My 99 GS300 is Over Heating....................
07-26-06, 05:40 AM
#31
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Originally Posted by salimshah
With AC on do both fans turn on?
Salim
Salim
Also, the coolant was always changed by a dealer, so I'm not sure what kind of water they used.
07-26-06, 07:18 AM
#33
does anyone know how to properly purge air out of the system(bleed) when you change out the radiator fluid? as everyone is reading, air in the system can cause overheating.
let us know when you find out what's going on with your overheating problem.
this may be a good time to get the timing belt and waterpump changed out since it's been over 8 years.
let us know when you find out what's going on with your overheating problem.
this may be a good time to get the timing belt and waterpump changed out since it's been over 8 years.
07-26-06, 01:53 PM
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Originally Posted by RA40
Also check for debris build up between the radiator and A/C condensor. An old thread here showed one GS owner who's looked like a bird's nest was between the two.
Salimshah also mentioned cleaning the radiator, but stupid me
- I was looking at the condensor! - I thought I was looking at the radiator. Getting at it was the hard part. I could only get my hose in there and spray it clean. As soon as I looked in there, I knew that was my problem! - Here's the deal - I live in an area where there are hundreds of Cottonwood trees. When they seed in the spring they produce tiny little cotton seeds with a cotton fiber wisp attached. They are small enough to penetrate the condensor and get stuck on the front of the radiator. When I looked at the radiator, it was like a woven cloth of cotton fibers was covering up the entire front surface of the radiator.
Oh, and for anyone that does not know how to get at the front surface of the radiator (I did not - I had to search these forums for a while.) There are 2 clamps that hold the top of the radiator. I removed the Plastic Air intake first (1 bolt) and then removed the 2 nuts holding the clamps on the radiator. I was able to push the radiator back towards the engine about 2-3 inches - enough to get a hose in there. ) - There may be a better way, I but I could not see one.
Thanks for everyone's help and I hope this might help someone else that is having this same problem
Last edited by Cut-Throat; 07-26-06 at 02:17 PM.
07-27-06, 08:39 AM
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Originally Posted by slickgt1
That is just unbeleivable. You know this is the first time I have ever seen anyone have a car oveheat because of this. I guess that cotten stuff can get in anywhere. Glad you fixed it.
https://www.clublexus.com/forums/sho...ensor+radiator
Last edited by Cut-Throat; 07-27-06 at 08:42 AM.
07-30-06, 05:41 PM
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Well, I thought I'd clean out my wife's ES300 as she probably has a lot of Cottonwood seeds in here radiator as well. I did post this over at the ES300 forum, but not as many folks over there. Got any idea how I would get at the Condensor/Radiator space on this 2003 ES300?
11-09-17, 08:03 PM
#42
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What's up my 99 Lexus Gs300 is overheating I replaced
water pump & timing belt
coolant temp sensor
thermostat from autozone thinking going OEM
REPLACED radiator fans work properly
currently blowing cold air, car doesn't hold antifreeze in Reservoir...always leaks
any antifreeze...my mechanic that replaced my waterpump is saying it's leaking underneath.
I also got another waterpump.
my biggest concern now is should I just do a motor swap, my car has 195k,
ive put a lot of $ thus far...
PLEASE HELP
water pump & timing belt
coolant temp sensor
thermostat from autozone thinking going OEM
REPLACED radiator fans work properly
currently blowing cold air, car doesn't hold antifreeze in Reservoir...always leaks
any antifreeze...my mechanic that replaced my waterpump is saying it's leaking underneath.
I also got another waterpump.
my biggest concern now is should I just do a motor swap, my car has 195k,
ive put a lot of $ thus far...
PLEASE HELP
04-24-18, 07:03 AM
#44
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Most likely you have a problem with your thermostat....
Runing your car at high speeds with or without a/c get you at higher RPM's. Higher speed=higher engine temp. Thermostat reaching it's critical temp. must allow (by opening) for coolant flow thru radiator causing its temp. cool down and than return to engine block with lower temp.
Same thing in slow traffic....., thermostat being bearly open, there is no flow , no flow=no cooling
Running fans won't help coz there is not sufficient amount of hot coolant coming thru radiator. It might be just enough to activate fan sensor.
Bad thermostat is not always operating in it's full range, that means:
1.It may be stuck at fully open positon, allowing for constant cooling
2.It may be stuck at fully close position, (worst possible) causing overheating at any speeds, any wheater conditions....
3.It may work properly in lower temp. range but not respond at all at higher temp.
Diagnose:
Locate thermostat, if coolant piping coming out of engine right after thermostat is fairly hot or if you're able to hold it for few seconds while engine is overheating, that is a thermostat
I belive #3 is a right diagnose for your car, good luck finding problem
Runing your car at high speeds with or without a/c get you at higher RPM's. Higher speed=higher engine temp. Thermostat reaching it's critical temp. must allow (by opening) for coolant flow thru radiator causing its temp. cool down and than return to engine block with lower temp.
Same thing in slow traffic....., thermostat being bearly open, there is no flow , no flow=no cooling
Running fans won't help coz there is not sufficient amount of hot coolant coming thru radiator. It might be just enough to activate fan sensor.
Bad thermostat is not always operating in it's full range, that means:
1.It may be stuck at fully open positon, allowing for constant cooling
2.It may be stuck at fully close position, (worst possible) causing overheating at any speeds, any wheater conditions....
3.It may work properly in lower temp. range but not respond at all at higher temp.
Diagnose:
Locate thermostat, if coolant piping coming out of engine right after thermostat is fairly hot or if you're able to hold it for few seconds while engine is overheating, that is a thermostat
I belive #3 is a right diagnose for your car, good luck finding problem
04-24-18, 08:44 AM
#45
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What's up my 99 Lexus Gs300 is overheating I replaced
water pump & timing belt
coolant temp sensor
thermostat from autozone thinking going OEM
REPLACED radiator fans work properly
currently blowing cold air, car doesn't hold antifreeze in Reservoir...always leaks
any antifreeze...my mechanic that replaced my waterpump is saying it's leaking underneath.
I also got another waterpump.
my biggest concern now is should I just do a motor swap, my car has 195k,
ive put a lot of $ thus far...
PLEASE HELP
water pump & timing belt
coolant temp sensor
thermostat from autozone thinking going OEM
REPLACED radiator fans work properly
currently blowing cold air, car doesn't hold antifreeze in Reservoir...always leaks
any antifreeze...my mechanic that replaced my waterpump is saying it's leaking underneath.
I also got another waterpump.
my biggest concern now is should I just do a motor swap, my car has 195k,
ive put a lot of $ thus far...
PLEASE HELP
You invested a lot of money, so it's worth to change engine or change gasket. My mechanic is my almost friend and i saw how it's done... it's work only for professionals, each screw must be installed according manual and etc, proper chemistry used and so on. So good luck . It's nothing surprising about such a failure , car is almost 20 year old, gasket is weakest part in engine .
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t0nyt00nz
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03-21-13 12:41 AM
2000, 300, 99, erong, gs, gs300, gs400, guage, high, i30, infiniti, lexus, overheating, temperature, tempereture, thermostat
