Engine Overheating

Thanks for the reply.

Yes I did check the cooling fan it seems to be working properly, I added a little power steering fluid to the reservoir because it was low. The fan seems to increase in speed as the engine becomes warmer if that is indeed the way it is supposed to operate. Also how would I bleed the cooling system? Do I do it the way you mentioned in your post?

I bled the system as you suggested. There was indeed small and big air bubbles rising to the top of the radiator. After about 7 or 8 minutes though the coolant level suddenly drops and it starts to spit the coolant out of the top of the radiator. I immediately shut the car off. Also after further checking the top radiator hose was hot but the bottom radiator hose was not hot or even warm at all. I also found that the top heater core hose was hot and the bottom one was cool I checked because I was still getting no heat. What now?

So is the thermostat defective?

If I try this a few times and it doesnt work what does it mean then?

Could the heater core be bad and if so can it cause a car to overheat?

Replaced thermostat but still have the same problem. Also the car will not overheat while idling the temperature hand will remain at the half way point, but when the car is placed in drive and it begins to drive off the temperature rises and it will eventually oveheat.

Turns out it was a bad water pump causing all the problems. Thanks for your help.

I have had several problems with my engine overheating. We have changed the thermostat and water pump. It is still overheating. I understand that it has a hydrolic hose and the cooling fan is ran off of power steering fluid. The fan is moving, but not very fast(I can stop it with my hand) Is this normal? Could this be the problem? Do I need to replace the power steering pump or does it have a filter that can be changed? The power steering is fine and the fluid is full. We are having a hard time trying to figure out what is wrong.

Engine Cooling problem
1995 Lexus ES 300 6 cyl Two Wheel Drive Automatic 200k miles

This Vehicle has a new radiator and new thermostat, fan is working and kicks in gear when you speed up. The water pump is working. When you drive the car about 5 miles it overheats and you have to let it cool off. You can drive another 2 or 3 miles and you have to shut it down again. No antifreeze is lost. I have been told it may just need a radiator flush and new radiator cap and may just have an air pocket or the heads may be warped. Also told by Lexus it wouuld take a lot to warp heads on those engines.

Engine Cooling problem
1995 Lexus ES 300 6 cyl Front Wheel Drive Automatic

Hi, for the past 2 months I have been regularly filling coolant in the reservoir with no leaks and no temp gauge fluctuating whatsoever, basically holding on to repairs til I had time. Well, just the other day my temp guage went through the roof, past max, never smoked or anything like that from overheating which I was lucky to make it home. So, I filled coolant into rad cap while engine was cool all the way and had it idle while pouring more coolant, and filled reservoir aswell. I thought everything was good, now my problem. Coolant leaks, my temp guage gets so hot when I'm idling, it cools very little while I'm driving, I find it gets very hot quickly when im on the highway. I tried rushing to get home, and I heard you can blast the heat and it should help a little at least, when I did that, I was getting no heat at all! Just cold air. I replaced p/s pump with hydraulic cooling fan solenoid, pressure hose, p/s pipe, not even a week ago. I always replace my parts with new OEM parts, I dont like fixing one problem if its connected to another problem that will need fixing later, rather replace the whole system if need be. Please help.

I recently bought a 1995 Lexus es300 I was able to talk him down to 900 and its clean but the title is salvage and I knew it was going to have issues but it runs great. Just little fixes here and there. It recently overheated on an offramp on the freeway. There was slight smoking and I could not start the car. I then saw there was no coolant and low oil. I was able to get the car home after adding coolant but it overheats when I get to a long stop. No sign of any leaks at all but when I add coolant to the radiator and the reservoir soon the reservoir will be empty. I changed the oil and added more coolant and bleeded the radiator and levels seem fine. I just want to know could there be any bigger issues? I haven't driven it for longer than about 10 minutes since I changed the oil and the heat was climbing just not as high as before. The next morning I bleed the radiator some more and added a little bit more oil then drove it a few miles and the needle stays at the second notch. I don't want her to overheat anymore and I kinda don't want to run her till I know she won't

Engine Cooling problem
1995 Lexus ES 300 6 cyl Two Wheel Drive Automatic

having a problem overheating want to chang out the thermastat but having problems getting the housing off the block where thermastat is. Have removed one bolt from underneath and removed a nut from on top but it still seems to be holding on, is there a third bolt or nut holding the housing in place, its hard to see because there are so many other hoses and things in the way.