1989 Other Ford Models Tacometer Misreading

1989 FORD
15,000 MILES • 6 CYL • 4WD • MANUAL
Avatar
ROB FERGUSON
  • MEMBER
  • 1 POST
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
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
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