Runs rough. Stalls going up hills and won't restart if still on the hill. I had to be towed from the highway today, was going up a steep hill. Fortunately here in California there is a free tow service if you brake down on the highway. I got towed to a street that was level and it started up right away and made it home from there.
Is this typical of a fuel pump, fuel filter, or fuel injector failure? Or something else?

 

I'd go with a failing fuel pump.

 

Thanks. How can I test it before replacing it?

 

You'll have to connect a fuel pressure gauge and see what it reads.

 

Thanks again. Is there a shrader valve near the carb somewhere?
Also, is there an access panel to get to the fuel pump or do I have to drop the gas tank.
I don't want to start ripping the carpet up if it's not necessary.
Another question, with no fuses in the engine area, I'm assuming there is a fuel pump relay. Where is that located? Or is that just run through the Automatic shutdown relay?

Sorry to be such a pest.

 

You have a carb?
What is the year and engine of this van?

 

1988 b250 van with 5.2L TBI.

 

i would go with fuel pump also .

 

okay, then you do not have a carb, you have a throttle body. Just making sure so that wrong advice isn't given.

 

There should be a Schrader vale on the fuel rail where the rubber hose connects to it. There is no access panel to the FP, you have to drop the tank to get to it.