 Old Nov 8th, 2005, 08:57 PM
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NEED HELP WITH 95 PICKUP Z24 FUEL FUSE KEEPS BLOWING

I BOUGHT A 1995 NISSAN PICKUP Z24 AND 2 DAYS LATER THE FUEL FUSE BLOWS EVERY TIME THE FUEL PUMP NEEDS TO KICK ON. I HAVE REPLACED THE FUEL PUMP AND CHECKED IT BEFORE INSTALL IT WAS GOOD, I ALSO HAVE REPLACED THE WIRE BETWEEN THE FUEL RELAY AND THE PUMP. AS FAR AS I CAN TELL THE RELAY IS GOOD. I DON'T KNOW WHERE TO GO FROM HERE. ANY HELP WOULD BE GREATLY APPRECTATED. THANKS.
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#2 Old Nov 9th, 2005, 12:03 AM
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WELL............ The last major piece to the system.......... is the RELAY...
When you say U know the pump was good..... Did U actually hear/ see it run outsid of the tank and hooked up to a different power source??? Then did U try it connected to the harness before install??? After removing more than 1 fuel tank.... More than Once, I have found this to be the ONLY certain way of making sure not to install a defective part..

Have u tested the harness where it connects to the Pump for power.... WITHOUT the pump hooked up...

If the harness maintains power with the pump disconnected then youve, most likely, got a bad pump.

Of course U can always just change the relay next and see if that works...

Hope this helps
Let me know what U find or if the Relay doesnt work

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#3 Old Nov 9th, 2005, 08:02 PM
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Originally Posted by nastynissan
WELL............ The last major piece to the system.......... is the RELAY...
When you say U know the pump was good..... Did U actually hear/ see it run outsid of the tank and hooked up to a different power source??? Then did U try it connected to the harness before install??? After removing more than 1 fuel tank.... More than Once, I have found this to be the ONLY certain way of making sure not to install a defective part..

Have u tested the harness where it connects to the Pump for power.... WITHOUT the pump hooked up...

If the harness maintains power with the pump disconnected then youve, most likely, got a bad pump.

Of course U can always just change the relay next and see if that works...

Hope this helps
Let me know what U find or if the Relay doesnt work


Thank you for getting back to me.
Yes, i checked the fuel pump from a battery before installation on the sending unit and then again after installation on the sending unit hooked up to the trucks wiring harness, it worked then i put the tank back in the truck and it ran for 10 to 15 minutes and blew another fuse. Since then i have checked the harness for power at the tank and it has no power, then went to the relay when there is a good fuse in it the relay has power when the truck is turned on and it calls for presure it pop's the fuse every time. I have run a new power wire from the relay to the tank and it still blows fuses. Now the relay has 2 power wires (black) and there is a white and blue wire that goes to the tank ( i replaced ) and a white and red which goes to the compute. I have also replaced that wire. And the truck still blows fuses. The relay, there are 2 other relays in the engine compartment that are the same I switched them to see if that made a diferance and it still blows fuses! I am lost and very confused. If you have any more ideas that would be great. Thanks again.
#4 Old Nov 10th, 2005, 11:04 AM
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Next question..... Was this a NEW pump? Or a used one.. Even though it works it could be drawing too much of a load through the circuit. If you have a volt/ ohm meter capable of reading Amps you should hook it up and see how much Amperage the pump is pulling. Thats one way of seeing if its drawing too much.

Stupid Question..... But i have to ask... U do have the proper size fuse??? YES??

If it was a new pump... Call whoever U got it from and ask about their Warranty policy. If it was a used pump... Try Again... Most JY's will replace a defective part with another... No refund though..

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#5 Old Nov 10th, 2005, 02:19 PM
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you said you replaced the wire from the fuel pump to the relay.. did you pinch the other one or any of the wires while reinstalling the tank?
#6 Old Nov 15th, 2005, 04:01 PM
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Quote:
Originally Posted by nastynissan
Next question..... Was this a NEW pump? Or a used one.. Even though it works it could be drawing too much of a load through the circuit. If you have a volt/ ohm meter capable of reading Amps you should hook it up and see how much Amperage the pump is pulling. Thats one way of seeing if its drawing too much.

Stupid Question..... But i have to ask... U do have the proper size fuse??? YES??

If it was a new pump... Call whoever U got it from and ask about their Warranty policy. If it was a used pump... Try Again... Most JY's will replace a defective part with another... No refund though..

Sorry that i haven't gotten back i've had a few things happen in the last week and i haven't gotten on the computer I did however find the problem the wire's were bad at the sending unit, where the go threw the metal to the fuel pump and the gas gauge. It needs a new one. Nissan told me that it is a common place for the problem. Dealer item only!!!!! $240.00 plus tax. Thank you very much for the help and ideas.
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