Rev Counter and MPG gauge problems. SI board and fuses good.

[337]

Hi, I've done a lot of reading to see why my rev counter and MPG gauge isn't working.

-SI batteries are good
-I've changed fuses # 10, 19 & 21 (They weren't blown)

Any other leads as to what to check next?

Thanks,

[whiltebeitel]

re-flow the connections on the board?

[jlevie]

The next things to try would be a different tach, SI board, and DME. The easiest diagnostic would be to temporarily swap in a cluster that is known to work properly. If that fixes the problem the cause will be the SI board or tach. If it doesn't the DME is cause.

[337]

Thanks for the help!

The DME is an other name for the ECU?