A/C stopped blowing cold

[vnm]

Howdy everyone!
Might be bit of a dumb question here. Have a 2004 Wrangler which started blowing warm AC today. Seemed to have been on the decline past few days but very noticable today.
Took a look under the hood and all the AC lines are ice cold and pressure seems to be fine didnt notice any leaks anywhere. Compressor clutch is also engaging just fine.
Not sure what else to check before taking it up to a shop.
Thanks for any advice!

 

[DuckNut]

What were your pressure readings?

 

[NashvilleTJ]

What were your pressure readings?

Probably good enough if the pump is engaging, and running constantly. I’m thinking blend door problem.

 

[Deputy Dodge]

Sooooo, everything is fine but you want advice? Only 1 line should be cold. The rest will be warm or too hot to touch. How often is the clutch "engaging"? It shouldn't be much at all. Define what seems to be fine pressures are, and at what temperature and rpm. If you want help you will need to be a little more specific.

 

[YonderWalnut]

Try refilling the icebox. You can usually buy big bags of the stuff at gas stations

 

[mxz800]

 

[DuckNut]

Probably good enough if the pump is engaging, and running constantly. I’m thinking blend door problem.

If the freon pressures are not right the ac wont blow cold and the compressor will still engage.

 

[NashvilleTJ]

If the freon pressures are not right the ac wont blow cold and the compressor will still engage.

If the pressure is low - such as with a leak - the compressor won’t engage. Not sure what happens if the pressure is too high? What would cause the pressure to be high enough for the compressor to engage, but not chill?

Since the OP said the pipes were cold, something is happening.

 

[Deputy Dodge]

He said they were all cold as ice, which means he doesn't know how the system works or what lines he's actually touching. We need a lot more answers. Pictures would help but that's a ways off.

 

[DuckNut]

If the pressure is low - such as with a leak - the compressor won’t engage. Not sure what happens if the pressure is too high? What would cause the pressure to be high enough for the compressor to engage, but not chill?

Since the OP said the pipes were cold, something is happening.

If the low pressure is within range and he has a clogged oriface tube the high side won't be within range and the low side will still be ice cold. It could also be so ice cold it is freezing inside the lines.

Way more info needed than the lines are cold when I touch them.

 

[BC Moto]

I just serviced my AC as it wasnt blowing cold at all. If you overfill the system the compressor will not engage same as if it was too low. I used the vacuum pump to evac the system and then refilled it. If you use the refrigerant that has a gauge on it when it click on the pressure should drop but you only want it to drop to the low side of filled portion. If it drops below that then its low on refrigerant.