My car over heats whats wrong?

Question

when i get on the highway it over heats when i have the AC. on but if im off the highway driving then the AC. don't blow cool air what could be the problem.

Answer 1

Try turning the heater on it will pull heat away from the engine.Sorry it will be uncomfortably hot. It could be the air compresser siezing up.

Answer 2

You are either low on coolant or your thermostat is sticking. take your car to a garage and get a professional to look at it

Answer 3

Thermostat is probably sticking.

Answer 4

thermostat and need to add Free on

Answer 5

Check to see if the cooling fan isn't turning on or maybe you can get the radiator flushed and have them check for a  leak. you can also have the compressor checked. Make sure the radiator has free-on.

Answer 6

needs new thermostat

Answer 7

overheating can be caused by many thing,s..first check your coolant level , next check water pump belt tension , have your cooling system [ including radiator cap] pressure tested,insure your cooling fan,s are operating properly,then check for thermostat operation...as far as your air conditioning system...you may need to add additional freon...good luck!