What are the reasons for the insufficient cooling of the Fit's air conditioning?
2 Answers
The reasons for the insufficient cooling of the Fit's air conditioning: lack of refrigerant (car air conditioning generally needs refrigerant replenishment every 2-3 years), damaged air conditioning flaps, excessively dirty condenser, faulty air conditioning compressor, throttle valve or expansion valve (there's a saying in the industry about the compressor: 'low pressure high, high pressure low, replace the compressor'), and aged or loose belts. Below is additional information: Refrigerant usage: Insufficient cooling caused by excessive refrigerant. This usually occurs due to overfilling during maintenance, as the proportion of refrigerant in the air conditioning system must meet specific requirements. If the proportion is too high, it can affect heat dissipation—more heat dissipation means greater cooling capacity, while less heat dissipation results in reduced cooling capacity.
A non-cooling Fit can indeed be frustrating. From my experience, the most common issue is insufficient refrigerant, as aging AC lines or loose connections often cause leaks. If the compressor doesn't engage when you turn on the AC, it's likely due to a loose belt or a faulty compressor clutch. Also, check the condenser in front of the radiator - if it's clogged with leaves or bugs, heat can't dissipate properly, significantly reducing cooling efficiency. Don't forget to inspect the cabin air filter too; after a year or two of use, it gets clogged with dust, restricting airflow and compromising cooling. Finally, give a quick check to electrical components like the temperature sensor and blower motor resistor - malfunctions in these can also affect cooling performance.
