Civic EG

Posted: **Wed Aug 03, 2011 2:38 pm**

Any ideal why the RPM meter go up and down(jerk) when engine idling(cold)
Atfer engine warm up the RPM meter seem to be ok.
Is the RPM meter,sensor or wiring faulty?

Posted: **Thu Aug 04, 2011 1:04 am**

IACV is bad, not connected, possible clogged.

Posted: **Fri Aug 12, 2011 1:26 pm**

your engine runs exactly as the rpm meter shows??

Posted: **Fri Aug 12, 2011 2:02 pm**

The engine RPM is stable, but the RPM meter show up and down by it self.

Posted: **Fri Aug 12, 2011 7:46 pm**

heecn wrote:The engine RPM is stable, but the RPM meter show up and down by it self.

ah, i misread. I thought you mean the car was idling up and down.

sounds like it is the tach going out on you.