Fuel tank switch/selector on dash. What happens if it goes bad on a 93 ford f250
Starts up, idles, put in gear add power runs for 4miles, starts backfiring under-hood,
looses power( mean while switching tanks back and forth, pumping accelerator) before it
dies. Let it cool down for twenty minutes can baby it back home. Changed both fuel
pumps, fuel filter twice, oil/filter, EEC , FPR. That's say I have not changed coil, ICM