Cooling fans are not coming on, what could be the problem?

Engine Cooling Fan Relay 1
In the center front of the engine compartment, on the lower radiator support, near the cooling fans
Engine Cooling Fan Relay 2
In the center front of the engine compartment, on the lower radiator support, near the cooling fans
Engine Cooling Fan Relay 3
In the center front of the engine compartment, on the lower radiator support, near the cooling fans

Radiator Cooling Fans - Professional Mechanics Online

www.2carpros.com/articles/how-an-electric-cooling-fan-works

Aug 1, 2015 - Step 1 - There are primarily two types of engine radiator cooling fan, electric and manual. A manual fan is connected to the engine drive pulleys ...

article How a fan clutch works

https://www.2carpros.com/articles/how-a-clutch-fan-works

Sep 3, 2015 - Step 1 - A fan clutch function is to engage the fan blade to the shaft when heated which is mounted to the front of the engine attached to the ...

Improving an Engine Cooling Fan Using Design for Six Sigma

www.mathworks.com/.../improving-an-engine-cooling-fan-u...

MathWorksA key component of an engine's cooling system is the cooling fan, which ... a shroud to direct airflow through the radiator (image courtesy of Novak Conversions).

The engine cooling fan is located on the front of the engine between the radiator and the engine block. You do not feel it through the ac vents.

follow this steps and fix it. God bless you

1. Determine the Reason for Water Pump Failure
   • 1 Repair a water pump by checking your car for a failure in the bearings. You can test for bearing failure by seeing if there is any play in the shaft that is connected to the electrical fan blades, as well as the drive pulley to the pump itself.
     
   • 2 If you notice any free play in the shaft or the pulley, you will need to take the pump apart and replace the bearings.
     
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   • 3 Determine if the water pump failure is due to a leak in the casing. Examine the water pump housing for leaking or water stains in the drainage hole next to the pulley.
     
   • 4 If water is dripping from this hole, then the seals inside the pump need to replaced in order to repair the pump.
     
   Remove the Water Pump for Repair
   • 5 Allow the engine to cool completely before removing any part of the cooling system. Never open a radiator cap or plug while the engine is still warm.
     
   • 6 Disconnect the car battery. This will prevent the electrical fan from turning on while you are under the hood.
     
   • 7 Drain the radiator of all fluid and disconnect the radiator hoses. Collect the fluid with a plastic container and keep it in a safe place until you are ready to put it back into the radiator.
     
   • 8 Remove the fan assembly. This will include the shroud, the fan and the fan belt. Disconnect the electrical leads for the fan.
     
   • 9 Remove the pulley for the fan belt as well in order to have access to the water pump.
     
   • 10 Use a socket set to remove the water pump from its engine mount.
     
   • 11 Open the housing for the water pump and replace the seals or bearing as necessary. Some auto parts stores carry repair kits that have both the seals and bearings for specific types of water pumps.
     
   • 12 Reassemble the cooling system by replacing the water pump, pulley, fan belt, fan assembly and radiator hoses. Refill the radiator with the fluid.
     
   • 13 Start the engine to see if the water pump repair was successful. Check for leaks before you take the car out on the road.
     

coolant is for the cooling system,the cars engine must be cooled, there is a radiator , hoses and fans. the coolant is also used to supply heat to the inside of the car in winter conditions or cold days.The radiator which is bolted on the front of the car stores coolant (antifreeze) the coolant is then pumped through the engine by the waterpump, there is a thermostat that regulates the coolant flow. when the coolant in the engine reaches a certain temp. 190 degrees the thermostat opens and allows cooler coolant to enter the engine to keep it from overheating, the coolant that comes out of the engine then flows through the radiator and the fans are turned on by the computer to cool the coolant as it flows through the radiator. this goes on and on to keep engine operating around 170- 190 degrees,If the coolant does not cool the engine then engine damage will occur.
coolant is also used to keep for freezing in cold temps, the coolant is mixed 50/50. half coolant and half water. if water was used it would freeze and in the summer it would boil and is not a good cooling source.hope this is helpful.

Your vehicle's OBD computers monitor all functions of your vehicle's electrical circuits.

do

This Could Be a NUMBER or Things.
1 Thermostat Sticking CLOSED.
2. Coolant Level LOW
3. LEAK in COOLING SYSTEM
4. If you have a 2 FAN System 1 Could Be Faulty
5. CLOGED / CORRODED INSIDE of RADIATOR
6. Radiator Dirty In the FRONT of it Restricting AIRFLOW

first check thermostat. when jeep is cold take out thermostat and see if you can move any parts . It might be frozen , if its good, then your fan is not providing enough cooling through the radiator to cool engine. if the fan is working properly, then your radiator fins are clogged and u need a through flushing.

have u bled the cooling system ?warm the car and cut the car off right before the fans come on ,let sit for 30-35 minutes,see if the coolant drops in res. if so repeat process untill coolant stops droping ,then drive car regularly if overheating stops ,but monitor it because it will drop somemore/there has been reports of new and rebuilt water pumps nt having correct propelar mounted on them/ backwards etc. if this helps let me know [email protected]

check cooling fan sensor,which tell the fans to come on