What causes a car fan clutch to go bad?
Insufficient heat in winter is another common problem but caused by the opposite fan clutch failure. If the fan clutch seizes, it remains engaged all the time, cooling off the engine too much. Excess fan noise at high speed is caused by the same problem, a seized fan clutch.
How does a fan clutch work on a radiator?
A thermal fan clutch reacts to temperature of the air rushing over it from the radiator. As the radiator heats up, the air passing through it also heats up. This heats up a small bi-metallic coil in the face of the fan clutch, releasing an internal valve.
What to do if your radiator fan is going bad?
A new radiator fan and thermal fan clutch, ready to keep your engine cool. Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis.
Why does my car fan spin when the engine is off?
Fan spins after engine shut-down might indicate a weak clutch. Silicone fluid leaking from the fan clutch would cause this problem. When the engine is off, there are a few things you can do to check the fan clutch: Spin the fan. Electronic types might freewheel, but most fan clutches should spin with a little effort.
What happens when you have a bad fan clutch?
A stuck fan clutch will cause excessive, unnecessary drag on the engine, which can cause a drop in power, acceleration, and fuel efficiency, sometimes to a quite noticeable degree. As the fan clutch is one of the main cooling system components, it is very important to the proper operation of the engine.
What to do if your Mercedes cooling fan keeps running?
To avoid this, cancel and sign in to YouTube on your computer. Automotive information based around Mercedes-Benz information and repair assistance along with other makes and models. No matter what car you own or need help with, my tips and tricks and teachings can help you along the way.
A thermal fan clutch reacts to temperature of the air rushing over it from the radiator. As the radiator heats up, the air passing through it also heats up. This heats up a small bi-metallic coil in the face of the fan clutch, releasing an internal valve.
A new radiator fan and thermal fan clutch, ready to keep your engine cool. Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis.
How can I tell if my fan clutch is on the outs?
Detecting Problems While Driving Pay attention to changes in air temperature. One of the most common symptoms of a fan clutch on the outs is an inability to properly cool the air circulating through the vehicle. Listen for excessive noise when driving at high speeds.
How does a torque limiting fan clutch work?
A torque-limiting fan clutch reacts to engine speed. A centrifugal valve opens to allow the flow of heavy silicone fluid, locking the fan blades to the pulley. At idle and low engine speeds, this fan clutch is fully engaged, gradually disengaging as engine speed increases.
Why is my Mercury Mountaineer AC not working?
2004 Mountaineer rear AC ceilng vents only blow… I have a 2004 mercury mountaineer. the air conditioner blows cold air fine through the front vents and the vent at… Find the most common driver-reported problems that are to blame when a Mercury Mountaineer has air conditioning problems.
What should I do if my fan clutch is not working?
Switch on the A/C and turn it down to the coldest setting. If it fails to cool down after several minutes, or seems to be emitting unusually warm air, there could be a problem. Hold your hand a few inches away from the vent so slight variations in temperature will be more noticeable.
When to know if your car fan clutch is binding?
Activity that’s louder than normal may indicate binding. A binding fan clutch will typically be accompanied with warm air flow from the A/C, since the fan isn’t turning the way it should be. Start your vehicle and listen for the fan to engage. Give the engine a little time to warm up. After 4-5 minutes, the fan clutch should come to life.
Is it illegal to replace refrigerant on Mercury Mountaineer?
Depending on location, it may be illegal for a technician to replace refrigerant without updating the A/C system to handle the newest type. See what others are asking about their Mercury Mountaineer.