I know there are allways threads like this but,
MY rev counter has never worked since i got the car nore has the mpg...
I have taken the clocks apart and replaced the battersy with new 1's on the board etc
all the serivce light indicators etc all work fine when u turn ignition on.
every thing works fine apart from speedo is miles out(could be the wheels) and the rev counter just wont work..
its driving me absolutley mad.
Rev conuter issues
Moderator: martauto
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
There are always threads like this. Ones where we're expected to guess the age and model of car!!!!
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
All as standard, or has the engine loom and/or management been changed for later stuff?
Does the boot light work?
Does the boot light work?
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Sounds like fuse 27 has blown. As well as feeding the interior and boot lights, plus a few other things, it also provides an essential supply for the instrument cluster - the charging current for the SI board batteries. Without this current, the batteries may have died and need to be replaced.
Do the service LEDs work properly?
Just noticed that you've already replaced them. If you didn't charge them before fitting, it may still be the problem.
Alternatively, the signal feeds for the tacho and fuel rate on your early loom, are fed from the engine ECU to the instrument cluster via a small three pin plug and socket up above the pedal area, rather than going through the main engine loom plug and socket as on most E30s. Check that this connector is plugged together properly.
The speedo fault is probably nothing to do with the above, and is likely to be the common internal failure of the wire to the road speed sensor on the diff. Cure for this is to replace the last 300mm of wire, complete with plug.
Do the service LEDs work properly?
Just noticed that you've already replaced them. If you didn't charge them before fitting, it may still be the problem.
Alternatively, the signal feeds for the tacho and fuel rate on your early loom, are fed from the engine ECU to the instrument cluster via a small three pin plug and socket up above the pedal area, rather than going through the main engine loom plug and socket as on most E30s. Check that this connector is plugged together properly.
The speedo fault is probably nothing to do with the above, and is likely to be the common internal failure of the wire to the road speed sensor on the diff. Cure for this is to replace the last 300mm of wire, complete with plug.
Thanks for your help and taking your time to reply will get these checked out!
the service indicator lights allways worked on ignition even on the old batterys.
none of the plastic under the dash is there so i can see the ecu and all the wiering i will have a look to see if i can find a 3 pin plugs.
i know there is a plug with nothing plugged into it but i think on the under dash panel there is something that it plugs into.
the service indicator lights allways worked on ignition even on the old batterys.
none of the plastic under the dash is there so i can see the ecu and all the wiering i will have a look to see if i can find a 3 pin plugs.
i know there is a plug with nothing plugged into it but i think on the under dash panel there is something that it plugs into.
Have you got another binnacle you can try?
The rev counter on my track car has never worked either, although I have been told this is quite common and often because of something coming off the back of the tacho itself? Anyway, worth a look I guess.
The rev counter on my track car has never worked either, although I have been told this is quite common and often because of something coming off the back of the tacho itself? Anyway, worth a look I guess.
Rally Prep - Cornwall
ARM BMW & Motorsport
2002
E30 M3 2.3 - Alpha N, C/F airbox etc
ARM BMW & Motorsport
2002
E30 M3 2.3 - Alpha N, C/F airbox etc
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Is this the same car as above, under new ownership??ae86levin wrote:i bought this same problem still, can anyone help. searched the wiki pages but i cant get my head around the diagrams. the map lights dont work and there are no interior lights. dash lights do work.
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
What black wire? Where is it, and is it part of the engine loom where it comes through the bulkhead to the ECU, or is it part of the body looms?ae86levin wrote:from the two plugs there is power to them apart from the black wire.
Tacho wire is plain black!
