RC.600.108 5U0820803K AC.100.1758 Car AC Compressor For Volkswagen Fox For Voyage WXVW045

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Causes of Automotive A/C Compressor Failure

1. Lack of Lubrication (Oil Starvation)

Cause:

Insufficient PAG or ester oil in the system (due to leaks or improper servicing).

Oil circulation blocked by a clogged filter/drier.

Effect:

Increased friction → Worn bearings, seized pistons, or shaft failure.

2. Refrigerant Leaks

Cause:

Faulty seals, O-rings, or cracked hoses.

Corrosion in condenser or evaporator.

Effect:

Low refrigerant → Poor cooling, compressor overheating (refrigerant carries oil).

3. Contamination (Debris or Moisture)

Cause:

Metal shavings from a failing compressor circulating in the system.

Moisture ingress due to a failed receiver-drier.

Effect:

Clogged expansion valve/orifice tube → Restricted flow.

Acid formation → Corrosion of internal components.

4. Electrical or Clutch Failure

Cause:

Burnt clutch coil (excessive voltage or aging).

Worn clutch bearing or air gap misalignment.

Effect:

Compressor won’t engage → No cooling.

5. Overcharging or Undercharging Refrigerant

Cause:

Incorrect DIY recharge or faulty pressure switches.

Effect:

Overcharge: High pressure → Valve damage, hose bursts.

Undercharge: Low oil return → Compressor seizure.

6. Excessive Heat or Overuse

Cause:

Prolonged A/C use in extreme heat.

Poor engine cooling (failed radiator fan).

Effect:

Thermal stress → Warped components or seal failure.

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Car AC Compressor: Quick Facts

1. What It Does

• The heart of your AC system
• Circulates refrigerant to cool your car

2. Trouble Signs

• Air isn't cold enough
• Weird noises when AC is on
• Oil stains near compressor
• AC turns on/off by itself

3. Can You Keep Driving?

• Temporarily yes, but...
• Risk of complete system failure
• May damage other parts

4. How Long It Lasts

• Usually 100,000+ miles
• Lasts longer with regular AC use