Rev Counter

Post Mon Aug 17, 2015 7:45 pm

All clocks work bar the rev counter.
Hep needed

Post Mon Aug 17, 2015 8:54 pm

Try taking the cluster out, there is a guide on the wiki. You can unbolt it pull down and slide left out. Check the screws are tight and the connectors. Also check the white plug bottom right is in ok. If that's no help I have a spare cheapish, the components are easy to change.i believe it shouldn't matter as the white plug determines how many revs it should show based on the engine but get a second opinion here.

Post Mon Aug 17, 2015 8:55 pm

thanks will check

Post Mon Aug 17, 2015 9:54 pm

Rev. counter dies when the SI board batteries do, if they are of the NiCd type.
Do the SI LEDs work properly?

Post Mon Aug 17, 2015 10:18 pm

Brianmoooore wrote:Rev. counter dies when the SI board batteries do, if they are of the NiCd type.
Do the SI LEDs work properly?

What is the SI board batteries.
sorry if stupid queston.

Thanks for reply

Post Mon Aug 17, 2015 10:36 pm

The memory back up batteries on the circuit board in the front half of the instrument cluster, that contains all the electronic circuitry for the cluster, except for the speedometer/odometer and the brake pad warning light.
SI indicator is the row of green LEDs at the bottom of the cluster, with a yellow one and a red one at the RH end, and three lights above for 'oil service', 'inspection' and a clock synbol.

Post Mon Aug 17, 2015 11:52 pm

I have the same issue, and I have 3 leds on atm, but no rev counter, 1984 chromie M10

Post Tue Aug 18, 2015 10:51 am

just ordered 2 new batteries.
They are welded on will post outcome when all done

Post Tue Aug 18, 2015 1:38 pm

cobbler2u wrote:just ordered 2 new batteries.

Have you tested the originals?

Post Tue Aug 18, 2015 8:42 pm

willnz wrote:
Brianmoooore wrote:
cobbler2u wrote:just ordered 2 new batteries.
Have you tested the originals?

Wealthy e30 owners would not be seen dead doing testing...

no just bought new

Post Tue Aug 18, 2015 10:10 pm

Do you even know which version of the SI board you have? The two types of battery are not interchangeable.

Post Wed Aug 19, 2015 9:20 am

now you tell me lol
what the differnce

Post Wed Aug 19, 2015 9:34 am

cobbler2u wrote:what the differnce

1.8 volts each.

Take out your cluster, remove the SI board, and identify which type of board you have. While you're at it, test the batteries.

Post Thu Aug 20, 2015 10:36 am

batteries changed still not working