Tachometer not working properly?

Tiny
DV2020
  • MEMBER
  • 1996 NISSAN PATHFINDER
  • 3.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
So, the tachometer is going crazy. Doesn't seem to affect transmission. It's just going haywire. What could be the cause?
Saturday, February 4th, 2023 AT 6:01 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
This can be caused by one of two things either the ignition system is back feeding into the tachometer circuit or the tachometer itself is going out. Can I ask if the engine is misfiring? If it has been a while, I would change out the spark plugs, cap, rotor and spark plug wires. Here is a generic guide to help walk you through the steps with instructions below for your truck.

https://www.2carpros.com/articles/how-to-change-spark-plugs

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Saturday, February 4th, 2023 AT 12:47 PM

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