LUVTruck.com

a while ago i replaced my gas tank because mine was incredibly rusted inside. when i started my luv it ran for like....5-10 seconds. I later discovered it was the pump. so i took the pump from my junked 78' LUV and put it on. damn , still didnt run long. i found out that it wasnt getting power. i followed the pump wire all the way to the first harness in the engine compartment.there was nothing wrong. so i think its the harness in the cab, but i dont know which wire which. my haynes manual is a mess to work with. can anyone help me with this. oh, and i need a radiator for my 79 4x4, i live in monroe,washington.

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Currently no more luv's... But in search of one!

I can't remember, but isn't the fuel pump controlled by a relay?

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03Cobra

yeah 79-80 have a relay mine burnt up on my old 80 so i conected it from the ignition

Check and make sure the voltage regulator is not burned. My 80 quit running one morn. It was the relay in the voltage regulator. The terminal inside burned off and wouldn't turn on the relay(which is under the gold colored panel on the passenger side of the engine compartment) for the fuel pump. Replaced the voltage regulator and everything worked fine. Good luck

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1980 4X4 LUV

Yeah mine HAD a relay for the fuel pump....... now it is hard wired with a toggle switch cause I checked every last place I could think of to find another relay, short of looking on another truck. I figured that what the hell a toggle aint to bad for it, sucks when I forget to turn it on though !!! My two pennies
Later
Husker

Check and make sure the voltage regulator is not burned. My 80 quit running one morn. It was the relay in the voltage regulator. The terminal inside burned off and wouldn't turn on the relay(which is under the gold colored panel on the passenger side of the engine compartment) for the fuel pump. Replaced the voltage regulator and everything worked fine. Good luck

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1980 4X4 LUV

The relay gets bypassed while cranking, which sort of explains the 5-10 seconds you do get. You'd probably get a longer run time if you pulled the coil wire, cranked it over for a 5-10 seconds to fill the carb bowl, then hooked things back up and started. Not that it gets you any farther, but if the carb is full you should get it to idle 30-40 seconds if not longer.

Either the regulator or the relay could be bad, or wiring in between. Pull that cover on the passenger inner fender and find the relay. You should be able to check it using some scrap wire and the battery. If you can get it to click by jumping it, you can eliminate it as the source. Seems like a lot of folks have had trouble with it though, so it seems a likey culprit.

I don't like to wire around the relay with a toggle or just hard wired into the ignition because it is a protection in a crash. I hit a bridge in my 76 and if the fuel pump had kept running I might have woke up to quite a fire, if I woke up at all. Instead I just woke up cold and alive. You do what you have to get your truck going though sometimes. Given a choice between no LUV and holding the wires in my teeth for the pump, well you could just call me Sparky.

I remember that voltage regulator....I hated it so I changed to a GM alternator.....that was a loooooooong time ago! whew.....

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03Cobra

i have my fuel pump on a toggle switch.that way no can steal my pride and joy.lol

well...they could steal it for how many miles they can get out of a bowl full of fuel.....

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03Cobra