I've got an '88 Ranger, 2.3L that has developed stalling problems. The truck will idle in the driveway smooth as a kitten all day long. When I pull out on to the road, it will begin to lose power and stall. If I pump the gas pedeal (although it is fuel injected) it will sometimes keep it from stalling all the way and recover. Sometimes, it will run a mile or two, sometimes not 10 yards. Doesn't depend on vehicle temperature or weather. I get no error codes from the computer, have replaced both fuel pumps, fuel filter, fuel pump relay and O2 sensor. The coil, distributor, plugs, wires, and idle air control solenoid all are within specifications.
Any ideas?