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Water leaks into my front passenger side floor

Tiny
BOXWOOD
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 194,000 MILES
This happens every summer even though my A/C does not work and I don't turn it on. It is so much that it takes several layers of newspaper to soak it up every day. This is only in the summer. Nobody seems to know what is wrong.
Sunday, July 21st, 2019 AT 8:30 PM

11 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

To find the source of the leak, I would take it to a self serve car wash. Bring someone with you.

Take the high-pressure water and spray all around the windshield area and have someone look under the dash for any water coming into the car.

Spray also around the sunroof, if you have one, as the drains do clog up and the water will leak into the car as well.

Roy
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Monday, July 22nd, 2019 AT 5:53 AM
Tiny
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  • 6 POSTS
It only does this in the summer.
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Monday, July 22nd, 2019 AT 9:58 AM
Tiny
ASEMASTER6371
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Okay, got it.

You still need to do the pressure test as I suggested.

Roy
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Monday, July 22nd, 2019 AT 10:06 AM
Tiny
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  • 6 POSTS
The water leaks into my passenger side floor blows through my defroster, which I use in the summer to bring a little bit of cool air in, but I also use the defroster in the winter.
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Monday, July 22nd, 2019 AT 10:41 AM
Tiny
ASEMASTER6371
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Then you need to repair the A/C system. That is crucial for humidity control.

What is the issue with the A/C?

Roy
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Monday, July 22nd, 2019 AT 11:30 AM
Tiny
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  • 6 POSTS
Like I said, it will only blow air our through the defroster setting. If I switch it to A/C setting, nothing comes out. I think my son put a different settings panel in there last summer, but it didn't help.
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Monday, July 22nd, 2019 AT 1:07 PM
Tiny
ASEMASTER6371
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A/C in your original post you said the A/C does not work.

If you have defrost only, that could be an actuator but has nothing to do with the water leak.

I attached a picture of the defroster motor. Check for any vacuum to the motor with the command at the vents.

Roy
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Monday, July 22nd, 2019 AT 1:21 PM
Tiny
BOXWOOD
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  • 6 POSTS
The A/C doesn't work; only getting air from outside when I turn on defroster. No cool air.
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Monday, July 22nd, 2019 AT 1:32 PM
Tiny
ASEMASTER6371
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Okay, back to the pressure test for leaks.

Roy
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Monday, July 22nd, 2019 AT 1:35 PM
Tiny
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Are you saying I have 2 problems?
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Monday, July 22nd, 2019 AT 1:39 PM
Tiny
ASEMASTER6371
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Yes, you have a water leak from somewhere and you have an A/C system that does not work with the defroster stuck in defrost.

Roy
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Monday, July 22nd, 2019 AT 1:46 PM

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