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No ac in cab

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Old May 18, 2013 | 06:00 PM
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Default No Cab AC

Ok my line is charge and getting ice cold, Im sure theres no leaks. under the hood. the cab is getting no cold air. Ideas people. vents are blowing air
 
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Old May 18, 2013 | 06:35 PM
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Default No ac in cab

I have a completely new ac system, there is no leaks and the passenger side ac unit is ICE COLD. Im not getting any cold air in the cab. ANy Ideas
 
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Old May 18, 2013 | 10:27 PM
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Do the vents change? If they don't maybe you have a vacuum leak somewhre.. not sure if its a flapper from hot to cold or not.. but if it is a vacuum leak would keep the flapper from moving to change it. also have you turned the ac on and checked inside the cab against the firewall to see if its cold?
 
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Old May 19, 2013 | 09:47 AM
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Temp is controlled the by blend door, which on your truck is cable operated. It's possible the door broke away from the axle it pivots on, but, only way to test that theory is to pull the heater box to look. (which means pulling the dash....)

Does outlet temp change as you turn the ****?
 
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Old May 19, 2013 | 08:43 PM
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Did you just charge the system, if so how much did you put in? Too much or too little will cause warm air to blow out.

Is the compressor engaging normally? Is there frost/condensation on high psi line between condenser and evaporator? It would also be real helpful if you rented a nice ac gauge set and got the high and low side readings.
 
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Old May 19, 2013 | 09:00 PM
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Default ac OZ total

How many oz will a empty ac system take
 
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Old May 19, 2013 | 09:02 PM
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From what I understand, the AC system takes a 2 lb charge. No leaks hopefully?
 
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Old May 19, 2013 | 10:07 PM
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it should say on a sticker on the front rad cross member
 
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Old May 20, 2013 | 04:27 PM
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Is the blend door working?
 
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Old May 20, 2013 | 04:55 PM
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Enough with the multiple threads on the same topic please bud. You need the right equipment to work on an AC system. The Haynes AC manual will give you info on most of these questions and will let you know the hazards of working on an AC system. I suggest you get it. You can be seriously hurt.
 

Last edited by zman17; May 20, 2013 at 04:58 PM.
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