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Sounds like you have air in the coolant system.. did you bleed the system after you replaced all this?.. did you replace the thermostat? You might add a comment about why you replaced these things .. and how you know they were failing>
Three possible causes: (1) The high speed circuit in the radiator fan motor could be defective. (2) The high speed fan relay Could be defective. (3) It possibly may have a wiring issue. I've seen at times where you can wiggle the fan motor connector that's mounted on the fan shroud and the motor will kick on. If this is the case then replace the hole assembly which is a motor and shroud assembly. Hope this helps and have an awesome day.
IF COOLANT FAN FUSE AND RELAY OKAY.HOT WIRE COOLANT FAN TO SEE IF FAN MOTOR OKAY.IF FAN MOTOR OKAY.THE ENGINE COOLANT TEMPERATURE SENSOR MORE LIKELY BAD.THE ENGINE COOLANT SENSOR WHEN ENGINE COOLANT GETS HOT IT CAUSES ENGINE COOLANT TEMPERATURE RESISTANCE TO DECREASE CAUSE COMPLETE CIRCUIT IN WHICH POWER FROM PCM TO ECT SENSOR WILL SENT POWER TO COOLANT FAN RELAY THEN CAUSE COOLANT FAN TO TURN ON. HAVE ECT SENSOR OR ENGINE COOLANT TEMPERATURE SENSOR CHECK USING CODE SCANNER TO MAKE SURE ITS WORKING BEFORE SPENDING EXCESS MONEY.
bobblevinsbu, You need to check the fuses first, especially the maxi fuses in the engine compartment. If these are good then try switching the fan relay with the horn relay. They are usually the same number so it is okay to do this. When you do this try the horn and if it works then the relay is fine. You should switch them back again and try the horn once again. If the relay and fuses are okay them disconnect the fans and apply direct power to them from the battery using jumper wires. If the fans operate while using this method then they are fine. If not then the fans need to be replaced. Finally the PCM gets a signal fron the engine coolant temperature (ECT)sensor located near the upper radiator hose where it connects to the engine. When this signal is recieved by the computer it will command the fans to turn on. If this is faulty then it needs to be replaced. First try to jiggle the wires going to the sensor when the engine is hot and you think the fans should be on. If you have a tester that will test resistance then probe the sensor pins and check what the readings are when the engine is hot and cold. There should be a significant difference. If not then the sensor needs to be replaced. Also try turning the AC on (engine running) and check the fans, they should be working when you do this. Good luck with this.
check electric fans to see if they are coming on. and also make sure there is enough anti freeze in system. if fans do not work proper, check the fan relay if relay is ok. then the problem is either a bad wire or the fans itself are bad. to check fans-- take wire connector off of fans, then run a wire from positive on battery to positive on fan, ground other wire if need be. if fans do not run then thats your problem.
Yes, cause that sensor operates the electric cooling fans by the radiator, if those fans or fan don't come on, the radiator can't cool down as quick and causes the engine to run hotter.
CHANGE THERMOSTAT AND RADIATOR PRESSURE CAP.CHECK COOLANT LEVEL.MAKE SURE YOU HAVE 50/50 ANTIFREEZE AND WATER.MAKE SURE COOLING FANS COMING ON WHEN ENGINE REACHES 190 DEGREES.TO SEE IF COOLANT FANS RUNNING TURN ON CAR AIR CONDITIONER TO SEE IF FANS RUN IF NOT CHECK COOLING FANS FUSES.IF FUSES GOOD I AM LOOKING AT A FAULTY COOLANT TEMPERATURE SENSOR.IF ALL IS GOOD.NO LEAKS AT RADIATOR HOSES + HEATERS HOSES. NO LEAKS AT WATER PUMP WEEP HOLE OR GASKET.NO LEAKS AT RADIATOR.LAST RESORT CHECK ENGINE OIL. IF LOOKS LIKE MILK SHAKE YOU HAVE LEAKING HEAD GASKET.THAT WILL CAUSE ENGINE OVERHEATING.
The coolant level is right on, no hoses are leaking and the accessory belt is intact. You start the engine, let it idle and make a visual inspection. There's no sign of belt slippage.
If your car is like most, the cooling fan is mounted to its drive pulley via a clutch. Clutch fans operate at different speeds under different conditions to help reduce drain on the engine and to save fuel. When the engine is hot, the clutch fan runs nearly as fast as the engine. When the engine is cold, the fan runs much more slowly.
The fan clutch operation is regulated by a valve that is opened and closed by a thermostatic spring. The valve controls the flow of a viscous silicone fluid between chambers in the clutch assembly. When the engine is cold, the clutch is essentially disengaged, which is why the fan runs at its slowest compared to the engine's speed. As the engine warms up, the air flowing to the fan assembly becomes hotter. The hotter air causes the thermostatic spring to unwind and open the valve. Silicone fluid from the reservoir chamber flows into the main chamber, engaging the clutch, and the fan spins faster (though it's still slightly slower than the engine.
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