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E30 M40 318i rev counter sticky
Posted: Fri Feb 05, 2010 11:37 am
by Colinofirth
My rev counter is sticky.
When I accellerate it moves normally to 3000rpm, then sticks, then jumps up to 4000. The problem is worse when the car is cold.
At idle it sits at 1200 (but I know that the car is doing 800 or so).
I have replaced the memory board batteries.
Any ideas>?
Posted: Tue Feb 09, 2010 1:32 pm
by Colinofirth
Anyone got any ideas please?
Should I replace the rev counter/have it rebuilt?
Re:
Posted: Tue Feb 09, 2010 8:37 pm
by Touring Whore
I've got the same problem (ish - revs to 2000 then holds there), so if I find anything out I'll let you know, and if someone else knows something I'll be able to find this thread easily now.
Posted: Wed Feb 10, 2010 11:52 am
by Colinofirth
Thanks mate!
When switched off, mine sits at about 300. So Im now thinking that it must be the rev counter itself.
Would be great to hear from anyone who has any ideas!
Re:
Posted: Wed Feb 10, 2010 9:44 pm
by Brianmoooore
The SI boards with lithium batteries produce these kind of effects.
I don't think the problem is battery related though. The only cure I've ever tried is simple replacement of the board.
Re:
Posted: Thu Feb 11, 2010 10:28 am
by Colinofirth
Thanks mate!
Is there anywhere you know which sells reconditioned service boards (with the new batteries)? Dont fancy changing the batteries again!
Re:
Posted: Thu Feb 11, 2010 8:57 pm
by Brianmoooore
BMW dealer!
Second hand boards with lithium batteries don't normally need new batteries.
Re:
Posted: Fri Feb 12, 2010 1:24 pm
by Colinofirth
cheers! Ok I'll try to get a second hand one!