I recently bought a 94 GS300 and am having some problems with it running really hot! I've been doing some other work on the car so I really haven't driven it much but it gets really hot when it idles.
So far I drained all of the coolant out of the block and filled it up with fresh coolant only to have it do the same thing. So I then drained all of the new coolant out and removed the thermostat and filled the car back up with straight water. I back filled the block until I had water coming out of the radiator and then started the car up and burped the radiator hoses until I couldn't get any bubbles to come out. Checked and there is definitely flow in the coolant from the water pump. The temp gage never gets much past 1/2 way, but the engine is way too hot. When I shut it off it bubbles and gurgles for quite a while until it has cooled off. The upper radiator hose is rock hard and I'm afraid of it bursting. I'm not quite sure what to check next as I thought the problem was a bad thermostat.
hey man i had that same problem and it was the rad cap the spring was broken and it would just keep on gurgleing got a new one and it fixed it hope that can help you
1994 Gs300 Overheating
in 93 - 05 Lexus GS300 / GS400 / GS430
Posted
hey man i had that same problem and it was the rad cap the spring was broken and it would just keep on gurgleing got a new one and it fixed it hope that can help you