ok well let me give u the run down on my car. Its a 90 integra gs. it overheated one day and i took it to 3 shops that day. they all ran tests on the fans,water pump and head gaskets and they were good. so i brought a new thermastat and it still over heats. it always has water in the radiator and the radiator is only 2 years old. sometimes when it overheats it will cool it self off while idle and sometime when it idle it over heats and i rev the engine and that cools it off. i even rigged it so the fan is always on and it still get to hot. this is driving me insane. all the hoses seem fine and there is not leak that i can see...i mean there is not puddle under my car at all. anyone have any haave any ideas?

 

water pump?

 

well 3 shops said it checked out ok....replace it anyway?

 

anything will suggestion will help my out...just thinking of selling it....it becoming a hassle

 

sounds like the same problem i had with my 89.I did all the things you did and still overheated.I ended up replacing the radiator and now its fine.Try flushing your cooling system.maybe?

 

are you sure you are overheating? what happened to make you think it was overheating.. the temp gauge? or steam coming from the cap?, etc...? lil more information would be helpful

 

Try checking the sending unit for the temp sensor. My buddys gsr engine was doing the same thing so we checked out the sending unit probe and it was busted. But before we did the check he hooked up a thermometer to measure the under the hood temp. and it read fine while the guage in the cluster showed the car overheating.

 

yeah the gauge was saying overheating so i thought it was but thanks for all your input guys. i am off to test out everyone advice...wish me luck

 

If there isn't something wrong with the gauge, almost seems as if something is plugged up.

 

same thing happen to my friends car, change the water pump, thermostat.and still over heats... i told him to just replace the radiator with a new one and ta da! never over heated again..EVER! hope this helps...

 

leaving the radiator fan on at highway speeds will cause turbulence and CAN cause overheating. your coolant temp sensor might be faulty??