In Reply to: Help - Overheating posted by F. Carvalho on December 17, 1999 at 16:36:13:
: Today the battery of my '89 M3 was flat, so i asked my cousin to help me with his E30.
: After the car started I noticed that the rev counter wasn't working, but i thinked that could be a bad electrical connection.
: To charge the battery i left the car at idle for some 10 minutes. Then i saw a big cloud of water steam. I turned the engine off and open the bonnet. A lot of water came of by a small pipe.
: I think that the cause for this complete mess was some kind of electrical problem that didn't leave a water valve to the radiator to open. Is this possible?
: Did the engine suffer something? What could be the soluction?
: Thanks in advance
: Franco Carvalho
Assuming the water was flowing out of the coolant reservoir vent hose, I'd say the system was boiling over due to lack of sufficient pressure. Apparently the caps that BMW used for the M3's often have this problem. This COULD be your problem.