hay guys im new here anyways my truck wich is a 88 ram d150 with a 318 and 4x4 stoped running heres what happened last summer i went to park the truck for the summer and it acted liked it ran out of gas so i just parked it and this week went out to start it with fresh gas and no go so now i thought its the feul pump but i dont think its getting voltage cause im getting this pulsing voltage out of 1 pin back there but im also getting this at other points on the motor and on the tps im getting some very little voltage on the right side of the plug in this is weird can sombody tell me where to start as maybe the comp gone bad or somthing else cause it will run if i pour gas in the body i need to get this running driveway is a 1/2mile long and sucks walking 6thanks

 

you could try running a positive wire straight to the fuel pump. if that makes it start and run the i would put it on a toggle switch. if it don't start i would think about mabe replacing the fuel filter.

 

do u know witch one gets the wire i have 4 wires back there cause the voltage i have is on the lower left and that pulses do u have the pin out so i can make sure im on the right one and its not the filter cause i cant hear the pump running please help cause this is my plow truck thanks

 

I would check the auto shutdown relay and if you have one the fuel pump relay. You might also want to check the fuel pump fuse.

 

do u have a layout of were these are cause im lost and no book please and what the readings should be thanks

 

Shut down relay is on the drivers side inner fender. It should be the second one from the front of 3 or 4 that are there right under the hood spring. The fuse is in the fuse block and should be labeled. I am not sure whether your year has a fuel pump relay as some do and some don't.

 

ok ill check in the morn would truck still run if this was bad? cause its runs if i pour gas into the body and wene it quite during the summer it acted like it was out of gas so go figure

 

All 3 of the things I mentioned control whether the fuel pump works or not, so yes the truck will run on an alternate fuel supply.

 

ok any body have a fuse location or where the relayes are and how to test them

 

Fuses are under the steering column behind a panel with 4 screws. Shut down relay is on the drivers side inner fender. It should be the second one from the front of 3 or 4 that are there right under the hood spring. The fuse is in the fuse block and should be labeled. I am not sure whether your year has a fuel pump relay as some do and some don't.

The relay should have continuity between terminals 85 & 86. Terminals 30 & 87 should be open. Be sure you have power at the relay plug. Power to pin 30 with key off and power to pins 30 & 86 with key on. If you apply power to 85 and ground 86 on the relay you should here it click when it energizes.