How do I know if my clutch fan is bad in a vehicle?
To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.
How do you check the blower motor resistor on a Dodge Ram?
Place one lead of the Ohmmeter on terminal 1 of the resistor. Place the other lead on terminal 2 and check against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. Move the lead from terminal 2 to terminal 3 and check this reading against specifications.
Can a fan clutch be repaired?
While there are times you can repair the fan clutch, in most instances it’s best to replace it. Your engine may have a hard time cooling down (overheating) or heating up since the fan clutch isn’t working.
What does a fan clutch do?
A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine.
How do I know if my fan clutch is reverse rotation?
Clockwise or counter-clockwise rotation of the fan blade is defined as viewed from the front of the vehicle looking toward the rear. The replacement counter-clockwise fan clutch will be marked “REVERSE”.
What happens when blower motor resistor goes bad?
If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored.
What causes a blower motor resistor to go out?
In most cases, a blower motor resistor fails due to corrosion or overheating. Sometimes, the mechanical resistance to the motor rotation causes an excessive electric current that can overheat and prematurely damage the blower motor resistor.
Should a fan clutch spin freely?
The fan should move freely by hand when the vehicle is off. Any strong resistance means its locking up. Thats when they get noisy.
Is a flex fan better than a clutch fan?
For high rpm use, flex fans are considered an upgrade over clutch fans. They can be a good choice for modified vehicles turning 6,000 – 8,000 rpm. Advantages include: They move more air for better cooling.
Where is the cooling fan control module?
The cooling fan control module in your vehicle is located at the front left of the engine compartment next to the radiator.
Why is the radiator fan not working on my Dodge Charger?
Without the coolant hitting the sensor, the temp reading will be significantly lower than the actual engine temp. Your Charger’s radiator fan will not kick on. If you do have low coolant, don’t fill it up until the engine has cooled off.
How to disassemble hp G62 or Compaq Presario cq62?
STEP 1. Loosen five screws securing the hard drive and memory covers. Remove both covers. STEP 2. Remove three screws securing the hard drive assembly. The left screw (yellow) also securing the DVD drive. By the way, both memory modules can be accessed on the bottom. STEP 3. Lift up the hard drive assembly.
Why does my car fan not work when I stop?
When cruising, the vehicle moving through the air pushes air through the radiator, cooling the engine. At a stop, though, because the fan clutch doesn’t engage and air isn’t forced through the radiator, the engine can’t dissipate excess heat. Insufficient heat in winter is another common problem but caused by the opposite fan clutch failure.
What happens when a fan clutch goes bad?
The key to fan clutch function is its heavy silicone oil, whose viscous properties allow for soft engagement to drive the fan. If it leaks out, the clutch will weaken and eventually fail.