Hello smart people:

My air conditioner will not drain its condensation. As a result, cold water pours on my feet when making a right turn

I believe there are multiple drains for the unit, but they collect into one drain under the car, through a check valve. If this is correct, I suspect the check valve is stuck or clogged.

Can the valve be accessed from under the car?

Thanks in advance

 

I have never seen a check valve in a drain line .
Try blow a little air up the drain line from below the car .
Low psi , volume ...

 

I used a strand of 12-2 house wire to gently clear the holes circled in the pic.

 

Thank you both, I'll try these.

Indycam, my PET shows a check valve just above the pictured piece

 

+1. I had the same problem and it was easily fixed. See https://rennlist.com/forums/showthre...light=wet+feet

Good luck on the repair

 

Fixed!

Thanks to all for the ideas. Here's what I did:

1) Put the car on stands and got under. I easily found the drain as pointed out in your picture.

2) First I tried the "wire reaming" - I got some dirt and a few drops of water out, but the clog was too heavy to clear this way.

3) The drain output piece is very narrow and the openings to the drain pipes are recessed, so I needed to dig further. I removed the fuel pump cover to access the output piece. There is one machine screw holding it to the floor sheet metal. You can push aside (a little) the fuel pipes and wiggle the drain output piece out of there.

4) Now the 2 drain pipes are exposed. The forward (smaller) one was completely clogged with dirt, sand and bits of crud. Ironically, this is the one with the "check valve," which is actually just a short rubber piece with a duckbill at one end.

5) I thought about blowing some air, but I didn't really want to push all of that stuff back up into the AC unit. So, I rigged a small vacuum setup by duct taping some reducers onto my shop vac. I got the hose down to about 3/8", which just fit into the smaller drain pipe.

6) Turned on the shop vac and tons of crud was sucked out of the pipe, followed by a pint or so of water!

7) Put it all back together. The output piece is tough to get back in, but will go if you push the fuel hoses aside. The tricky part is making sure the drain pipes go into the holes of the output piece.