F150online Forums - Vents won't change ... Whatzzzzzuppp ??!

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snkbtn99

Oct 23, 2006 08:07 AM

Vents won't change ... Whatzzzzzuppp ??!

I have a 2004 FX4 SC. LAtely I have been having issues when I go to change the location of the venting. Air is always bloing out the main front vents, yet won't switch when I want to go to defrost or floor vents only.

Are they vaccuum driven ? Where are the vaccuum lines on a 2004 SC ?

I have looked in the HVAC section for a location of these lines. No luck. Thanks.

demoncleaner

Oct 23, 2006 10:50 AM

I had this same problem with my previous superduty. It was vaccuum operated. The truck was still under warranty and they replaced a solenoid, I think....problem solved.

TeckBargins

Oct 23, 2006 11:52 AM

Balance.... checking!

snkbtn99

Oct 23, 2006 12:27 PM

Can someone shoot me a quickie picture on what lines I should be looking for looks like. I looked behind the battery and the only thing that I see is the PCM with a crap load of wires coming out ...

QUIKSVT

Oct 23, 2006 01:53 PM

I have the same problem. I think it is a new system design. some say it hangs up on something.
Josh

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