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1968-Present E-Series Van/Cutaway/Chassis Econolines. E150, E250, E350, E450 and E550

Rear AC isn't cold

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Old Jun 20, 2011 | 12:53 PM
  #1  
hhowell1990's Avatar
hhowell1990
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From: Walla Walla, Wa
Rear AC isn't cold

We're about 200 miles into an 1100 mile road trip in our van and the rear A/C is blowing warm, already checked the air intake at the back of the van and there's nothing close enough to it to block it, does anyone have a suggestion as to what it can be? Van is an '05 e-350 XLT with the 5.4 gas engine

Edit: the problem is intermittent, if we turn the rear A/C off completely for 5 mins or so it will be cold when we turn it back on for a few minutes
 
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Old Jun 21, 2011 | 06:39 PM
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ydaveitsu's Avatar
ydaveitsu
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Sounds like it might be the heater control vacuum valve
 
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Old Jun 21, 2011 | 10:26 PM
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shrtbus
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I had the same symptoms on my '05 E350. The vacuum actuator for the rear A/C was broken. I took a piece of wood and wedged the door between the heater core and evaporator. That allowed full cold air always. When winter comes around I'll put it back to heat mode.
 
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