12,000 miles-5 Fuel Pumps Advice needed

[anotheridiot]

Check the gas cap? does it vent? Is the pump haveing to pull vac on the tank?

this sounds like the best idea. If it vents does it vent enough. I dont know about relays being close to the pump, all production cars have relays in the engine bay with the pump in the tank.

[Mater]

on my grand prix there is 20 feet of wire between the tank and the relay from the factory

[BlueCuda340]

Does it really matter where the relay is? It's still the same amount. Of distance for the power to travel either way.

[Mater]

the longer the wire the more voltage drop you get. so the hotter the pump and wire will run

[kyhunter89]

If I'm not mistaken, on my truck, from factory, there's a relay under the hood with the rest and another relay right in front of the tank under the bed.

[Mater]

does it have more then one tank? could be the selector solenoid

my F150 had one

[kyhunter89]

Single 26 gallon tank. Seems more likely to fail with two to me. Id delete the front one. A relay hardly pulls any voltage to turn on. Im not sure how its wired though, so maybe its not the switch side. idk.

I'd run a single next to tank.