08-25-2019, 05:24 PM
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#1
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Elite Member
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Join Date: May 2013
Location: Los Angeles
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Real Name: C8H18 Mike
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Elite Member
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Real Name: C8H18 Mike
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Extended AC Drain mod
Not sure if this has been documented but here is my version. Pics to follow.
The AC drain fitting is a small aluminum pipe with a right angle bend towards the bottom of the firewall right above the steering rack on the passenger side. When the AC drains it leaks all over the rack, boot, tie rod ends, etc. It's annoying.
The aluminum drain fitting is secured to the AC evaporator housing via a rubber grommet on the firewall, and if you are careful you can wiggle the fitting out. Which I did. I installed about 18" of 3/8" ID vinyl hose from Home Depot that i had lying around onto the aluminum drain fitting on the outboard side.
I then snaked the drain hose assembly I made back up to the firewall starting outside the frame rail, under the rubber splash guard and up to the grommet. I lightly lubed the aluminum drain fitting and pushed it back into the grommet. Now you can trim the 3/8" hose to length and call it good.
Now, when my AC drains, it drains directly onto the ground and not on my steering and suspension components. This is roughly a $1 mod that takes about 10-15 minutes to perform and is worth about twenty bucks in piece of mind, to me at least.
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1999 Toyota 4Runner SR5 Sport 4WD, V6 5-Speed e-Locker-> 4WD 4runner Journal Thread
1999 Toyota 4Runner SR5 Un-Sported 2WD, V6 Auto -> 2WD 4runner Journal Thread
1959 Chevy 3100 1/2 Ton Pickup EVERYTHING done 'cept paint and body
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Last edited by octanejunkie; 08-25-2019 at 05:42 PM.
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08-25-2019, 08:47 PM
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#2
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Senior Member
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Join Date: Oct 2013
Location: illinois
Posts: 1,613
Real Name: Ron
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Senior Member
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I did similar on my 4th gen as it drains right on top of PS frame rail and mine has a large rotted hole on bottom of frame where the drips would collect and drip on ground, about 13 years of that did some damage. See my garage.
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08-25-2019, 10:52 PM
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#3
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Join Date: Jul 2012
Location: Odessa/Midland TX
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This is a part that Toyota Engineers failed!
I had to do the same on all 4 toyota's 1990 Hilux (not a big issue), 92 Corolla (was dropping right on to LCA), 97 4Runner (we all know) and 2000 LC (was dropping on to the sway bar frame bracket) and with the mod, all drops right to the ground!
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08-26-2019, 01:21 AM
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#4
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Join Date: Nov 2012
Location: Santa Monica, CA
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Real Name: Keith
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My 4Runner came to me missing the aluminum tube, so the water dripped out of the grommet directly onto the sway bar end. I took a hard plastic right angle elbow fitting (from the "Help" parts rack at Pep Boys), inserted it into the firewall grommet, and ran a black piece of fuel/vapor hose down to the frame rail, zip tied in place.
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09-15-2019, 10:03 PM
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#5
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97 SR5 4runner: 2" OME Lift, rear E-Locker, 231mm Tundra Brakes, 203K, B&M 70264 Tranny Cooler, Duratracs
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09-16-2019, 12:30 PM
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#6
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Quote:
Originally Posted by JBurt
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it's a surprising amount of water that drains out
here is the outlet from the evaporator
I routed mine on the outside of the frame rail
and then it's just zip tied to the sway bar
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09-16-2019, 04:52 PM
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#7
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Join Date: Jun 2019
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Isn't attaching it to the sway bar a bad idea? Haha
Need to do this on m mine
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09-16-2019, 05:56 PM
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#8
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Quote:
Originally Posted by jross20
Isn't attaching it to the sway bar a bad idea? Haha
Need to do this on m mine
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it's pretty close to the mount so I don't really see a problem with it. sway bars don't really move all that much and it's just a vac hose and cable tie.
This gets the dripping away from the frame. I could have fabricated a fancy bracket or something but this low tech solution seems to work good enough for me.
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09-16-2019, 05:59 PM
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#9
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Join Date: Jan 2019
Location: Earth
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I did this the other day while torquing the cam adjuster bolts following an alignment. Just used some clear polyvinyl hose that was laying around and zip-tied it to the bracket for the body bushing just at the hinge side of the front door.
And this is the "stock" end of it, for those who need better visual reference (or you could just drive it with the AC on and follow the leak):
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09-17-2019, 09:29 AM
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#10
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Quote:
Originally Posted by Brian.
I did this the other day while torquing the cam adjuster bolts following an alignment. Just used some clear polyvinyl hose that was laying around and zip-tied it to the bracket for the body bushing just at the hinge side of the front door.
And this is the "stock" end of it, for those who need better visual reference (or you could just drive it with the AC on and follow the leak):
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That looks more like it!
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06-10-2020, 07:32 PM
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#11
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Join Date: Dec 2011
Location: SF, CA
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DONE - Better late than never !
I'm surprised by the amount of water that drains out of the A/C but feeling better now that all that water is landing on the ground vs the steering parts.
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1999 "Highlander" V6 4WD E-Locker || TRD Supercharger, URD 7th Injector, 2.2 Pulley || Toytec Aluma Series Boss Suspension, SPC A-Arms, Durobumps, Overland Endlinks || B&M Trans Cooler || 231mm Tundra Brakes, SS Brake Lines || 17" TRD Pro Wheels || BFG KO2 265/70R17-C || TRD Exhaust || 01-02 Tail Lights || Original Owner
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10-19-2020, 11:12 PM
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#12
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Junior Member
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Location: Arizona
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Where can I find mine on the 5th gen ? I've only had the Runner for a month from new and the A/C smells already.
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10-20-2020, 08:55 AM
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#13
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Real Name: Patrick
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Quote:
Originally Posted by kev_runner
Where can I find mine on the 5th gen ? I've only had the Runner for a month from new and the A/C smells already.
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Try asking or searching in the 5th gen section bud. Or better yet take it to the dealership if it is still under bumper to bumper warranty.
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10-22-2020, 09:32 AM
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#14
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Quote:
Originally Posted by Bad Luck
Try asking or searching in the 5th gen section bud. Or better yet take it to the dealership if it is still under bumper to bumper warranty.
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found it, and it's now rubber instead of the metal... now it will be difficult to extend it.
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10-23-2020, 01:28 PM
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#15
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Elite Member
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Join Date: May 2013
Location: Los Angeles
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Real Name: C8H18 Mike
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Elite Member
Join Date: May 2013
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Real Name: C8H18 Mike
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Quote:
Originally Posted by kev_runner
found it, and it's now rubber instead of the metal... now it will be difficult to extend it.
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It's just condensate run off, shove a hose up there
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1999 Toyota 4Runner SR5 Sport 4WD, V6 5-Speed e-Locker-> 4WD 4runner Journal Thread
1999 Toyota 4Runner SR5 Un-Sported 2WD, V6 Auto -> 2WD 4runner Journal Thread
1959 Chevy 3100 1/2 Ton Pickup EVERYTHING done 'cept paint and body
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