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If there's an issue with the A/C unit that's causing it to be unnaturally loud, that could be a vibration that's triggering the knock sensor, leading to unnecessary pulled timing.
Is this your first car? Have previous cars had A/C this loud?
Is this car new to you? Was the A/C always this loud?
Is this your first car? Have previous cars had A/C this loud?
Is this car new to you? Was the A/C always this loud?