A/C leak

Tiny
JAZSTS88
  • MEMBER
  • 2007 CADILLAC STS
  • 3.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 192,000 MILES
Water on my front and rear passenger side floor when using A/C.
Saturday, August 28th, 2021 AT 9:35 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This is most likely the drain for the evaporator that is clogged and causing the condensation to back up in the housing and then leak on the floor.

Here is a guide that will help with this:

https://www.youtube.com/watch?v=q9_MZiS2_NE

I am attaching the info below from the manual as well that will give the detail needed on the drain on your vehicle.

This is in the center console on this vehicle so I would start with this and make sure it is clear.

Also, does the A/C operate properly or is it not blowing as cold as it should?

The evaporator could be freezing but you didn't mention this so I suspect the issue is the drain. However if it is freezing then we need to check the pressures of the system because it could be low causing the evaporator to freeze.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please see below and let me know if you have questions on this. Thanks
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Sunday, August 29th, 2021 AT 5:42 PM
Tiny
JAZSTS88
  • MEMBER
  • 2 POSTS
Yes it works perfectly just the wet floor problem.
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Monday, August 30th, 2021 AT 1:58 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Okay. That means we need to access and check that drain.

Let us know if you have other questions on this or how it turns out. Thanks for clarifying that.
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Monday, August 30th, 2021 AT 3:53 PM

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