09-06-2015, 11:16 AM
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#1
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Where is the AC drain line?
I'm trying to clean out my AC drain line as I'm getting the moldy smell from my AC and I don't see water under the car after running the AC. The problem I'm having is actually finding the drain line. With only about 8 inches of lift from my ramps I'm looking at everything within a few inches of my face laying on my back. I found the line for the fuel overflow but no AC line. Do I need to remove the plastic pan to see it? Based on the diagram attached it should right where I'm looking. Any help is appreciated. Thanks.
http://i167.photobucket.com/albums/u121/frankboxster/NewPicture.png
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03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-06-2015, 12:36 PM
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#2
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
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It is directly under the heater box.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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09-06-2015, 01:24 PM
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#3
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still plays with cars...
Join Date: May 2011
Location: Baden, ON, Canada
Posts: 1,088
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Would a blockage cause
water to back up and drip on your feet & ankles while the AC is running?
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Six speed 2000 Boxster S
Arctic Silver on Metropol Blue | LN Dual Row IMSR | Arctic Silver console, spoiler frame & bumperettes | Crios mod | Technobrace | RoboTop module & modified convertible top relay for one-touch roof operation
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09-06-2015, 09:36 PM
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#4
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by BoxsterSteve
water to back up and drip on your feet & ankles while the AC is running?
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Yes. I've had a few drops hit my fit while making some quick left hand turns.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-06-2015, 09:37 PM
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#5
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by JFP in PA
It is directly under the heater box.
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Am I going about it wrong by trying to get to it from under the car?
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-06-2015, 10:11 PM
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#6
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Registered User
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
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Yes, I think its best done from inside.
IIRC if you peal back the carpet from the front and center of the passenger foot well, you can see where the tube runs from the AC/heater box through the floorboard. I believe you can simply pull it out on both ends and clean it.
There may be residual water in the box the comes out when you pull out the tube so put some absorbent material down before you disconnect it from the box.
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09-06-2015, 10:35 PM
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#7
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by thom4782
Yes, I think its best done from inside.
IIRC if you peal back the carpet from the front and center of the passenger foot well, you can see where the tube runs from the AC/heater box through the floorboard. I believe you can simply pull it out on both ends and clean it.
There may be residual water in the box the comes out when you pull out the tube so put some absorbent material down before you disconnect it from the box.
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I'll give it try in the morning. Thanks.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-07-2015, 07:17 AM
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#8
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,584
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Quote:
Originally Posted by thom4782
Yes, I think its best done from inside.
IIRC if you peal back the carpet from the front and center of the passenger foot well, you can see where the tube runs from the AC/heater box through the floorboard. I believe you can simply pull it out on both ends and clean it.
There may be residual water in the box the comes out when you pull out the tube so put some absorbent material down before you disconnect it from the box.
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It is best done from underneath by blowing low pressure air through it, never using a wire or any other solid object to push through it. Also, do not pull on it, if it becomes dislodged from the heater box, it can be difficult to reconnect.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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09-07-2015, 07:45 AM
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#9
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,797
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Quote:
Originally Posted by Porsche9
Yes. I've had a few drops hit my fit while making some quick left hand turns.
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I get that from time to time when its hot and humid. I found it to be condensation on the air vent tube
YMMV
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
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2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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09-07-2015, 11:57 AM
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#10
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by JFP in PA
It is best done from underneath by blowing low pressure air through it, never using a wire or any other solid object to push through it. Also, do not pull on it, if it becomes dislodged from the heater box, it can be difficult to reconnect.
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Thanks JFP. I went under the car and can't find the drip line for the AC. I found what I believe is the fuel overflow drip line in the first photo but not the AC drip line. Do you have to remove the under body pan to find it?
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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09-07-2015, 02:05 PM
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#11
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,584
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Quote:
Originally Posted by Porsche9
Thanks JFP. I went under the car and can't find the drip line for the AC. I found what I believe is the fuel overflow drip line in the first photo but not the AC drip line. Do you have to remove the under body pan to find it?

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It should come through, but may have been inadvertently blocked behind one of the belly panels when it was removed previously.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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09-07-2015, 03:13 PM
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#12
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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I guess it's mean getting on my back and removing the belly pan. Thanks.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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