I have a 1990 ford f150,4.9L,6 cyl.,I was driven it and stopped for fuel at gas station,I tried to star it out with no exit since then I can't get spark from the distributor.According to the manual I checked every single step on all the voltages and every thing is OK.I replaced ignition switch,pickup coil,ignition module,distributor cap,rotor,EEC relay,ignition coil,spark plugs,spark plugs wires,I checked all ignition system harness and all are OK. I checked the rotor for spinnig and it's fine.The only thing I haven't replace is the PCM 'cause is too expensive and I don't know is a bad PCM causes no spark.I HAVE SPARK ON THE IGNITION COIL BUT WHY I DON'T HAVE SPARK ON THE WIRES.I don't where I ave to keep looking,please help me!!!!!!!!!.
I had the same problem. there is a group of wires that go by the distributer and branch off to the distributer and go towards the front. when i would jiggle it the van would die. it ended up being a pinched wire.
Replace the wires from the the ingnition module from the coil.
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The spark is cominig out from the top of the coil,but when I check the spark on the spark plugs cables I don't get spark,remember the all the spark cables are new,if I get spark on the coil why I have to replace it?
if spark is going into the cap the but not coming out put a cap on it also check you coil wire.
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