I have been having issues with my tachometer in my honda civic. The needle is spun all the way around pointing straight down, and occasionally is sporadic and jumps all over the place, and also reads the right rpms occasionally but only to act weird again. Here is a picture of what it looks like currently:

http://imgur.com/35TiAW8


Is it a sensor or is it the gauge on the dashboard?

Thanks!

 

Really a shitty pic but there usually a tiny pole that holds the need at 0rpm.

 

Right, there is. The rpms jump all over the place on the gauge, that's the problem.

 

The speed sensors are infamous for failing, and as replacing them is a lot easier and cheaper than taking the dashboard to bits and replacing the gauge, my inclination would be to start with that. As a test, disconnect the sensor altogether and drive around the block: if the rev meter and speedometer stay solidly at zero, that's almost certainly your problem.

 

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/98-civic-ex-tachometer-issue-3212540/

 

Where is the sensor located?

 

Found speed sensor, un plugged it and tachometer still acting funny. Thinking it's the tach in the dashboard. I'm going to see if I can't get a used tach from a junkyard possibly.

 

The VSS has NOTHING to do with the tach. Nothing.

 

Okay, so what now?

 

Did you read the thread at the link? READ.

Did you disconnect the blue wire at the ICM to see what happens?

 

Ron, thank you for your help. i just unplugged the blue wire from the ICM and ran the car. The tachometer did not move and was in this position the whole time.



http://imgur.com/3kxxG5s

 

Have the ICM tested. It may be bad.

 

Awesome. Thank you for all of your help, Ron.