A/c not working properly
 

My a/c only blows cold when I'm moving, as soon as I come to a stop within 30 seconds it gets warm? It's fully charged. Any ideas?


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If it came here I would hook my gauges and look at pressures, clutch engagement and airflow obstructions.
How have you verified its fully charged?

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this is the right way to check things out.

Is your fan clutch working correctly?

Put the guages on it, the high side would start at 225, and at the start of the 2nd compressor cycle engagement, it is going up to 450psi. The low side Would vary from 30-40psi. The fan clutch seems like its operating correctly, the truck does not over heat. But I did notice a lot of grease/crime build up on the radiator.


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any ideas?

Ive had 2 dodges do this same thing. I'm thinking it may be my orifice tube causing my problem, but My current truck I know has a leak so I am going to go thru the system. clean and rebuild it.
Orifice tube is what converts the liquid back into a gas or visa versa. Its usually right before it goes into the condenser to get rid of the heat created by the process. So if the orifice tube is worn I believe it could also be causing the problem. I am by no means an expert, but from I do understand about A/C this is what I would try first.

I ordered a new line with orifice. I should have it in by the end of the week. Hopefully it fixes it..


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mine was doing that and it turned out to be a oily/dirty radiator from blow by vapor coming from the puke bottle, i extended the breather tube down and steam cleaned the radiator and that fixed the a/c problem

I'm gonna start by changing the orifice line, then I planned on cleaning that if the orifice doesn't fix it.


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