Jumpy Rev Counter!!

[Kedge]

Hi folks.

The rev counter in my 325i is jumping all over the place and doesn't seem to match the end revs at all, also the MPG swinger doesn't seem to work.

I have swapped the clocks for another set but this hasn't sorted it.

Can any of you shed some light on this please?

Cheers
Dave

[Kedge]

Also forgot to say the fuel gauge isn't working as well

[willisssteve0]

oo i had the same problem on my 318is found that it was just a nakered fuse check your fuses to see how they look if not not sure hope it helps

[johnl320]

Si board batteries may have given up the ghost. I'd try another set of clocks go through the drama of changing them.

john

[Kedge]

Don't the SI board batteries just control the servicelights or are they more involved than that? What kind of battery do i need?

Dave

[gingebmx]

Ive got them same problem, this happend after the battery had been disconnected for a day.
So it sounds likely that its something to do with batteries in the dash.
Let me know if you sort this and Ill do the same
Goodluck!