urgent help! Cooling system problems. Options

[KaneO]

I recently had my Celica with a 5sfe taken in to get a new radiator. problem being now is i think there is air traped inside. Tried Numerous times to bleed it.. what happens is when i take the car for a long drive and shut it down it dumps about a litter of coolant out the expansion tank and it also dose sometimes when the car is running.. Temp is normal according to the gauge and the car runs fine otherwise. I've taken it back to the mechanics and they failed to fix the problem. What's worse is i had plans to go on holidays and drive this car there. witch is less than a week away!

My bleeding procedure is the following so correct me if Im wrong.

Turn the heater to full hot. (fans off). Start the car with the rad cap off. using a small funnel wedged in there i top off the radiator. I then rev the car as it seems to help purge the air out. Wait for the bubbles to stop and shut the car off and refit the rad cap.

please help.

[Toyo6g]

I alredy change the radiator cap.... Now I think that the coolant sensor might be the problem!! Because it has that code! The fan relay os ok, the sensor in the rad is ok... because if i Unplugged the sensor the ac fan comes on... Where's this tempeture switch? I'm running the 5sfe!!! If you can put a picture will be better!!