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Old 06-29-2016, 10:07 PM   #11
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Quote:
Originally Posted by SheepShagger View Post
Is this what you mean?
MAX AC ASSIST AC Control Valve for 1994-2003 7.3L

Is states 7.3psd but it's valid for a lot of vans also. Stops the coolent flowing into the cabin heat exchenger.

If you are going to do it, I personally think this is a better way, as rather than blocking the flow, it bypasses the core completley.
Heater Bypass Mod: Cooler A/C! - Ford Truck Enthusiasts Forums
I did the MAX AC mod from Diesel Site. Works GREAT! no more warmer air issue. Plus the AC is SO COLD! Installs above alternator in the coolant line, on the left side of the tee.
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Old 06-30-2016, 08:59 AM   #12
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Glad to hear this. I just received mine in the mail, just need to find time to install it. Did you have to drain the radiator?
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Old 06-30-2016, 11:26 AM   #13
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I did have my radiator drained for other work. But I wouldn't imagine it would loose much. Just make sure to clamp hose left side of cut and should be fine.
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Old 06-16-2017, 06:46 PM   #14
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So I installed the maxair and hooked the vacuum up to the blue tube in the dash, but I only get air blowing through the defrost vent. Is That the right one? I chose port 4 (blue) per Scalf77 recommendation which gives you vacuum in vent, A/C, and MaxA/C.

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Old 06-16-2017, 07:57 PM   #15
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Did you put a T in the line, it just T's into the blue or Port 4. It should not change the vent's.


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Old 06-17-2017, 05:41 PM   #16
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Originally Posted by Scalf77 View Post
Did you put a T in the line, it just T's into the blue or Port 4. It should not change the vent's.


-greg
Yes I put a tee in the line. As soon as I do, I only get air through the defrost vent. When i take the tee out I functions normally.

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Old 06-18-2017, 08:19 AM   #17
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So i guess I would suspect a cracked hose or a problem with the airmax valve.
The vacuum is no longer getting to the vacuum control motor for the floor/panel door, so I would suspect a leak.

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