Vacuum solenoid block off for ac? - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 05-25-2012, 06:50 PM Thread Starter
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Vacuum solenoid block off for ac?

Auto lock hubs don't work and the blower blows through the windshield defroster only. I've replaced my hub seals and lines and it doesn't bother me that the hubs don't auto lock but I would love for my ac to work. Is there a solenoid I can block off so my blower and ac work properly?
Sorry if it's been covered I'm on my phone and it's not the easiest to search with
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post #2 of 12 Old 05-25-2012, 07:22 PM
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Somewhere you have a vacuum leak or just a general lack of vacuum. That's what controls the blend door that changes from defrost to vent to floor.


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post #3 of 12 Old 05-25-2012, 08:14 PM Thread Starter
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So no matter way I look at it, I need to fix that issue for my AC to work, I cant have AC working and just have my hubs not auto lock? Damn
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post #4 of 12 Old 05-25-2012, 08:29 PM
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Check under your dash on passenger side, there is some vacuum lines there that may have come unplugged. If you are sitting in passenger seat it would be right above your left foot. A white block with about 5 lines hooked to it, if I remember right.

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post #5 of 12 Old 05-25-2012, 08:33 PM
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The vacuum control solenoid is also a common leak source

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post #6 of 12 Old 05-25-2012, 08:34 PM
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The AC working is different.
The blend door is the issue. You can cap off the lines to the hubs if they are the issue, but you said you just replaced them.


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post #7 of 12 Old 05-31-2012, 01:10 PM Thread Starter
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Just thought I'd update this. I am getting power to the vacuum pump but I do not hear it turn on or anything. I'm installing a new one tomorrow and that should fix my problem Im hoping.
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post #8 of 12 Old 06-01-2012, 05:13 PM Thread Starter
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Fixed my issue sort of. I had to plug the red line on the solenoid and now I have working HVAC and AC Just need a new line and should be good to go.
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post #9 of 12 Old 06-01-2012, 05:19 PM
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So you have a leak somewhere sounds like.


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post #10 of 12 Old 06-01-2012, 05:23 PM Thread Starter
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yup, but the first issue was my vacuum pump wasn't turning on. I will track the leak down but at least now I know everything else is working. It hit damn near 30*C the other day and black leather made it quite the oven haha
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