A/C taking awhile to get cold

[Zach58]

I have a 2015 ram 1500. About a week after I got it (almost 2 years ago) my a/c motor broke so I ended up getting a new motor and condenser.
It has worked fine until somewhat recently. It takes a good 20-30 mins to start blowing cold air. I’m from Florida so it’s always hot out but definitely has been hotter since it’s summer. I’ve noticed if I don’t drive it for a couple days, it will take longer to start getting cold. Once it’s cold tho it stays cold.
Anyone have any ideas?

 

[turkeybird56]

Sounds like either uneven pressures between high/low side, out of specs or low Freon. But somebody better than me needs to chime in. Also, just a thought evaporator popped in. But a better mechanic than me, a HVAC knowledgeable forum member needs to chime in.

 

[MAC830203]

Slow pressure leaks remove the fake Freon and leave the oil. Best bet is to get it serviced. They should purge and recharge. The system needs a balanced Freon/oil content. Too much pressure, it’s a non stop off and on.
Too little a charge, and it takes a while to build up pressure to bring High pressure side to blow cold.

 

[Zach58]

Slow pressure leaks remove the fake Freon and leave the oil. Best bet is to get it serviced. They should purge and recharge. The system needs a balanced Freon/oil content. Too much pressure, it’s a non stop off and on.
Too little a charge, and it takes a while to build up pressure to bring High pressure side to blow cold.

Ok sounds good. Thanks man

 

[Zach58]

Sounds like either uneven pressures between high/low side, out of specs or low Freon. But somebody better than me needs to chime in. Also, just a thought evaporator popped in. But a better mechanic than me, a HVAC knowledgeable forum member needs to chime in.

Ok thanks man!

 

[GTyankee]

I keep the HVAC on Recirculate, no fresh air enters the cab

 

[Jeepwalker]

There's got to be a good auto AC shop near you. You might want to take it in for a diagnosis & repair (if it needs repair).

 

[MRFREEZE57]

The only way to know what is going on is to put a set of gauges on it and see what your pressures are doing.

 

[crash68]

They should purge and recharge. The system needs a balanced Freon/oil content. Too much pressure, it’s a non stop off and on.
Too little a charge, and it takes a while to build up pressure to bring High pressure side to blow cold.

Um...not really
Oil doesn't have anything to do with the AC cooling, it just keeps the compressor able to spin.
It's the low pressure control that will cause a compressor to cycle on/off usually due to being low on refrigerant. Too much pressure can raise the evap temperature above design range and the cooling capacity is diminished.

 

[greg mayrhofer]

check to see that your a/c coolant is at the proper pressure, neither over or under, second the transducer or expansion valve could be faulty

 

[origsquig]

It's the new freon they use, what helps is using the recirculation button turned on, then you are only recooling inside air instead of outside air, also it does take a bit to bring temps down with new systems, measure your temp at one of your vents you should be reading in the mid to upper 30's degrees. https://www.acdiagnosis.com/post/pr...perature-what-temperature-should-the-a-c-blow