Engine vibration after AC on

[s650ksa]

When I first bought the car, whenever I turned on the air conditioner, the engine would shake for a fraction of a second and then disappear. This problem went away on its own, but after driving the car for a long distance and stopping it, I woke up the next day and started the car. After the idling, I turned on the air conditioner and the shaking happened for a second and then disappeared. Unfortunately, I am not good at mechanics, so what do you think is the reason, since the car has not exceeded 5,000 miles?
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[D/\rK•650]

When I first bought the car, whenever I turned on the air conditioner, the engine would shake for a fraction of a second and then disappear. This problem went away on its own, but after driving the car for a long distance and stopping it, I woke up the next day and started the car. After the idling, I turned on the air conditioner and the shaking happened for a second and then disappeared. Unfortunately, I am not good at mechanics, so what do you think is the reason, since the car has not exceeded 5,000 miles?
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Realize this is old but thought id bite, so this can be a normal operation for engines to sometimes shutter a but when the AC pump kicks in. If its especially violent then maybe the pump bearing is bad. Sometimes they do shutter when engaging though.

 

[DarkHorsePremium]

In addition, inspect the belt, and check the deflection. I believe the AC belt is stretch fit. If it was installed improperly, it could get damaged. It should have about 1/2 in of deflection.

 

[s650ksa]

Realize this is old but thought id bite, so this can be a normal operation for engines to sometimes shutter a but when the AC pump kicks in. If its especially violent then maybe the pump bearing is bad. Sometimes they do shutter when engaging though.

Thanks,I went to the dealer about this problem and they told me everything was fine, just give the car a chance and if it happened again come back, but it actually disappeared.

 

[s650ksa]

In addition, inspect the belt, and check the deflection. I believe the AC belt is stretch fit. If it was installed improperly, it could get damaged. It should have about 1/2 in of deflection.

I went to the dealer about this problem and they told me everything was fine, just give the car a chance and if it happened again come back to them, but it actually disappeared, i appreciate thanks

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