1990 Honda Civic erratic tachometer

1990 HONDA CIVIC
182,626 MILES • 4 CYL • FWD • MANUAL
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REALPOOME
  • MEMBER
  • 1 POST
I replaced the ignition coil and igniter unit of my car about a month ago and now I have noticed that my tachometer bounces erratically when I accelerate and when the rpms go above 2500. I'm not sure if the replacement and the tach are related but I'm wondering what could be the cause and if I should be concerned.
Jun 20, 2008 at 4:23 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,814 POSTS
Hi realpoome,

The tachometer gets its signal from the ignition coil. Check for loose connection at the distributor.
Jun 21, 2008 at 5:21 AM
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