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Old 10-12-2014, 06:48 AM   #1
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2006 Ford 6.8L Vacuum Line Missing

I just bought a 2007 Damon Daybreak on a 2006 Ford chassis. On the drive home the check engine light came on and it started having a hesitation in the idle. Once home I checked the fault codes and got:
P0171 - System Too Lean Bank 1
P0174 - System Too Lean Bank 2
P2195 - O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1
P2197 - O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1

Doing some checking on the internet these codes are indicative of a vacuum leak. So I started poking around. At the back of the intake manifold is a vacuum port that had a small piece of old rubber stuck to the side of it and sucking air. I can not find a hose laying loose anywhere. So either the hose is completely gone and I don't know where the other end of it is, or? I put a blue plastic cap on the port and the idle hesitation is gone, along with the fault codes. My question is can anyone confirm or deny what this vacuum port is for?
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Old 10-12-2014, 07:33 AM   #2
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I think you should post this on the Ford chassis forum.

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Old 10-12-2014, 07:59 AM   #3
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Originally Posted by dabrooks View Post
I think you should post this on the Ford chassis forum.
Okay. Thanks for that.
didn't realize there was a Ford Chassis forum.
Consider it posted.
If I knew how to delete this I would.
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Old 10-12-2014, 11:33 AM   #4
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By the way, welcome to the forum!

2005 Country Coach Inspire, #51334. C9 CAT
2012 Nu Wa 363RSBDA
2016 Ford F-350 Dually 6.7
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