HELP! 2003 Escalade AC Problem

[04YukonAWD]

Bowzer there was some type of debris in the orfice tube but didn't pay much attention as I had the new one already.

I have not yet recharged the system as I have already done it twice and came back with no front a.c still. But that was the old office tube.

 

[Bowzer]

That should do it, after the orifice its wide open to the accumulator. Good luck!

 

[04YukonAWD]

You think I should recharged the system before going to change the evaporator core?

 

[04YukonAWD]

Update:

I went ahead and put freon in the system but out of luck it is still the same problem. Return line from the evaporator still warm.

This time the low line actually froze up with less than 30psi in the system. It seems like the evaporator core is clogged up to me.

 

[osiris94ej]

If you aren't evacuating the whole system and putting a vacuum on it before charging it up you may have trapped air inside. Only thing you can do to check for a blockage is evacuate the system and unbolt the evaporator lines and blow air through. Should flow through easily.

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[04YukonAWD]

This time I did not vacuum the system. I will try and blow air through the evaporator core and see if get air out of it.

 

[Bowzer]

That'd be the logical thing to check but doubt anything that big enough to clog the coil would pass through the orifice tube. Not sure how you're measuring how much refrigerant putting in but 28psi = 32° for 134a so you might just need more charge if the suction line is frosting now. Oh and please pull a vacuum. Air is non condensible and will raise your head pressure and reduce the effective heat transfer area of your condenser.

 

[04YukonAWD]

It's just pretty weird on how troublesome this has been.

It all started after the high pressure valve leaked freon but I loosened the valve cap and it stop leaking.

 

[04YukonAWD]

Border In other words it's highly uncommon for the evaporator core to be clogged?

 

[osiris94ej]

Not normally. Usually they leak if anything.

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