What is the solution for no cooling at idle speed?

[LeWeston]

At the same time, add fluorescent agent. After the vehicle has been used for a period of time, use a dedicated fluorescent lamp to check the air conditioning system. If there is a leakage point, it will glow. Then repair or replace the leaking parts and components.

[JohnnyAnn]

I remember last time when my car was idling at a traffic light, the AC suddenly blew hot air, which was quite annoying. There are several possible reasons for no cooling at idle: first, insufficient refrigerant causing low pressure and ineffective cooling; second, the compressor not working adequately at low idle speed, possibly due to a loose or slipping drive belt; third, a stuck cooling fan or blockage by leaves leading to poor heat dissipation. For troubleshooting, first check if the engine compartment fan is rotating normally—if not, inspect the fuse or relay. If the fan is working, try adding some refrigerant, but be careful not to overfill and cause excessive pressure that could damage the system. Professional repair is recommended to prevent minor issues from turning into major problems. Another common scenario is a dirty condenser or blockage by insect debris—regular cleaning can prevent this. In short, it’s safer to address such issues early rather than wait for trouble on the highway.

[HoldenFitz]

As someone who enjoys tinkering with my car, when encountering idle AC not cooling, I first perform some simple checks. Start by listening for the compressor's activation sound—if silent, it might be due to belt wear or insufficient tension. Check if the fan is spinning normally, especially after long summer drives when dust buildup can cause blockages. Inspect the refrigerant level; if too low, top it up with a high-quality product to avoid system contamination. If all else fails, lightly pressing the accelerator to slightly increase RPM at idle can sometimes temporarily restore cooling. I've cleaned the filter and condenser in the garage with decent results. For long-term prevention, replace the AC filter annually and get a system check. Don’t forget to use the external circulation mode in heavy traffic to aid heat dissipation—a small trick that helps. Always prioritize safety; if unsure, visit a professional shop—safety comes first.

[AmeliaAnn]

I believe many idle air conditioning issues stem from neglecting routine maintenance. The cooling system relies on refrigerant circulation, and leaks or insufficient levels can lead to inadequate idle pressure and failure to cool. Aging components like the compressor, belts, and fan assembly, or dust blockages are also common causes. Timely inspections, such as cleaning the condenser and checking belt tension every quarter, can prevent problems. If you notice the AC isn't cooling, don't panic—turn it off and let the system rest for a few minutes before trying again, as overheating may sometimes resolve on its own. For serious issues, it's advisable to visit a 4S shop for professional diagnostics—they have tools to measure pressure and read fault codes. Remember, regular maintenance is more cost-effective and hassle-free than emergency repairs, extending your AC's lifespan while ensuring driving safety.