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Old 08-28-2014, 06:09 PM   #1
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Vacuum Line Mystery

This photo is from the passenger side of my 2003 V6. I'm not sure where this vacuum line should go, I capped it off and it's not throwing any error codes. It's for sure not the vacuum line for the air condition ducks in the car.

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Old 08-28-2014, 06:28 PM   #2
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On my 01 there are TWO vacuum lines that run through the firewall into the interior of the car on the passenger side. Both of the vacuum lines branch off of a single vacuum line.
See if you can locate the vacuum line that is routed to that side of the car from the intake manifold. There must be a "Tee" or a "Y" or something of that sort that it plugs into.

You're going to have a vacuum leak until you find it...
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Old 08-28-2014, 06:39 PM   #3
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Well it's not a stock setup with the manifold and the vacuum lines
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That was on a tee with the other line going into the firewall but when I had both lines hooked to the tee and one source from the manifold my air ducks in the car would change from defrost to the any other vents. I used my vacuum line tester and could build up pressure and get my vents to move. When I tried it on the mystery line I could never build up pressure. So that is either an open line or some large volume tank connector.




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Old 08-28-2014, 07:01 PM   #4
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As long as there are no leaks on the vacuum side it shouldn't be a problem then.
It sounds like that line isn't connected to anything...
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