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Old 03-15-2011, 02:13 PM   #1
Type2Teach
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Default Rear fresh air vents

'02 140" 10 pass

The other day it was raining and my wife was driving the sprinter around with the kids and she called me complaining that all the windows were fogging up. I hadn't thought about it before, but the only windows that open are the two front ones! I know that there are tons of posts about installing roof vents and slider windows (one just popped up recently), but I can't find much of anything about those vents in the rear of the van. It seems like they vent into the bumper, but I can't find any information about this in the service manual. Someone in a post mentioned they "removed the rubber flappers" from their vents, but I can't find what they are talking about. Anyone have any drawings or photos of these vents and air passages?
My thoughts are thus:
I have access to tons of old computers, and I was thinking that I could pull the 3" fans out of them and glue/screw two of them on the insides of the vents to pull air out of the van.
I really don't want to cut a hole in my roof, although I see lots of information and step-by-steps here on the forum. And putting in a new window seems to me to be pretty expensive. So that leaves me with the cheap/free solution- use the existing vents.
Any thoughts?
Joel in Philly
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Old 03-15-2011, 02:18 PM   #2
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Default Re: Rear fresh air vents

On the '02 passenger vans, there are vents located at the lower rear sides of the van, right next to the rear door. If someone pulled the panels off and put in insulation, they may have blocked these vents.

P3191808.JPG

I can't take my panels off easily, so I cannot see where the air vents to. But I do see a lot of dust from going on dusty roads - so air is circulating there. Gary J below indicates the exterior vents are hidden behind the bumper.

Last edited by hkpierce; 03-19-2011 at 08:50 PM. Reason: Added picture
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Old 03-15-2011, 02:56 PM   #3
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Default Re: Rear fresh air vents

Quote:
Originally Posted by Type2Teach View Post
The other day it was raining and my wife was driving the sprinter around with the kids and she called me complaining that all the windows were fogging up.
In many vehicles, selecting "defrost" will start the A/C to dehumidify the air moved by the fan. But, in my '02, the A/C has to be turned on as well to achieve this.
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Last edited by talkinghorse43; 03-15-2011 at 02:58 PM.
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Old 03-15-2011, 07:13 PM   #4
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Default Re: Rear fresh air vents

Here's the parts manual image of the Passenger Van Vent (part #19):
(it's under the vehicle, not on the outer surface.)
RearVent.gif

--dick
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Old 03-15-2011, 07:23 PM   #5
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Default Re: Rear fresh air vents

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Originally Posted by autostaretx View Post
Here's the parts manual image of the Passenger Van Vent (part #19):
(it's under the vehicle, not on the outer surface.)
Attachment 31187

--dick
So that vent that is enlarged in the picture, that's located under the van? Ok, that's what I'll look for. Because it doesn't look like what's inside the van.
Thanks, Dick.
Joel in Philly
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Old 03-15-2011, 07:32 PM   #6
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Default Re: Rear fresh air vents

I'm not an expert on doing links but if you go to cyclevan.com under their sprinter section they have some mini-vents that go into the sides of sprinter vans
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Old 03-15-2011, 08:25 PM   #7
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Default Re: Rear fresh air vents

Be brave. Just cut a hole in the floor. Mentally a bit tough to do but it works. See OrtonDIY-air vent post.
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Old 03-15-2011, 09:00 PM   #8
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Default Re: Rear fresh air vents

Quote:
Originally Posted by Graphite Dave View Post
Be brave. Just cut a hole in the floor. Mentally a bit tough to do but it works. See OrtonDIY-air vent post.
Graphite Dave's reference:

http://sprinter-source.com/forum/showthread.php?t=14979

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Old 03-15-2011, 09:35 PM   #9
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Default Re: Rear fresh air vents

Quote:
Originally Posted by Graphite Dave View Post
Be brave. Just cut a hole in the floor. Mentally a bit tough to do but it works. See OrtonDIY-air vent post.
Naaah. I'm brave, but I'd rather utilize the vents that are already there.
Checked under the van, but couldn't find the vents that Dick was talking about. Then I looked in the rear corner panel, directly under the tail lights, and pulled the bumper cover back. There they were. They were rubbery and had flaps. Ok, so next step is to get some small fans and see what they do when mounted inside the van at the vents.
Joel in Philly
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Old 03-16-2011, 04:17 AM   #10
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Default Re: Rear fresh air vents

The vents behind the corner bumper covers really can't be reached from inside the van. I'm the guy that took the flappers off to let the vents act as an air intake when I run my ceiling fan to exhaust the warm air in summer. They were only taken off about a month ago and with our rain in No. California I haven't been on a dusty road yet to see if they draw any dust in. I have not smelled any diesel exhaust, but driving with open windows could change that. The fans sound interesting, but with the windows up, the heater fan should move plenty of air out the vents. I closed all the doors and windows, put the heater fan on high, and could feel air coming out through those rear vents under the bumper corners.
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