Unable to Locate the Drain

[Sprinkle_Star]

Does anybody know where I can find the evaporator core drain underneath the Fiesta? Mine is plugged up.

 

[TyphoonFiST]

Why do you think yours is plugged up? Is it wet on the floor on the passenger side floor?

 

[Sprinkle_Star]

There's an alarming lack of water accumulating on the ground when my AC is running.

 

[D1JL]

Water on the ground is normal.
As @TyphoonFiST suggests, if the drain was plugged, water would be in the passenger floor.

The volume, would depend on the amount of humidity the AC is removing from your car.

 

[Intuit]

To answer the question, presumably it would be below the evaporator. You can lay eyes on the evaporator when changing the cabin filter.

Even if there isn't enough of a plug for it to back up, a restriction may eventually cause an odor. So if @Sprinkle_Star wants to at least check it, it's a good idea.

USB-C Bore scopes that you can plug into your cell phone can be easily/cheaply had...
https://www.amazon.com/gp/product/B071HYRPND/



I'll continue to peruse the manual to see if there's more detail.
EDIT: No luck. I think it's apart of an assembly that houses the core and that assembly is removed/installed as a unit. So there's no detail on it. Not even sure it's visible in the diagrams of the unit.
.

 

[Dialcaliper]

Unfortunately I investigated the same thing, there’s not really a proper evaporator drain tube on the Fiesta. Evidently the drip tray basically drains through a plastic fitting hole through the floor, and the actual drain location is hidden behind the exhaust heat shield on the right side. Learn to love the corner cutting found on modern econobox cars

Here’s a post over on Fiesta Faction with a photo of the location (ours is the same as the base model)

https://www.fiestafaction.com/threads/where-is-the-ac-drain-line.51337/

 

[Sprinkle_Star]

Unfortunately I investigated the same thing, there’s not really a proper evaporator drain tube on the Fiesta. Evidently the drip tray basically drains through a plastic fitting hole through the floor, and the actual drain location is hidden behind the exhaust heat shield on the right side. Learn to love the corner cutting found on modern econobox cars

Here’s a post over on Fiesta Faction with a photo of the location (ours is the same as the base model)

https://www.fiestafaction.com/threads/where-is-the-ac-drain-line.51337/

Precisely what I was seeking - thank you very much.

I caught this problem early... that is to say before the interior would get wet if I kept running the a/c

 

[Intuit]

Unfortunately I investigated the same thing, there’s not really a proper evaporator drain tube on the Fiesta. Evidently the drip tray basically drains through a plastic fitting hole through the floor, and the actual drain location is hidden behind the exhaust heat shield on the right side. Learn to love the corner cutting found on modern econobox cars

Here’s a post over on Fiesta Faction with a photo of the location (ours is the same as the base model)

https://www.fiestafaction.com/threads/where-is-the-ac-drain-line.51337/

Just in case the information in that link that DialCaliper posted eventually gets lost...
https://www.fiestafaction.com/threads/where-is-the-ac-drain-line.51337/

 

[Sprinkle_Star]

Hi everyone, I just wanted to give an update for this thread.

My mechanic was able to locate the drain, and it turned out to be in a slightly different location than what the picture above shows.

The drain on my '17 ST is actually located above the heat shield, aft of the front subframe, directly in the center where the pipe on the resonator is. I've circled its location in blue.

My mechanic needed to unscrew the heat shield from its studs in order to access the drain.

I'm not really smelling any foul odors when the blower is running... but I'm still curious about whether I should run some disinfecting spray when I am in the process of replacing my cabin air filter.

 

[XR650R]

Thanks for the useful info, Sprinkle_Star.

I never experienced a smell or a wet floor in my car, but I like this tip because you won't get too much moisture in the vents. My problem is remembering to do it a few minutes before I park it.

View: https://www.youtube.com/watch?v=06BpHbYJxg0


I'll follow up w/ part 2.

View: https://www.youtube.com/watch?v=vh-bI3ZdRoA

 

[Intuit]

^ That's exactly what I've been doing; turning off the A/C and running some normal air before shutoff. Interesting to hear that someone else does the same.

.......... curious about whether I should run some disinfecting spray when I am in the process of replacing my cabin air filter. .....

Might be same location as the first photo when considering the angle of the shot?

Many of those sprays contain alcohol which can degrade plastics and seals. If there's any coating on the evaporator, it might damage that as well. My Brother is dealing with an A/C leak on his Impala, which he says is commonly sourced at the evaporator core per forums and is a known issue with the manufacturer (TSB issued) An oil based product might be better for the materials but, anything like that, that remains, will be regularly inhaled. So the long term safety aspect is under consideration.

 

[Sprinkle_Star]

^ That's exactly what I've been doing; turning off the A/C and running some normal air before shutoff. Interesting to hear that someone else does the same.



Might be same location as the first photo when considering the angle of the shot?

Many of those sprays contain alcohol which can degrade plastics and seals. If there's any coating on the evaporator, it might damage that as well. My Brother is dealing with an A/C leak on his Impala, which he says is commonly sourced at the evaporator core per forums and is a known issue with the manufacturer (TSB issued) An oil based product might be better for the materials but, anything like that, that remains, will be regularly inhaled. So the long term safety aspect is under consideration.

Alright, so you suggest just replacing the cabin air filter.

 

[XR650R]

Alright, so you suggest just replacing the cabin air filter.

That's really all you gotta do.

 

[Intuit]

Cabin Air Filter thread
https://www.fiestastforum.com/threa...ior-cabin-air-filter-on-your-fiesta-st.10816/

How To: Keep Crud Out of the Reservoir
https://www.fiestastforum.com/threads/how-to-keep-crud-out-of-the-reservoir.30410/
https://www.fiestastforum.com/threads/cleaning-beneath-windshield-cowling.25501/

Windshield Molding
https://www.fiestastforum.com/threads/windshield-moulding-replacement.26450/