Car Overheating
05-12-13, 06:18 AM
#1
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Car Overheating
Bubbling in antifreeze reservoir and car overheating. Initially little antifreeze. I had antifreeze still car overheats. Any thoughts?
05-12-13, 02:32 PM
#3
What year is it? Does it have a fan clutch? If so I would suspect that well before a headgasket issue. The fan clutch is relatively cheap and also easy to change. The cooling system in these cars is very robust. I have my electric Aux. fan unplugged because it runs all the time. Last year in 105 plus weather in traffic with the AC on the temp needle didn't move.
05-12-13, 05:34 PM
#4
If it overheats while driving I would rule out the fan.
I also was able to cool down a couple overheating cars by turning the heat on.
I would start with the simple/cheap stuff first.
Hopefully it's not the head gasket.
You can do a compression test to check.
I also was able to cool down a couple overheating cars by turning the heat on.
I would start with the simple/cheap stuff first.
Hopefully it's not the head gasket.
You can do a compression test to check.
05-13-13, 11:08 AM
#5
make sure you properly bleed the coolant system. i found that air bubbles will cause overheating if not removed. sounded like you were low on coolant then proceeded to simply add coolant. there is more to it than just adding more fluid.
read:
http://www.lexls.com/tutorials/cooling/coolant.html
read:
http://www.lexls.com/tutorials/cooling/coolant.html
05-13-13, 11:21 PM
#6
Lexus Champion
the jiggler hole in the thermostat needs to be in the 12 o'clock position to properly bleed
what is the mileage? - if you have 200K+ or have not always used Toyota Red fluid, you may well need a radiator, they don't last forever, but first rule out what rick1987 and midwest2 mentioned: thermostat, radiator cap, and fan clutch
a good fan clutch will kick up quite an incredible breeze with the car hot sitting at idle, a worn out one won't
an exhaust gas sniffer stuck into the overflow tank will generally rule out a headgasket
thermostats are also a wear item, inexpensive, even from the dealership (where you should get it), so that and the radiator cap would get replaced right off, if it were mine and overheating.
to add to what timmy0tool said, make sure you are adding coolant in the right place, fill the radiator and then overflow reservoir to max line, but you also must top it off using the FILL BOLT - a large bolt that points down located right above the thermostat housing
what is the mileage? - if you have 200K+ or have not always used Toyota Red fluid, you may well need a radiator, they don't last forever, but first rule out what rick1987 and midwest2 mentioned: thermostat, radiator cap, and fan clutch
a good fan clutch will kick up quite an incredible breeze with the car hot sitting at idle, a worn out one won't
an exhaust gas sniffer stuck into the overflow tank will generally rule out a headgasket
thermostats are also a wear item, inexpensive, even from the dealership (where you should get it), so that and the radiator cap would get replaced right off, if it were mine and overheating.
make sure you properly bleed the coolant system. i found that air bubbles will cause overheating if not removed. sounded like you were low on coolant then proceeded to simply add coolant. there is more to it than just adding more fluid.
Last edited by LScowboyLS; 05-13-13 at 11:35 PM.
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