My 735/88's instrument panel locking up from intermittently, i.e. only the speedo works, but none of the other instruments (often the fuel, temp, rev and fuel consunption meter will lock-up in mid to low ranges) I have to switch off the ignition, wait for a while and start again. I seem to be more successful (perception?) if I start the car quickly, meaning, not to stop at the accessory only position - straight to crank.
The other related? problems:
The temp sensor often shows -37'o cel. usually happens if I use the horn or something like it.
The low beam does not come on straight away, (no problem with any other lights), it come on after a while though.
All the above problems are getting more frequent.
Any help will be appreciated.
dash cluster lights prob could be the infamous capacitor problem. But can be easily solved
http://shrubbery.student.utwente.nl/...dash_caps.html
Temp sensor -37 means that it is out of order. Either the sensor itself or the connection there.
http://shrubbery.student.utwente.nl/.../OBC_temp.html
Low beam problem: start your soldering machine. Common problem. Go to my page and then click on e32fixes.com and look for LKM and mustard relay fix/soldering
http://tridem.han-solo.net/auto/erich/auto.htm
It is also described on Bruno's page e34.net, see link on my website.