I was having my temp gauge swinging a couple of days ago and changed the thermostat and it stopped.I sold/removed my turbo kit and was driving to bmp and it started again.It only does it time to time and never goes all the way to h.I'm guessin either a huge ass air bubble or bad sender.Btw it will rise quickly when i turn my high beams on(WTF?) so that there leaves me stumped.
thanx in advance

 

bad sensor maybe, the turbo kit shouldnt have too much of an affect on the engine temp during regular driving. and does it do it when ur driving or when youre stopped or both?

 

I bled the shit out of it and it stopped.I guess a really large air bubble