the temp gauge...my car does it sometimes. I think its either air in the system or a faulty temp battery connection of some sort. Try opening the radiator when still warm(not hot) and then put some more water. It fixed my prob.
long trips=the best
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We all get the urge...Saturday early morning...nothing to do till noon...

BMW FTW

The aural sensations of 1st gear WOT
**CGM **(Certified Garage Mechanic)