jstnlyrr Posted July 17, 2008 Share Posted July 17, 2008 EVERYTIME I TURN ON MY AC THE CAR WANTS TO OVERHEAT BUT WHEN I TURN IT OFF THE TEMP GOES BACK TO NORMAL BUT IT TENDS TO BLOW HOT AIR WHEN THE TEMP RISES BUT I TURN IT OFF ITS NORMAL BUT THERE IS A CEL LIGHT ON BUT THE CAR RUNS GOOD OTHER THAN THAT NO LEAKS OR ANYTHING PLEASE SOMEONE HELP WITH THIS ISSUE Quote Link to comment Share on other sites More sharing options...
kingjack133 Posted July 18, 2008 Share Posted July 18, 2008 There are quite a few posts with the overheating problem.....read them......my first hunch might be that you have the old airlock goin on. Check it out at the rad shop, its important to know your coolant situation as a starting point . Good luck Quote Link to comment Share on other sites More sharing options...
JENunnez Posted July 18, 2008 Share Posted July 18, 2008 Your electric radiator fan is not working. When you turn A/C on, the fan has to go to high. Check that first. Quote Link to comment Share on other sites More sharing options...
jstnlyrr Posted July 18, 2008 Author Share Posted July 18, 2008 wat is the old airlock Quote Link to comment Share on other sites More sharing options...
kingjack133 Posted July 18, 2008 Share Posted July 18, 2008 You don t have an electric rad fan.....its hydraulic. Yes check the fan relays, a good idea and a cheap fix. Someone who knows the motor should have no problem with this. Or, with the hood open watch for the fan to speed up is what i might try. The airlock is a problem i had, as you read in another post, and its a simple and cheap fix- if thats what it is. (air trapped in the cooling system, i suspect is the cause of 92 es300 overheating probs, but thats my opinion) Quote Link to comment Share on other sites More sharing options...
JENunnez Posted July 18, 2008 Share Posted July 18, 2008 I,m not familiar with this car, sorry. But I'm sure it's something to do with your engine fan and A/C control. Quote Link to comment Share on other sites More sharing options...
jstnlyrr Posted July 18, 2008 Author Share Posted July 18, 2008 so i should check the relays and should i flush out the rad to let the air out Quote Link to comment Share on other sites More sharing options...
kingjack133 Posted July 19, 2008 Share Posted July 19, 2008 find a mechanic who knows lexus/toyotas and let him run these basic diagnostics......sounds like you don t have experience.....or if you have a knowledgeble friend , maybe they can help you......and, get a manuel or how to guide. Quote Link to comment Share on other sites More sharing options...
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