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What are the reasons for insufficient air conditioning cooling in the Volkswagen Sagitar?

1 Answers

OFernando

07/28/25 10:43pm

When the Volkswagen Sagitar experiences insufficient air conditioning cooling, possible causes include damage to the air conditioning compressor, expansion valve, or throttle valve; failure of the air conditioning flap motor; aging or loose belts; insufficient refrigerant; or excessive moisture or impurities in the pipeline. Below are detailed explanations: 1. Insufficient or low refrigerant: A lack of refrigerant is a common cause of poor air conditioning cooling in cars, often due to minor leaks. Solution: Observe the sight glass on the dryer tank. During normal operation, if continuous slow bubbles appear in the sight glass, it indicates insufficient refrigerant. If obvious bubble flipping occurs, it signifies a severe shortage of refrigerant. 2. Loose air conditioning compressor drive belt: A loose drive belt can cause slipping during compressor operation, reducing transmission efficiency and lowering the compressor's speed. This results in decreased refrigerant compression and delivery, leading to inadequate cooling.

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