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Super Duty & Heavy Duty 1999 to current Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines SPONSORED BY:

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  #31  
Old 07-10-2012, 04:29 PM
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jaycenk jaycenk is offline
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lol I bet this is going to become a Really popular mod here as the temps have been reaching triple digits in most parts of the US. I live in FL and I will be poping the hood to see if I have one or not tonight.
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  #32  
Old 07-14-2012, 08:02 PM
dgrooman dgrooman is offline
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Quote:
Originally Posted by Robby Nash View Post
Im with dgrooman I would like to do the same mod just a little lost as to how it all hooks up....
Robby: the hook up for the vacuum line was easy once you get into it. Use the F connector with the top post going into the silver cannister (the actual vacuum pump I believe) using one of the assorted rubber connectors, the middle post reconnects the line that went into the silver cannister originally using the clear rubber elbow connector, then the new hose connects to the bottom post again using one of the assorted rubber connectors. You can pull the rubber grommet out of the firewall that already has a line going through it and put a cut into it so that it will accommodate the new line. The hardest part is feeding the line up to the new valve. Once I had the new vacuum hose in place I simply cut the hoses going into heater core and placed the valve as the others have. Be sure to get hose clamps (I didn't think of it when making the shopping list and had to go back out for them). I can verify the valve does move/change positions when using Max AC, but I have not gone for a drive yet to determine how cold the air actually gets.
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  #33  
Old 07-14-2012, 08:33 PM
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Neil Neil is offline
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I put a vacuum controlled valve in my heater hose several years ago. I took it out for a test ride to get some numbers of the air temp at the vents driving, parked, valve open & valve closed. Here's the numbers I got:

Outside temp, 102 degrees @ 60 MPH...heater valve off...temp fluctuated between 42.6 and 43.3.

Outside temp, 102 degrees @ 60 MPH...heater valve on...temp fluctuated between 46.9 and 47.3.

Outside 102 degees @ 0 MPH...1200 RPM...heater valve off...39.0 degrees.

Outside 102 degrees @ 0 MPH...1200 PRM...heater valve on...44.6 degrees.
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  #34  
Old 07-15-2012, 10:17 PM
dgrooman dgrooman is offline
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What did I do wrong? Finally went for a test drive and when in Max AC there was practically no air flow coming from the vents even with the fan on the highest setting. What could have generated this result?
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  #35  
Old 07-15-2012, 10:30 PM
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FYI-my 05 lariat cc has this valve already. So if anyone sees a similar truck you could also pull it off that

Dgrooman-did u hook the vacuum line up to the front of the valve? Mine came off one day an my idle was a little off and it wouldn't blow through the vents barely. I ended up hooking it up back on wrong and finally took a look at someone else super duty and figure out what I did wrong
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  #36  
Old 05-20-2013, 11:32 PM
fordtruck661 fordtruck661 is offline
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I know this thread is kind of old but what is that valve called?

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  #37  
Old 08-19-2014, 04:55 AM
nsboyd1210 nsboyd1210 is offline
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I know it is an old thread but for the sake of completeness:

Heater Control Valve - MOTORCRAFT YG-350

On Amazon I noticed that a couple people noted that the off-brand failed much sooner than the Motorcraft brand.

Nelson

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Old 08-19-2014, 04:55 AM
 
 
 
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