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If u don't hear any engine noise when u turn on fan u have to check fuse fan .otherwise u must check the air flaps ... same cars has activate by air pressure .... but if un hear fan maybe the fan`s pallet its loosed ...
which fan? Interior fan, or radiator cooling fan? Is it the radiator cooling fan, or the fan controlled by the air-conditioning?
Run the vehicle, turn on and off the air-conditioning to identify which of the fans in the engine bay is the one triggered by the air-con and which is the primary cooling fan. If the primary cooling fan is permanently engaged, then first try replacing it's relay as it may have fused closed.
It could be that; the FAN MOTOR works but the fan-wheel is not turning. This usually happens when the center spindle of the fan-wheel RUSTS and eventually loses contact with the actual wheel itself.
When your air is turned on check and see if the radiator fan and condensor fan are coming on.When the air is turned on both fans should immediately turn on.If one is not this can cause an overheating issue when the air is turned on.
The blower fan relay is located in the fuse box on the driver's side fender-well.A Jeep Cherokee uses an electric fan as an auxiliary fan for engine cooling and for cooling the air conditioning condenser when the air conditioning is in operation. A radiator temperature-sensing switch that activates the fan relay at 198 degrees F turns the fan on and controls its operation. The temperature drops when the vehicle is in motion and the switch turns the fan off. When the air conditioning system is in operation, the air conditioning relay supplies power to the fan relay via a fan diode downstream from the ignition switch. This diode activates the fan relay and keeps the fan operating as long as the air conditioning is on.Thanks. you can rate this solution and show your appreciation.
sounds like the reiculation door is not moving, listen for a change in sound when you
move the knob from fresh air to recirculate. if no change, you will need to check the recirc, actuator or door inside the blower
case.
Yes, Massive air flow from the first fan is causing air to be brought in from not only the front of the radiator but from the fan right next to it causing reverse air flow through the fan. This intern can cause less dirrect airflow through the radiator. Also, the recirculation of hot air (from the first fan) into the second fan, across the radiator and back to the first fan can cause the vehicle to run hotter. Wile the car is moving there is enough air pressure from the outside of the vehicle to flow directly through the radiator with little fan assistance needed. If you have the engine running and and turn on the a/c, you should hear the fan change speed or even see the second one turn on (If the fan is working), there is no delay. You might have a bad relay and good fan, as there is a separate relay that activates this same fan for the a/c.
I have a 2008.5 Mazda 3 GS Sport and when you turn the air flow selector to windows or windows/floor, the air condition will turn on automatically. (Can't turn it off.)
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