Car AC Intermittent Cooling
The car AC cools for a while then stops cooling, then resumes again. An annoying fluctuation in cooling performance.
Possible Causes
Low Refrigerant
High likelihoodRefrigerant level is near the minimum, causing the pressure sensor to cycle on and off.
Faulty Pressure Sensor
Medium likelihoodPressure sensor gives false readings, disconnecting the compressor at inappropriate times.
Compressor Clutch Issue
Medium likelihoodCompressor clutch engages and disengages irregularly due to wear or weakness.
How to Diagnose?
- 1 Observe compressor engagement pattern during operation
- 2 Measure refrigerant pressure during cycling
- 3 Scan pressure sensor with diagnostic computer
- 4 Inspect compressor clutch wiring
Repair Cost
Depends on cause and vehicle type
| Service | Price | Notes |
|---|---|---|
| Estimated Repair Cost | 80–1500SAR | Depends on cause and vehicle type |
* Prices are estimates and may vary depending on vehicle type and condition. Contact us for an accurate quote.
Frequently Asked Questions
AC cools then stops, is this a serious problem?
Usually not serious but should be inspected soon. Most often caused by low freon with a small leak, and delaying diagnosis can damage the compressor.
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Read moreReady to Fix Your Car AC?
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