dirtykoala

i have an AP2. I waited for the fan to turn on for quite a while and it didnt. both turned on when i turned the AC on though. the dealer said that was normal. maybe try turning on your AC and see if that helps at all. careful though, the AC will make the engine warmer.

have you tried changing the water pump yet? i would lean towards water pump.

Reallyquietman

Thanks for the quick response, I have noticed no leaks from the waterpump, I was told that in some cases the waterpump may leak long after the engine has been on, so perhaps it leaked when I was at work or asleep... anyways, I'm heading in that direction since it's not the headgasket... I'm going to try using the AC to atleast see if the fan will turn on. Thanks again!

dirtykoala

The water pump doesn't have to leak to be bad.

ncboy7o4

mine did the same thing while driving down the freeway, coolant just boiling out of the reservoir, i replaced the radiator cap first because it was the easiest, inexpensive and fortunately that solved the problem. hopes this helps you out

SLracer

I'm surprised nobody has mentioned the temp sensor. If its gone bad your fan would just never turn on leading to your overtemp. The fluid would be low after you boiled the fluid, first off since all that vapor coming out is fluid in vapor form and second once the fluid cools down it occupys less space.

TookayS2K

Or your thermostat is bad.