Doubt this is the engine, probably something else - e.g. sunroof motor.
OTOH it could be a latched condition e.g. due to boiling dry, for which BMW
want you to take the car to a dealer to check it out for damage.
Thanks Al, Yes an auto electrician at a independent garage have check
that and the temp. gauge at the dashboard is responding to it. Then he
recommend changing the sensor besides it (color blue), but after
changing it with a new one, still the light is on. From there we stop.
There are 2 temperature sensors, I just had a guess at which one it might
be! The other sensor is in the block somewhere - Sorry can't be more
specific as my E30 has been off the road for a few months and I don't have
time to check out the other location:-(
This really does sound like a trivial electrical fault, don't give up. My
E30 has never given a sensible temperature reading in the 10 years that
I've owned it. I've had the dial off the scale, spent ages bleeding the
cooling system (actually really easy when you know how!) and still my temp
gauge is random. I guess it's some failed componemt in the dash. My view is
that it's still running after years of supposed 'problems', so WTF :-)
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