Question about 1990 Chevrolet C2500
Iam doing away with the fuel pump in the tank i took it out needing to know if my new pump needs to be hookd up to a relay? also need to know what color wire
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Posted on Jan 02, 2017
Check in relay box on passenger side near firewall for fuel pump relay.
By -pass, no such luck that I' aware of, sorry.
Posted on Apr 26, 2009
the relay and fuse are in the power distribution box under the hood. as far a by pass you still can use an aftermarket electric pump ,however the cost will be about the same as re3moving the old pump in the tank if that is the cause in the first place. if all you need is the relay replaced then i'm sure that the pump is still good. if the pump is bad then make sure if you by pass the in tank pump that the new under hood electric pump has enough pressure to give the needed gpm(gallons per minute) required for your system and that if wired into the current fuel circuit that you dissconnect the wire harness to your tank pump
Posted on Apr 26, 2009
The wires should be grey, orange and black, purple, and a black wire. The purple goes to purple, grey to gray. The orange and black goes to the small black wire on your car harness and the black goes to the bigger black.
Posted on Apr 30, 2009
Most likely a bad connector on relay or the fuel sock needs to be replaced. if the sock is plugged it would cause the fuel pump to work hard and cause it to heat the relay and make it hot and removing it will cause it not to run. check the connectors to the relay see if they are opened up in the female socket if they are use a dental pick to close them up with. otherwise replace fuel pump and sock at that age with the alcohol in fuel it's killed the pump and sock.
Posted on Jun 13, 2009
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