Mechanics

WHY WON'T MY SPARK?

1990 Ford Taurus • 250 miles

Ran out of gas, tried to restart many times- cranks but won't start, turned hazards on, returned filled gas- plenty, batt. Now dead, charged and jumped- wouldn't start (did I blow the EEC/PCM if I charged with key in the ON position- for the hazads?), Towed home. Checked fuel shut-off/ inertia switch- hadn't popped, removed fuel filter, primed fuel pump- 4-5 oz of gas came out, replaced filter, tested Schrader valve- seems to have sufficient psi, hmmmmm?
Checked spark- no spark and plugs wet (what happened?). Took the ignition control module to O'Reilly's- everything passed, rented OBD- no codes, looked up test for ignition coil and misread the test- bought a coil without need, bought plugs and wires, replaced all three, tried the test again-I get a light on my test light at the (+) wire to the coil and the (-) wire to the coil, however, when I crank the engine the test light does not flash as the test said it should when connected to the (-) wire of the ignition coil. So, I am told to check wiring from EEC to ign. Coil at the EEC looking for a constant light- couldn't identify wire and gave up on that. If the light had consant light the wire could be deemed ok and now the driver/transistor in the EEC would need to be looked into through examining the powers/ grounds to the EEC, but more probably the crankshaft position sensor and the camshaft position sensor and then the EEC itself.
This is where I am now. I want to test the two sensors and I want to know if I have properly narrowed the problem down to the sensors, EEC, and wires between them using the ignitiion coil test or if something else could be wrong like a problem in the distributor (PIP sensor?)
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Janesmith
August 13, 2012.




If yo are getting spark fromt eh coil to the dist then you either have a rotor cap or dist cap that h as gone bad or a coilwire or all threee. I am not an instructoron how to fix a car an d if you can't get it to runi'd suggest you take it to a pro who can. From the the info i've given you you should have been able to figuresout what is wrong with the car doing a step by step follow through. Scanning for codes an dcheckecing fuel pressure shold be the very first things you do on fuel injected engines. You could have a crank sensor or dist problem with your vehicle. I canoffer no further comments
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Hmac300
Aug 14, 2012.
[quote]Also when I checked the psi it seemed to be around 35 (didn't have a pressure gauge after I had bled some air and fuel quite a few times, I got a good amount of fuel pressure each time I primed it.[/Quote]

That sounds like nothing but a wild guess and no idea if the pump picks up during cranking.

Wrenchtech
Aug 14, 2012.
Thanks for taking the time to help. I really appreciate it and will keep all this in mind when I return to the car.

Tiny
Janesmith
Aug 14, 2012.

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