Re: Ford F-150 nightmare
I had a 1989 Cougar wth the 351 W and it would stop for no apparent reason, then I remembered reading somewhere about a Hall effect coil located inside the distributor. The action of the vacuum advance was always flexing the wire between the pickup coil (located on the vacuum advance plate) and the outside of the distributor. This constant bending of the wire eventually broke the conductors inside the wire insulation. I replaced the coil and it solved the problem. This device looks like a tape deck head and is located very close to the reluctor ring (an iron ring with 8 little arms sticking out from the distributor drive shaft). The ring provides a magnetic signal to the pickup coil to tell the ignition module when to fire the spark plug. This is a very inexpensive part and eay to change. It cost me about $15.00 canadian
back in 1999 for this part.
1.Remove the distributor cap and rotor.
2.gently pry up the reluctor by applying even lift pressure all around the ring
3. Unscrew the pickup coil from the vacuum plate.
4. install new coil at exactly the same location and distance from the ring as the old one.
5. gently press with even pressure the reluctor ring onto the distributor shaft
6. check clearance between reluctor and pickup coil it sould be the same as before
7. Remount rotor and cap and try to start.