G'Day Guys I've got a 93 2.2 ltr Camry. When the engine is cold it starts and runs like a bird, but If I drive it and turn it off when it's warmed up it refuses to start untill it cools down. I took it to my mechanic and he replaced the heat sensor. It went fine for a couple of days and ther original problem has returned. It has never overheated and I put new fluid in the radiator. Any advice would be greatly appreciated. Regards Carl