1997 Ford Ranger Ford Ranger stalls out and will not restar

Thanks for getting back to me. After last week stalling on the highway several times and pulling out the PCM AND Fuel relay it restarted. Well I decided to take it to a local mechanic and he put it on a computer and it had a 231 error code. He thought it was a fuel pump problem and he also spoke to a dealer and advised that it was a fuel pump issue said it was working to hard, so I had him replace it. He took off the bed and he also asked if I had been smelling fuel. I had the last 2 times I filled up, I had a cracked fuel filler hose so at the same time he also replaced that part. Today it was hot and humid and after stopping the truck for a hour it would not start. After pulling out the PCM relay and putting it back in it started right away. Could it be a bad PCM or is it something else

PCM and fuel relay has been replaced by a mechanic when he replaced the fuel pump. I cleaned the connectors in the fues panel in the engine compartment, and sprayed electrical contact cleaner on the contactors. Since replacing the relays, fuel pump, filter, and cleaning contacts I am still having a problem. Again it would not start after sitting for 1 hour and last night it stalled out after gooing over railroad tracks. It seems every time now when it stalls out if I remove and reinstall the pcm relay it starts right up. This is really got me in a puzzle as I have done a lot of work an many of different vehicles and can not find the problem with this truck.

Had the same type of problem with my 94 Ranger. After changing the relay and verifying that the fuel pump was good I pulled the electronic control module and had it tested. I had to take it out since there was not a plug for the code tester. They said it was good, but when I reinstalled it my car would not start. My fuel pump would run, but there was no fire in the spark plugs (I did not test the fuel pressure regulator). I tested the coil and there was power to the coil, but not to the plugs. I then checked and found the coil was not getting the ground signal from the control module to fire the plugs. I replaced the control module (which had tested good) and it started right up and runs great. Hope this helps.