ok my 97 Cobra is overheating so I replaced the water pump and thermostat and flushed the radiator and it still overheats, but if I turn the A/C on (The fan is running all the time when the A/C is on) and also put it on heat it keeps it normal in tell it is sitting there. I don't think it could be the fan because the fan does work. what could be the problem?

 

The cobra has a reverse cooling system which can be a pain in the a$$ to fill. You need to take off the little screw on top on the tube that goes from cylinder head to cylinder head. If it is stuck like mine is stick a hose up the tube from the radiator sideand fill up the block/thermostat tube so when it gets hot the liquid actually hits the thermostat to open it.Then you have to let the engine heat up but dont drive it until you burp it a bunch, then let the engine cool down all the way and fill the reservoir up then continue burping.hope this helps

 

a buddy of mine had same problem...

 

Alright thanks, but my check engien light is on so I decided to get the codes read (I had thought it was just the o2 sensors so that is why I didn't think to much about it) and it was the fuel temperature sensor were is this located and do you thing this could be the problem? Thanks for your time