Coming from the air conditioner drain line

CHAMBERSLE40

MEMBER
2004 FORD F-150
V8
4WD
AUTOMATIC
51,000 MILES

My floor on the passenger side stays wet all of the time. I was told that the problem could be coming from the air conditioner drain line. I have not been able to locate this drain line. Could you please adivise me where the locatiion might be? It has all ready been checked for water leaks and heater coil leaks and these have been OK. Any help would be great as to finding out what this problem is.

Sunday, October 12th, 2008 AT 12:11 PM

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

The drain is in the HVAC housing but if this is clogged then the water would most likely be backed up and coming out of where the blower motor sits. Here is a video that shows how to find the drain line:

https://youtu.be/q9_MZiS2_NE

So if you remove the blower motor to check for moisture inside the box that will tell you if this is the issue. If it is then you will need to remove the HVAC housing to clean it out. However, I suspect this is a heater core issue depending on how it was checked because it is unlikely that the evaporator drain will clog.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

I attached the info below from the manual on how to do this. Please let us know if you have questions. Thanks

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