my 98 cobra wont quit running hot. can anyone give me some ideas. i have changed water pump, thermostat (5 times or so) radiator is new, hoses are not collapsing, pressurized radiator cap is new

 

ECT Sensor maybe?

Edit: Also is it always running hot, like if you just start it up in your driveway and let it sit, will it overheat or do you need to drive it for it to get hot?

 

ect sensor what is that... car runs hot only when driving. when it gets hot the heater all the way on and the fan wont cool it down to quick.. still learning ll the sensors mon the car

 

is it loosing any coolant? could be a head gasket if it is. do you get any heat out of the heater? is the fan working?

 

Engine coolant temp sensor, it changes resistance in response to the engine coolant temperature and decreases resistance as the surrounding temperature increases, providing a signal to the Powertrain Control Module (PCM) that indicates the engine coolant temperature.

 

Your rad fan might not be coming on also. My car had something like that and it turned out my fan wasnt kicking on warming the car up to much for the wind running through the rad couldnt cool it down. Also, are both the top and bottom rad hoses hot when u run the car? You might have a blockage somewhere not allowing the coolent to circulate through the rad itself.

Matthew

 

fan is hooked up to toggle fan works only looses fluid when it gets to hot that dont happen much no blockage in the hoses none are collapsing the heater works a little to good having to run it when the car gets hot with the fan on found a little info on the ect in the chiltons earlier

 

what about air bubbles in the water system