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E39 temperature gauge over the middle

480 Views 7 Replies 8 Participants Last post by  caslvre39
Hi guys
today while cruising on the highway, my water temperature was below middle and after stucking in city traffic, it got on the middle.
After few minutes i had the opportunity to do some powerslides and the water temperature rises above middle… i s””t myself, turned the car off and on, and the gauge returned to middle.

Has this done any damage and what could have caused this?


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My car did this exact same thing on a 90 degree day, AC on full blast, while I was behind an Audi R8 V10 who gunned it and sped up about 100 yards ahead, I think it was due to me having some odd brand coolant in the car from who I bought it from, and an old, OE radiator that was 19 years old coupled by a soft-failing thermostat. I also **** myself!!!! Thankfully was able to sweve off the gridlock traffic and keep the car rolling so the air could cool it back down.

Now I have a new thermostat, the BMW Blue coolant, all new hoses and sensors and a CSF radiator! No problems since, but have yet to run with my new set up in 90 degree days, guess I will see if things improve this summer.
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