Clausz Posted August 26, 2012 Share Posted August 26, 2012 Hi All I hope you have some ideas to help me. I'm experiencing that me Supra Single turbo gets too hot. When taking some long pulls on boost, the stock dials goes way above half, it's nearing the red area. What I did to try getting the temp down: Changed cooling liquid twice. I lifted the front up, when changed it. Installed TRD thermostat. Changed radiator fan clutch. I got hold of a TRD radiator cap, but it didn't fit, as the depth was to big on it. But if the radiator cap was bad, wouldn't it have pushed a lot of liquid in the expansion tank? I haven't removed the fan surroundings. Any ideas of what it could be? Wrong resistance in stock temp sensor? Bad stock radiator? ?? Quote Link to comment Share on other sites More sharing options...
Camry5Sgte Posted August 26, 2012 Share Posted August 26, 2012 How much fluid did you put back into the system when you refilled it? Also, how far are you driving before experiencing the high temps? Was anything else done to the car prior to your first experience with the high temps? Quote Link to comment Share on other sites More sharing options...
Clausz Posted August 26, 2012 Author Share Posted August 26, 2012 I filled it with as much as I took out. If I drive normally, it won't get hot. Only if I take some high boost pulls. Nothing done prior to the high temps. How much fluid did you put back into the system when you refilled it? Also, how far are you driving before experiencing the high temps? Was anything else done to the car prior to your first experience with the high temps? Quote Link to comment Share on other sites More sharing options...
Rinus Posted August 26, 2012 Share Posted August 26, 2012 Old blocked radiator? Bad waterpump? Quote Link to comment Share on other sites More sharing options...
Clausz Posted August 26, 2012 Author Share Posted August 26, 2012 Maybe I should change the radiator? Have anyone ever heard of a bad pump, other than broken bearings in it? Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 27, 2012 Share Posted August 27, 2012 Head gasket starting to go? Quote Link to comment Share on other sites More sharing options...
Digsy Posted August 27, 2012 Share Posted August 27, 2012 If the system isn't completely full then the coolant might not expand enough to push any coolant out. Does the coolant level in the expansion tank rise and fall when the engine is hot / cold? Is the radiator full if you take the rad cap off (when cold)? Changing the radiator cap won't reduce the temperature. It will only increase the temperature at which the coolant starts to boil. Assuming the head gasket hasn't gone (which would hopefully show up some other symptoms like execcive pressure in the coolant system) the a high top hose temperature will mean one of the following: 1) Not enough coolant flow for the amoung of engine power (knackered pump, something blocked or an airlock). Its unlikely to be the pump but you could check it is rotating freely and not leaking excessively. Pop the radiator hoses off and check for sludge, flush the system (should be a how to on here somewhere). Bleed the system by running the heater full on, squashing hoses, etc. 2) Not enough coolant in the system. Make sure the system is full after bleeding. Top up via the expansion tank when hot and allowing to cool, then repeat until the coolant level in the tank is normal when the engine is cool. 3) Not enough heat being rejected from the radiator (blocked rad). Run the engine until warm then check the rad for cold spots. Do you know what the opening temperature is for the TRD thermostat? Quote Link to comment Share on other sites More sharing options...
Clausz Posted September 11, 2012 Author Share Posted September 11, 2012 I changed the radiator after I tried changing the cap and the thermostat. I solved the problem, thanks for all the help. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted September 11, 2012 Share Posted September 11, 2012 Id get a properly graduated temp gauge first, the stock one isnt the most accurate thing in the world. Quote Link to comment Share on other sites More sharing options...
Clausz Posted September 11, 2012 Author Share Posted September 11, 2012 I have plx gauges installed, will add an extra temp sensor in an whifbitz top rad pipe:) Quote Link to comment Share on other sites More sharing options...
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