Car overheats after driving on freeway for about a hour.

[anuragnayak]

Hi,

I am having the same problem. I have 1999 toyota camry. My car runs OK at city limit speeds and on freeways. But once it comes out of freeway it starts overheating. I took it to a autoshop and they first replaced water pump and timing belt. Thereafter they replaced radiator. I also suspect that it is losing coolant too because last time i have to fill coolant after about a 1000 miles while I normally used to do it after 3000 miles (regular maintenance). However when I took it back to the autoshop they could not find anything wrong. They told me that they kept the car running for about 4 hrs and the engine never overheated. I believe that they have tested it by keeping my car running for that long as my gas tank was lower by about 3-4 gallons. What do you think guys. Problem looks similar to your problem. How did you fixed it? Any suggestion are greatly appriciated.