What to Do If the Baojun 730 Air Conditioning Is Not Cool Enough?

[GiaMarie]

Check if the air conditioning system is malfunctioning. Here is the relevant information: 1. Reasons why the air conditioning is not cooling: Lack of refrigerant. The car air conditioning needs to be refilled with refrigerant every 2~3 years. Refrigerant loss is usually due to leakage. If the car air conditioning is not cooling and starts cooling again after adding refrigerant, consider whether it is due to a lack of refrigerant. Damaged air conditioning flap. A faulty air conditioning flap motor is a relatively common issue. If the flap motor is problematic, it becomes more troublesome. The flap motor is usually located in the middle of the dashboard and serves as the main switch for the air conditioning vents. Even if the air conditioning can cool, cold air can only come out through gaps, significantly reducing the cooling effect. 2. Solutions: Since the dust cover and filter screen accumulate a lot of dust, if not cleaned in time, it will affect the cooling effect and increase power consumption. Therefore, the filter screen should be removed promptly and cleaned thoroughly in clean water to remove accumulated dust.

[Millie]

Last time I helped my neighbor check the Baojun 730's AC, I found that insufficient cooling requires checking the pipes first. If the low-pressure pipe is icy and frosted, it's working correctly; if it's not cold, there's an 80% chance the refrigerant is leaking. The AC filter in this car clogs easily—open the glove compartment, pull it out, and check for leaves and dust. The condenser at the front often gets covered in mud and bugs, so gently rinse the fins with a water spray. Also, check if the compressor belt is loose; in older cars, a slipping belt slows down the compressor. If rear passengers complain about heat, check if the rear vent valve is stuck. A mechanic told me that a common issue with Baojun is a clogged expansion valve, which can be fixed by replacing a small part. The newer refrigerants now available are much more effective than the old ones.

[DeArthur]

Last month, I took my family on a long-distance trip in my 730. Even with the AC cranked up to the max, it was still stuffy and hot, but I managed to fix it myself. Here’s a simple trick to try first: switching to recirculation mode can drop the temperature by three degrees. The AC sensor under the front passenger’s floor mat can get dusty, tricking the computer into thinking the cabin is cool enough. To clean the evaporator, you can buy AC cleaning foam and spray it through the drain tube. Once, I found that the low-speed setting of the cooling fan wasn’t working—only when driving at high speeds did it cool down. In such cases, you’ll need to check the fan resistor. Owners who’ve upgraded to LED headlights should note that voltage fluctuations can affect the compressor. Lastly, check the heater control valve—if it’s stuck in the heating position, you’re in trouble. To prevent moldy smells, turn off the AC five minutes before parking and let the fan blow natural air.

[DeMolly]

My six-year-old 730 had the same issue, and I've learned a lot from DIY maintenance. Don't cheap out on refrigerant – low-quality ones can damage the compressor. Clean the intake vents below the windshield monthly; small branches can block airflow. To check cooling efficiency, monitor the vent temperature with a thermometer – it should be 10 degrees lower than outside. Female drivers should also learn to read the dashboard pressure gauge – if the low pressure exceeds 3 kg, it's time for a check-up. Remember to apply silicone oil to door and window seals during seasonal changes to prevent cold air leaks. Last time, a repair shop guy taught me a trick: place a thermometer at the vent at noon – if it doesn't drop to 8°C in ten minutes, there's definitely a problem.

[VanWalker]

Old drivers share some practical tips: Poor AC performance on highways? It's likely the condenser got punctured by road debris. At a red light, rev the engine to 2000 RPM - if airflow suddenly turns colder, it indicates low refrigerant. For emergency cooling, freeze water bottles solid and place them near footwells (more fuel-efficient than open windows). Modified HID headlight users should check for electrical interference causing compressor clutch malfunctions. Off-road vehicles need frequent radiator flushing - mud-clogged fins trigger compressor shutdowns. Remember, overcharging refrigerant reduces cooling efficiency due to excessive pressure. When all else fails, inspect the receiver-drier - a failed unit causes ice blockages in pipes.

[MacTeagan]

Over the years of car modification, I've worked on over a dozen car air conditioning systems. For the Baojun 730, solutions vary by situation. When replacing the compressor, check if the correct amount of refrigerant oil has been added - running dry can cause cylinder scoring. If the AC feels insufficiently cool under direct sunlight, applying a metalized film can cool the interior twice as fast as regular films. For blower motor noise, cleaning the rollers and motor brushes with OEM parts costing around 50 yuan usually solves it. For maximum cooling, consider switching to a rotary compressor which vibrates less than the factory piston type. When upgrading to high-power fans, always add a relay to prevent fuse burnout. For leaking pipe connections, purchase a seal kit and remember to apply specialized green sealant. Final advice: Never use so-called 'super coolant' additives - they corrode aluminum pipes and lead to expensive repairs.