I am having problems with the water temperature warning light (red LED) on my '91 gti cabriolet. It flashes at random points and appears to be a fault with either the temperature sensor/wiring or level sensor/wiring as I have checked the water level which is okay and the temperature reading on the mfa and water temperture indicator are both giving reasonable readings of 80-95 degrees and mid way on the needle indicator.
I am looking for any information on where the temperture sensor is and wiring etc and also any help on what else could be wrong.