Why does the brake feel different when the car's air conditioning is on?
2 Answers
This is due to severe overloading, where the force of gravity increases the vehicle's inertia, directly leading to brake failure. Here is relevant information: 1. Gear shifting: Control the direction based on road conditions and speed, disengage the high gear, and quickly rev the engine once to shift from high gear to low gear. This way, the engine will provide significant traction resistance to rapidly reduce the speed. Additionally, when shifting to low gear, the handbrake should be used in combination, but be careful not to pull it too tightly or too slowly. 2. The car needs to warm up for more than ten minutes before driving to have braking power: This situation usually occurs when the pressure transmission pipeline loses pressure, resulting in the inability to provide braking power in time. It is recommended to check whether there are cracks or looseness at the connection between the brake master cylinder's vacuum booster hose and the engine.
When driving with the air conditioning on, the brakes feel different, which is mostly due to increased engine load. After the air conditioning compressor kicks in, the engine has to work harder. If the vacuum booster system isn't strong enough, the braking assistance effect weakens. As an experienced driver who has driven many cars, I often encounter this issue during summer. It's more noticeable when the car comes to a stop at a red light or when climbing a hill—the brakes feel heavier than usual, as if the braking distance has slightly increased. It's advisable to check the engine idle speed and the brake booster vacuum hose for any issues, as a vacuum leak can worsen the problem. Get into the habit of turning off the air conditioning to compare the braking feel. Regularly changing the engine oil and inspecting the air filter can also prevent excessive load. After all, safe driving should never be taken lightly—address any abnormalities early and don't wait until an accident happens.
