TIGGA

Also make sure that you dont have too much coolant in it. That year es300 gets very hot and water expands when heated causing steam from the over flow valve...

whats up people. I have a 92 es300 with a hydraulic fan. There is a wire that goes to a plug that is located on the top of the thermostat housing.. The wire is disconnected on my car. What is this wire and does if have anything to do with my fan spinning slow? tigga

Ruled out already... Only does it wit AC on.... on my way to texas but im going to check the cycling switch when i get back.

Where is the A/C Cycling Switch located?q

I stopped driving the lexus and then finally took it to the shop. the mechanic and i thought that it was the intake manifold gaskets. i waited a week before i got the gaskets but that same day one of my friends told me he worked on his friends ES300 that was doing the same thing and it was just a clogged radiator. so i figured i could do that myself so went to go pick up the car. that night i decided to drive it to the store( about half a mile down the road). It ran fine there and back so i sat in the yard with it running waiting for it to start overflowing.... Nothin happened. drove it around for five minutes.........nothing happened. drove it to my friends house 15 minutes away......... nothing happened. Its been running fine since I got it back. the only thing the mechanic did was test drive it. he said that he punched it a couple times and thats it. guess it just needed blowing out cus i never took it past 3500 rpm. but i now i have another problem...... I begins running hot whenever i its running at idle and the air conditioner is on. the rpms start jumping around a little too. it only does it at idle with the ac on. what could this be??

i have a 92 es300.. the idle starts jumpin arond from 600 to 900 when ever the air conditioner is on. It has a steady idle when the ac is off but idles kinda low at like 600 when warm and like 1200 when i first crank it up. Any suggestions on what this could be? where is the EGR valve and the IAC valve located on my car? I appreciate any and all suggestions....

Sorry bout the all caps.... I was hoping that it wasnt the head gaskets.. how much did it cost for you to get them put on? was there an noticeable amount of coolant in your oil?

JUST BOUGHT A 92 ES300. AFTER DRIVING THE CAR AND THE ENGINE GETS HOT, COOLANT BEGINS LEAKING FROM THE OVER FLOW TANK. AFTER THE ENGINE LOSES ENOUGH COOLANT, IT BEGINS TO OVER HEAT. THE HOSE ON THE CAP OF THE OVER FLOW TANK IS BROKEN. BEFORE THE HOSE ON THE CAP BROKE COMPLETELY, THE CAR WOULD BEGIN TO OVER HEAT WITH THE AIR CONDITIONER ON. COULD SOMEONE PLEASE HELP TROUBLESHOOT THIS PROBLEM.. I THOUGHT THAT IT COULD BE THE THERMOSTAT OR RADIATOR FLUSH NEEDED. IF SO, COULD U TELL ME HOW TO GET TO THE THERMOSTAT AND WHERE THE RADIATOR DRAIN PLUG IS LOCATED.. THANKS...........