Tachometer not working properly

Tiny
RAMAH DAN AGUAM
  • MEMBER
  • 2004 FORD EVEREST
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 1,411,689 MILES
Engine runs okay, but usually the tachometer would go to zero without any change in the engines run then tachometer would go back to normal.
Friday, October 12th, 2018 AT 8:57 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,397 POSTS
Hello,

This can happen when the ignition system is back feeding in the tachometer system. I would start with a full tune up, plugs throttle bore service etc. Here is a guide to help us get started, use OEM parts.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please run down this guide and report back.

Cheers, Ken

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Monday, October 15th, 2018 AT 11:45 AM

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