What does the fan clutch have to do with the AC?
The fan clutch is an automatic device that is often used in a vehicle’s cooling system. So, when the engine is cool or even when it is at a normal operating temperature, the fan clutch will partially disengage the engine’s radiator cooling fan (which is mechanically driven).
Can a bad fan clutch cause no AC?
The engine fan keeps the condenser cool which helps to keep the convertible’s AC system running smoothly. Thus, when the fan becomes defective, it creates various complications in the air conditioning unit. This causes lukewarm air, burning smell, overheating when idle.
Why do AC clutches burn out?
The clutch is burning up due to slip of the clutch overheating the clutch and melting the rubber. The reason it is slipping is the compressor locking up at the higher RPMs. You will need to reclaim the A/C refrigerant and disconnect an A/C line to see if there is black or dark grey residue in the system.
How do I know if my fan clutch is working?
Symptoms of a Bad or Failing Fan Clutch
- Vehicle overheating. One of the first symptoms that is commonly associated with a bad or failing fan clutch is an overheating engine.
- Excessively loud cooling fans.
- Decrease in power, acceleration, and fuel efficiency.
Why is the a / C CLUTCH always running in Kenworth?
Set to full cold turn on AC ,idle will go up a few rpm to compensate for compressor drag and engine fan will kick in providing air flow over coil ,when desired temp is reached thermostat will cut off compressor. So depends on outside ambient temp how long compressor runs.
Why is my a / C fan not running when the AC is turned on?
Many people confuse pressure in the system for the system being full. Volume and pressure are two different properties of a gas, which the refrigerant in your A/C system is a gas when it is allowed to escape to the atmosphere. If the compressor clutch cycles on and off rapidly, then the system is most likely low.
Why is my a / C CLUTCH not working at truck stop?
Undercharge starves the compressor of oil and overcharge doesn’t cool well. Run the system often as the oil keeps the compressor seal from leaking – no matter the season. Cans are 12 ounces and a pound is 16 ounces. With that pressure reading your system was more or less empty, gas only.
Why are my coolant fans not turning on?
If both fans operate then it is time to take a look at the pressure transducer. Don’t let this strange name fool you, it is simply a sensor that relays the amount of pressure in the system to the PCM and the PCM decides when to turn on the fans and or compressor clutch.