What Causes the Santana to Shake When the Air Conditioning is On?
2 Answers
Santana shaking when the air conditioning is on may be caused by low engine idle speed due to the air conditioning. It is recommended to check the air conditioning idle speed and also inspect for excessive engine carbon buildup, which can lead to low idle speed. Solutions for Santana Shaking When the Air Conditioning is On: Clean the engine carbon buildup, replace the oil pad and spark plugs, check the fuel supply pressure and intake pressure sensor, clean the fuel system, and inspect the idle speed motor for carbon buildup, which should be cleaned if present. Santana Vehicle Maintenance: When starting the car cold, allow it to idle for one and a half minutes to give it a warm-up period. Avoid lugging the engine while driving, and downshift promptly when the engine starts to shake. Also, pay attention to the protection of the chassis.
I recently encountered the issue of my Santana shaking when the AC is turned on, which is usually related to a sudden increase in engine load. When the AC is activated, the compressor needs to work and consumes power, forcing the engine to provide more power like it's on steroids, which can cause the idle to become unstable. Sometimes, it's an issue with the ignition system, such as old spark plugs not firing effectively, or clogged fuel injectors due to carbon buildup, preventing fuel from entering and causing unstable combustion. When I dealt with this before, I checked and cleaned the throttle body, and it worked quite well—dirt buildup on the throttle body can affect the engine's 'breathing.' If the belt is loose or the fan is stuck, the engine will struggle and shake when the compressor starts. It's best to visit a repair shop promptly to check idle parameters, compressor oil pressure, etc., using a diagnostic tool, so minor issues don't escalate into major engine repairs. AC-induced shaking not only affects comfort but can also damage other components, such as the fan failing to rotate, leading to cooling problems.
