I got the Toyota evap cleaning kit and while I know this little hose under the hood dripping water must be the condensation drain, my cautious side says, “Hey, why not ask before blasting a whole can of cleaner up in there?”

So this must be it, right?

yep, it is, go ahead and blast away!

just curious though, what are you supposed to achieve by blasting a cleaner into the drain hose?...is it to prevent blockages??

what is this hose?

What hose is this?

Leaky Hose coming out of Passenger Side

A/C wet dog smell

YouTube

https://www.youtube.com/watch?v=mMj3h3-un_g

The dreaded Bossman link list, which I seek to avoid at all costs lest I appear to be a clueless newb. ;-)

I searched with no luck, in the forum and on Google, using a variety of relevant terms. Not sure how I didn’t get at least one of those. In fact, I was quite surprised. I kept getting 3rd & 5th Gen threads on here despite specifying 4th Gen in the search bar.

In any case, thanks!

@earthrealm , others who have done it say all kinds of gunk comes out, which isn’t surprising given that the “youngest” 4th Gen is now 10 years old and that the target area is often warm & moist. Cleaner components work better, last longer, and in this case, yes, it should also help prevent blockages. That’s always good considering a blocked drain usually leaks onto the passenger side carpet.

What kind of cleaner are you planning on using? I think our drain line is clogged a bit. Not nearly as much condensation puddle under car as I would expect, and occasionally the passenger floor is wet and warm (was soaking after long road trip). Are you doing just simple green, or a pressurized can of something?

Bluesky 07 indicated in his first post that he was using the Toyota A/C Evaporator Cleaning Kit.

Here is a post from a different thread of what the kit looks like.

https://www.toyota-4runner.org/1829516-post12.html

Your frame doesn't look rusty but you might consider rerouting or extending it so it doesn't drip onto your frame.

Thank you, I missed that part some how.

Just did this last week. Super easy and it's nice seeing that water dripping under my truck and not on the frame any longer.

A good suggestion by @Inv4drZm … otherwise your frame rail might look like the rusty one in this post.

https://www.toyota-4runner.org/2794941-post44.html

Wow, I didn’t even know a cleaning kit existed for that! My daughter’s Camry has what I believe is a blockage already based on some of those past threads on the “wet passenger rug”. I wonder if this can fix a blockage that’s already there and flush it out? I may have to get some for my 4Runner as well, even though I don’t have a problem yet. I’m definitely going to take that suggestion of rerouting the line away from the frame as well. I always thought that was a poor place for it to drip...

I plan to do exactly that after the cleaning. Hoping to use the tubing that came with the kit but I can get whatever I need. I never realized Toyota had designed the drain this way (i.e., so poorly) until recently.

Exactly! I did as my frame was badly rusted under passenger door from what I believe was years of that drip on frame. See my Garage for info.

Got a roll of fuel line at the house if you need some. Can meet up next time I'm up your way.

Thanks, I really appreciate that. What size? Does it slip into or over the current tube?