What to Do When the Brakes Become Hard with Air Conditioning On in a Car?
2 Answers
If the brakes become hard when the air conditioning is on in a car, it should be sent to a 4S shop for repair as soon as possible. The general principle of braking is to fix a wheel or disc on the high-speed shaft of the machine and install corresponding brake shoes, belts, or discs on the machine base to generate braking torque under external force. The braking device is a mechanical braking device that can slow down the speed, also known as a decelerator. Reasons why the brakes become hard after turning on the air conditioning: After turning on the air conditioning, the engine load increases, the throttle vacuum decreases, and the brake vacuum assistance reduces, making the brake pedal hard to press. If there is a problem with the brake vacuum system, turning on the air conditioning consumes a large amount of vacuum, so the brake vacuum assistance does not work, making the pedal feel hard. This issue should be resolved as soon as possible, as it can be dangerous in emergencies. The car should be sent to a 4S shop for maintenance and repair promptly. The function of the brakes is to decelerate, either by reducing speed or bringing the vehicle to a stop. The principle of braking is to convert the kinetic energy of the car into heat energy, which is then dissipated. The kinetic energy comes from the power provided by the engine, which requires fuel combustion to generate work.
Last time I drove an old Lavida, I encountered this issue - the brakes suddenly became stiff when using the AC in summer traffic jams. Actually, this happens because the AC compressor consumes some of the engine's power, reducing the vacuum booster pump's suction force. Don't panic. First, try turning off the AC switch to let the engine recover, and the brakes will immediately soften. If they remain stiff after turning off the AC, it might indicate a vacuum hose leak or booster pump failure. I remember a mechanic once showed me how aged rubber vacuum hoses crack like leaking pipes, with very noticeable hissing sounds. Never force your way through this situation - head to the repair shop immediately, especially when traveling with children for safety.
