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What Causes Engine Vibration When the Car Air Conditioner is Turned On?

1 Answers

LeSienna

07/29/25 12:59pm

Engine vibration when the car air conditioner is turned on can be caused by low idle speed, the ECU not receiving the air conditioner activation signal, issues with the air conditioning acceleration device, spark plug carbon buildup, throttle valve carbon buildup, fan deformation, or loose screws. Related explanations: 1. ECU: Refers to the Electronic Control Unit, also known as the vehicle computer or onboard computer. 2. Spark plug carbon buildup: Refers to the residue produced by incomplete combustion of gasoline under high temperatures, which adheres to various parts of the spark plug surface, forming a black substance known as spark plug carbon buildup.

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How to Start a Buick with Keyless Ignition Using the Key?

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