Im having a issue with my ride. It keeps overheating, it only over heats when Im on the highway, and during long trips around the city. Ive had the radiator flushed. Ive taken it to the shop, and anything that could make it overheat has been checked. Does anyone have a clue what it could be? I took it to the shop yesterday and they still don't know why its overheating. At one point, it wouldn't overheat if the heat was blasting..now thats not working too good.

Is the cooling fan working?

When I took it to the shop the 1st time, the fans were running

If the heat isnt working properly. Are you sure they flushed and also bled the air out of the system?

Air bubbles are not your friend. Maybe the heater core wasn't bled? Try idling the car at normal temp with the radiator cap off see if the fluid goes down. If it does you have air in the system still and add fluid as the thermostat opens and closes air will slowly come out the system.

- amyn

No, my heat is working, the air is working too...I meant, that when I have my heat on full blast, the engine doesn't overheat, if I turn it off it does.

No, my heat is working, the air is working too...I meant, that when I have my heat on full blast, the engine doesn't overheat, if I turn it off it does.

burp the air out of it.

Make sure antifreeze and oil dont look mixed.

Might have a sticking thermostat as well..

Dont 100% trust the shop either ..

Okay, I got word from the mechanic...water pump was going out and the timing needed to be changed!!

Thanks guys for your insite!!