Ok thanks I will give this a try.

 

Someone please rep David? I would but I'm in jail. Boy, does he know his stuff.

 

Good point Gary, that could point to the oil pressure switch not working.

Blade connectors come in male and female. Use a male and a female of the appropriate size with 6-8" of wire between so you can connect the relay to the socket and have some place to connect a test light or volt meter. Connect to terminal 86 (or 87) and you'll be able to see when you're getting power to the fuel pump. If you're only getting power for a short time when you first turn the key on that's your problem and is likely the oil pressure switch.

And thanks...

I guess 2,000 hrs of A&P mechanic training pays off once in a while...

 

Ok so i ran a lead from the battery to pin 87 and fuel pump turned on and pushed fuel to the carb, so if i follow things right that means that ether the oil pressure switch is bad or connection is bad right ?

 

That's what it looks like to me. And you should be able to confirm that by jumpering around the oil pressure switch. The only problem is that I don't know how the oil pressure switch is configured. It could be a single connector switch and take that connection to ground. Or, it could be a two connection switch. So, I guess we need David to confirm.

 

Ok thank you Gary I will keep things posted on if it works or not, but I don't see why it shouldn't .

 

Ok what is the official name of the oil pressure switch when I talked to the guy it was a plug with a little ball and no electrical connections.

 

I can't find it in the parts catalog. It must be there some place, but none of the many places I've looked. And, since I don't have wiring diagrams for your year I'm stuck. Sorry.

 

Ok thanks Gary. I figured I would get that part that they say it is and if it is not right I will find what it is for and replace it as the truck has sat for 8 plus years and it won't hurt.

 

I found some people calling an "oil pressure cutoff switch" and some an "oil pressure safety switch" on a Google search.

 

Ok thank you again

 

Ok so I replaced the oil pressure switch and it s all tuning now it ran for five or so min. A new problem has raised when you go about half into throttle there is a grinding sound like gears not meshing, I think it is timing please give some more input thanks.

 

Congrat's! That's a good feeling - fixing something. But, these trucks have been likened to onions with layers upon layers of problems. You fixed one, and now there are others.

Grinding gears? I've forgotten what transmission you have - please remind me. But it isn't likely it is gears. What about fan to radiator or shroud clearance? Could the fan be hitting either?

Another thought is anything that's rotating with the engine, like alternator, power steering pump, or an idler pulley. Can someone stand to the side, for safety, and tell you where the sound is coming from?

 

its not the traansmition its coming out of the engine, and just when it is reved faster then just under half

 

Another thing it might be is the water pump, although I don't think I've heard one sound like gears. Get a rod, narrow board, or short piece of hose that you can put one end to your ear and the other to various parts under the hood - staying away from the fan. Stand on the side for safety's sake and have someone rev it up so it makes noise and you probe around to figure out where the sound is coming from. If using a rod or board you'll have to touch it to the parts in question, but if a hose you'll just put it close. When you find the part making the noise you'll know. And if you don't know what it is take a picture and post it here. We will.