1990 Ford E150 1/2ton Club Wagon 5.0 EFI: Problems with it cutting off while driving. When driving it cuts off. It takes anywhere from 30 seconds to 3 minutes for it to start and run again. I performed an OBD1 test and it came back reading a code 12 (idle control fault). I replaced the eec and fuel pump relays, the egr position sensor, the tp sensor, the IAC valve, rocker arm cover gaskets and still have a cutting out problem. The external fuel pump and filter were changed a couple months ago as well. I was considering the ignition coil and would like to know an easy test procedure regarding the coil. I heard oyu can put a wet cloth over the coil to test it but that is as far as my knowledge goes with that. Any help on this issue would be appreciated

 

OK....several problems with the club wagon cutting off while driving. I previously mentioned that I replaced the egr and tp sensors, the IAC valve, eec and fuel pump relays and today just replaced the ignition coil. Drove around the block and it stalled out on me again. waited about three minutes and it started back up and I parked it. I listened real close and noticed a whining noise associated with the external fuel pump. I then noticed that the whining noise wound down...stopped...and the van died. I have to assume it's a problem with the external pump, cut-off safety switch, or something dealing with the fuel delivery.....any suggestions as far as troubleshooting the fuel delivery? thanks

 

Some vehicles had two fuel pumps. One was a low pressure one in the tank and a high pressure one mounted on the left inside frame rail approx. under the drivers side seat.
Sounds like the hi pressure pump is possibly part of the problem. Check all the connections before condemning the pump.