"Forrest" wrote: 1987 E-250 302 CI
When driving, the engine will suddenly quit for a
few seconds then begin running again, as if the
key had been turned off and on. It happens
both at constant speed or under acceleration.
Does this sound like it could be a bad TPS?
Most likely failing ignition module.
Other possible (low voltage ignition system) problems:
bad/mismounted ignition switch, loose/broken wire,
bad connector, corroded connection terminals.