1989 Other Ford Models Tacometer Misreading

1989 FORD
15,000 MILES • 6 CYL • 4WD • MANUAL
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ROB FERGUSON
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My 1989 Ford Bronco II XL's tach needle will periodically swing wildly or show an excessive rpm reading. There does not seem to be a pattern to when it behaves in this manner but is a random occurence.
Is there a faulty electronic pick-up or sender unit that is causing this situation?
Your assistance is greatly appreciated.
Dec 24, 2007 at 1:47 AM
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RASMATAZ
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You might want to check the coil's positive and negative connections-could also be the tach itself out of calibration.

The tachometer is always hooked-up on the secondary circuit of the ignition system
Dec 24, 2007 at 2:59 AM
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