Hearing a "thump" when I turn on the climate control?

[300Con23s]

Not sure if this is normal but for the last few days whenever I turn on the car and turn the fan setting from off to on I hear a thump or a loud click coming from the front of the car. Another strange thing i've noticed is i'm getting ice cold air coming out of my vents when the a/c isn't even turned on??! I'm not sure if this has anything to do with a/c but i've noticed puddles of water under the car. Just wondering what you guys think.

[bling300c]

Originally Posted by 300Con23s

Not sure if this is normal but for the last few days whenever I turn on the car and turn the fan setting from off to on I hear a thump or a loud click coming from the front of the car. Another strange thing i've noticed is i'm getting ice cold air coming out of my vents when the a/c isn't even turned on??! I'm not sure if this has anything to do with a/c but i've noticed puddles of water under the car. Just wondering what you guys think.

puddles are normal. this is from condensation.

thump could be the compressor turning on - not normal to hear it.

cold air with AC off - is the compressor stuck on?

[HaTaX]

Cold air without A/C light on, do you have the right dial set to Auto? If so, the A/C light will not come on, but it will use it when certain conditions are met, and since it's summer time, it will use the A/C