Does this seem like a bad Hall Effect sensor? - Ford Mustang Forums : Mustang Forum
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post #1 of 2 Old 05-02-2018, 09:15 AM Thread Starter
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Does this seem like a bad Hall Effect sensor?

I am getting the code for erratic spark signal. If I disconnect the battery then hook it back up the car will start and run normally till I shut it off. Then if I try to start it it misses badly when it does try to run. If you use the gas pedal to try and keep it running it spark knocks also. It doesn't at all when it runs normally.

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post #2 of 2 Old 05-02-2018, 06:27 PM
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Code 18?
Disconnecting battery resets ECU & all that it has adapted.
Ford EEC-IV/TFI-IV Electronic Engine Control Troubleshooting

1988 GT, 57k mi, Orig Owner
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