Alright I had a bit of a problem today coming home from work. Cruising my temps seemed fine, 180-200*F according to my gauge. But once I came to a stopped idle my temps rose to nearly 250*F. Temps were over 100* today in Texas so I knew it may have gotten hotter but not that hot. Strange thing is at this 250* my fan doesn't kick on.

I am going to double check my sensor for when the fan should kick on but I think I have a few problems I need to figure out. I first need to check my mechanical gauge. I had just swapped out my new gauge last night, temps seemed great cruising to work this morning when it was 80* outside but I think this is my first step. Second I need to check the connection to my fan switch.

Could this be signs of a blown head gasket? I have a burped cooling system and I have no signs of water in the oil. (I know a head gasket can be blown in 3 ways)


Specs:
52mm GodSpeed Rad
Revlimiter's coolant reroute
90/10% water/coolant mixture.

 

has the car overheated before?
have you tried replacing the thermostat?
after it went to 250, did it go back down?
when you did the reroute, did you replace the thermostat?

 

Sounds to me like your fan took a boomboom. Try testing resistance off the fan motor with an ohm meter and report your results.

 

Car has never over heated, I am running without a thermostat.

What is a "normal" idle temperature?

I swapped out gauges back to my good ole AutoMeter, it idles 200-210, when it hits 210 the fan kicks on and cools it off down to 200 again. Testing my new gauge now with boiling water