My girlfriends notch is doing the exact same thing. Been lettin her drive it w/o thermostat to get by for now. Burped the cooland half a million times. Im fed up, so I am pullin the heads friday. This better fix it. Ive tried everything that has been mentioned in this post, no good in my case. 230 degrees and no heat, top off coolant and runs great 4 a couple of days then 230 degrees again. Good luck fixing yours!
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