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Re: cooling fan does not come on
Probably 198-210F, or anywhere in between. If your in a cold climate right now It may not even need the fan to cool the return yet. Keep an eye on gauge just in case, and if it climbs too high for your liking, then have it checked. Try turning on defrost & see what comes on, if AC has separate fan , it should come on, if not the other should.
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I'm fairly sure what you described is normal operation.
The thermostat opens at 195-197 degrees and the radiator fan kicks on around 225 degrees. So the normal range is between those numbers. And the coolant tank would rise when you turn the engine off because it stops flowing.
As long as the temp stays under 220 and you are not losing coolant you should be ok.
is the cooling fan cutting in ? run the engine whilst stationary with the hood up , give it a little gas 2000revs and wait for the temp gauge to rise ,the cooling fan should be heard cutting in , and off again once cooled the engine temp down ,this may take 10-15 mins but you have to be sure the fan is cutting in or you may cook the engine
How long does it run after shut off?Does it shut off at all or just run forever? If it ends up shuting off at some point after shut off, then I wouldnt worry to much bout it. The fan will run until the temperature sensor tells the computer that your engine is cool enough whether car is off or not. If it never shuts off then that'd be different : ) can honestly say I haven't seen that b4 but I'd say start at the temp sensor chk for voltage readings and see if they are within specs for your vehicle. Maybe sending constant signal to computer. Hope this helps you out.
Using your tatco code reader, select current data (real-time data) and select engine coolant temp sensor (ECT). Run engine to operating temperature (A/C off). Monitor the temp reading - when the temp reaches approx 204 deg farenheit, the fans should kick on, after the temp drops to approx 198 deg farenheit, the fans should turn off. The fans are controled by the ECM (Engine Control Module). The ECM controls the cooling fan relays.
No that temperature is not too hot for your engine. The system is apperntly kicking in at 240 from what your saying and then it starts to cool itself down. One of your fans may be going bad if you keep blowing fuses.
Cooling fans ( on radiator ) only come on when the engine reaches a certain (hot) temprature. There is a temp sensor threaded into the radiator end reservoir that switches a relay off and on that runs the fans. Either the temp sensor or the relay is probably bad. Normally , those fans will not be on if the car is moving , the air flow from just driving is sufficient to cool the rad. If you stopped and idled for a while , eventually the rad would heat up enough for the fans to come on.
are you sure the cooling fans are working? Is the coolant temp gauge telling the truth? have you lifted the hood and heard the coolant bubbling into the overflow? Or heard the tinging sound of a red hot engine? If he did a liquid test with the dye,and it changed colors it should have changed very fast, Another thing to think about if he was to take the fan belt off,and pull the thermostat housing off,and removed the thermostat,Now pour coolant into the thermostat hole to almost the top,Now start the car and see which side the bubbles come from,left or right,that will be the gasket that is leaking not both.