overheating at 60 mph and above, SOLVED! Options

[xrav22]

Hi there My Celica has been running great and I went on a trip(75mph) to find my fans were not kicking on and my temp was rising above middle to the top of thermometer.
Pretty much had to drive 55 all the rest of the way with heater on). I have searched and read many topics but none seem solved. Idling and in town no problems.

Had seen bad fan switch( not the prob new) in fact it isn't hot enough to get the fans on.
Unplug fan switch to see fans run(did and they run)
Blown head gasket (tailpipe is not smoking at all, oil is fine)
Bad thermostat (did replace once before)
Bad water pump (I did not replace, don't know how old it is) car has 200000
Tilted car air out/ new anti freeze
New radiator (6months old) new cap

I am warming it up to watch it and see if it does anything but it doesn't get too warm just sitting there. The gauge goes to the middle at idle.

has anyone solved this problem or what should I do next funds are avail for the Celica
Thx in advance
Edited

This post has been edited by xrav22: Jan 11, 2015 - 7:49 PM

[xrav22]

I am thinking that an open thermostat would just keep the car at 130 degrees that is what happened last time when I changed it.
Now stuck closed mabey, but I was hoping someone has solved this problem before.
Thx

[Lamont]

I am thinking that an open thermostat would just keep the car at 130 degrees that is what happened last time when I changed it.
Now stuck closed mabey, but I was hoping someone has solved this problem before.
Thx

I think because it's not overheating under low load you may have a blown head gasket. I had something similar on my 5SFE motor when I first purchased my 6th gen. If I kept my foot out of the throttle it would be fine, but if I gave it full throttle for any extended time my temps would rise steadily. When I took the head off you could see just a very small section of the head gasket was allowing exhaust gas to leak into a coolant passage. This would superheat the coolant and make it overheat quickly if you really got on the gas. You can take your car to a shop and have them test for fluorocarbons in the coolant. If they find fluorocarbon you have a blown head gasket.