[desertnana]

My 03 runs hot only when the outside temp is 85 and above AND only when I drive thru my daily 15 mile mountain pass, (i commute daily) I can go all fall winter and early spring with no problem, once I get past grade on the hill temp goes back to normal, any tips ?

 

[POPIMPIN CUSTOMS I.N.C]

coolant flush and maybe a new thermostadt install

 

[Danny_Boy]

I would also suggest maybe a lower temp thermostat and maybe a PCM reprogram.