···
Log in / Register

What are the reasons for the unsatisfactory cooling performance of the Buick Excelle's air conditioning?

3 Answers
Frances
07/29/25 8:26pm
Specific reasons are introduced as follows: 1. Insufficient coolant: Under normal circumstances, if the air conditioning is not cooling, you can check whether the coolant is insufficient. If it is, add more. 2. Lack of refrigerant in the air conditioning system: This is the most common issue. A lack of refrigerant is key. When starting the system, first touch the return pipe to judge by temperature. If it is cold, check if the internal fan speed might be low. Clean or replace the internal pipe fins and dust filter. 3. The internal pipe is not cold, and the thick pipe may be flattened: If the internal pipe is not cold, the thick pipe may be flattened. Check the return air temperature; if it's not cold, then check the intake air. If the intake air is cold and frost forms, add refrigerant. If the frost gradually dissipates, it is certain that there is a lack of refrigerant. Compressor aging is not uncommon, and insufficient exhaust is the main issue. The high-pressure fins must be inspected, as dirt can also slow down cooling.
Was this review help?
16
0
Share
VanJace
08/14/25 5:12pm
My Buick Excelle also had weak AC performance before. The final inspection revealed the condenser and radiator gaps were completely clogged with willow catkins, like being covered by a thick quilt. The mechanic said this is a common issue with Excelle - poor heat dissipation leading to weak cooling. Additionally, the cabin air filter hadn't been changed for two years and was so dirty you could practically grow flowers in it, directly affecting airflow. Another small detail was insufficient radiator fan speed, especially noticeable when idling at red lights on hot days. If there are signs of refrigerant leakage, mechanics would use fluorescent dye testing. The recommendation is to first clean the condenser and replace the filter - costs less than 200 RMB with immediate effect, much more effective than simply recharging refrigerant. If that doesn't work, then check compressor pressure and temperature sensors.
Was this review help?
3
5
Share
Expand All
BeauAnn
10/16/25 4:25am
As a long-distance driver, I've found the main weakness of the Excelle's AC lies in its cooling system. Last time driving on the highway during hot weather, the vent temperature only dropped to 12°C and couldn't go lower. Installing an additional electric fan later solved the issue. Other common causes include: evaporator icing causing sudden loss of cooling (a classic symptom of temperature sensor failure); abnormally hot high-pressure pipes when the expansion valve is clogged; and squeaking noises accompanied by reduced cooling when the compressor belt slips. My personal maintenance routine includes using an air gun to clean the front grille monthly and replacing the dryer every two years. Remember to regularly run the AC on high fan speed with outside air circulation for a few minutes to reduce odors and bacterial growth.
Was this review help?
10
3
Share
Expand All
More Forum Discussions

Does CVT mean automatic transmission?

CVT stands for automatic transmission. Here is an introduction about CVT: 1. Introduction: CVT represents the vehicle's transmission, specifically a continuously variable transmission. The difference between this type of transmission and other automatic transmissions is that the gear ratio is not intermittent but continuous, making it one of many transmission types. 2. Types: The first type is the AT transmission, known as the hydraulic automatic transmission, which was an early form of automatic transmission and is still used in some models today. The second type is the CVT transmission, a mechanical continuously variable automatic transmission, commonly used in Japanese models. The third type is the AMT transmission, an early form of transmission. The fourth type is the dual-clutch transmission, which features two sets of clutches and was first adopted by German vehicles.
16
0
Share

What is the Discount for Flood-Damaged Cars?

Flood-damaged cars are generally sold at a 30% discount. Below is an introduction to the hazards of flood-damaged cars: 1. Electronic system malfunctions: The most vulnerable components in a car to water damage are the electronic systems. Although modern vehicles have waterproofing measures for electronic circuits, they cannot withstand heavy flooding or prolonged submersion. Once water submerges the engine compartment for an extended period, it can cause wire corrosion and short circuits. In minor cases, some electronic functions may fail, while in severe cases, it could lead to spontaneous combustion. 2. Engine failure: Generally, if a car's engine compartment has been submerged in water, do not attempt to start it. There is no guarantee whether water has entered the engine. If water has entered, a secondary start could result in a broken connecting rod in minor cases or complete engine failure in severe cases. In either scenario, the repair costs are extremely high, and the claims process is unlikely to be smooth.
10
1
Share

Does Rainy Weather Affect the Driving Test (Subject 2)?

Generally, rainy weather does not significantly impact the Subject 2 driving test. However, if the rain becomes heavy, it may affect visibility and make it difficult to accurately identify reference points. Below are some considerations for taking the Subject 2 test in rainy conditions: 1. The most crucial factor during a rainy test is maintaining the right mindset. If you encounter rain on the test day, avoid negative emotions or excessive nervousness. It would be a great pity if months of preparation were wasted due to anxiety. Therefore, candidates must adjust their mindset, stay optimistic, and not let the weather affect their performance. 2. Rain can blur the side mirrors, so candidates should wipe them clean before getting into the car to ensure clear visibility during the test. Additionally, shake off any mud or water from your shoes before entering the vehicle to prevent slipping on the pedals. Rainy conditions also increase the risk of wheel slippage. Hence, during the test, candidates should control their speed and drive slower than during regular practice sessions.
12
0
Share

What are the causes of a rich fuel mixture fault?

It may be caused by excessive carbon buildup on the throttle valve, which requires cleaning at a 4S shop to resolve the issue. Alternatively, it could be due to faults in the oxygen sensor, coolant temperature sensor, or intake pressure sensor. Here is an introduction to the automotive fuel system: Components: The automotive fuel system includes components such as the fuel tank, fuel pump, fuel damper, fuel pressure regulator, fuel filter, fuel injector, thermostat timing switch, and cold start valve (cold start injector). Carbon Buildup: Carbon deposits and sediments can clog the needle valve and valve holes of the fuel injector, affecting the performance of the precision components in the injection system, leading to poor fuel injection, inadequate atomization, and reduced power performance.
13
0
Share

What are the models of European single-girder cranes?

Here is an introduction to the models of European single-girder cranes: 1. Models: The main models of European single-girder cranes include the LDA-type electric single-girder crane, LD hoist single-girder crane, LDX-type European electric single-girder crane, LX-type electric single-girder suspension crane, SDXQ-type manual single-girder suspension crane, and single-girder grab crane. 2. European single-girder cranes: European single-girder cranes are characterized by their light weight, compact structure, and low energy consumption. European cranes adopt a unique design concept, featuring small dimensions, light weight, and low wheel pressure. Compared to traditional cranes, European cranes have the minimum hook-to-wall distance and the lowest clearance height, allowing them to work closer to the front, with higher lifting heights, effectively increasing the working space of existing workshops. Due to their light weight and low wheel pressure, new workshops can be designed smaller and with more comprehensive functions. Smaller workshops mean significant savings in initial construction investment, as well as long-term heating, air conditioning, and other maintenance costs.
18
5
Share

Is it better to buy a National V or National VI car?

If the region where you live has not implemented the National VI emission standard, you can purchase a National V car. If the region has already implemented the National VI emission standard, you need to buy a National VI car. However, it is recommended that car enthusiasts buy National VI cars because they can be driven for a longer time and can be sold at a higher price when resold. Below is an introduction to National VI: 1. Starting from 2019, many cities and regions across the country have gradually begun to implement the National VI emission standard. Initially, the National VI a standard was implemented, and it is expected that the National VI b standard will be implemented in 2023. 2. The introduction of new emission standards means that the country has a new set of technologies for vehicle annual inspections, and cars will also undergo corresponding technical upgrades.
3
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.