Originally Posted by
cozmeister
So when the control is set to hot the heater temperature goes colder along with the temp gauge going down while you're going along at 70mph...
How odd

It's almost like the coolant is being cooled too well.

You got it the faster I go the cooler it gets and now running out of time as winter starts next week, you can set your watch by it!!!!! I still think its a flow problem, still suspect the pump, trouble is you cant poke something in the pipes to see if the impellor has dropped off or what ever, only thing to do is take the pump off with that nice little dumpy hose to get off. Fix Or Repair Daily think I'm going to get a Bimmer M5 (E39) cos I hear such good things about them on here