Charged AC and having issues

[NCFury1963]

I changed the AC over from R12. The smaller hose gets cold but the larger hose stays warm. The air coming out is not cold at all. I am going to admit that working on an AC unit is not in my expertise.
Does anyone have any ideas that may help? It gets hot here in the south and I admit that I am spoiled by an air conditioner.
Thanks

 

[gearheads78]

I changed the AC over from R12. The smaller hose gets cold but the larger hose stays warm. The air coming out is not cold at all. I am going to admit that working on an AC unit is not in my expertise.
Does anyone have any ideas that may help? It gets hot here in the south and I admit that I am spoiled by an air conditioner.
Thanks

Heater control valve shut and heater control doors diverted correctly?

 

[rexus31]

Did you swap out the EPR Valve on the Compressor for a Thermostat?

Removing EPR Valves when Converting Your Mopar to 134a | Classic Auto Air

You'll probably need to change the Receiver/Dryer too.

Mopar OEM Factory Air Conditioning Parts & Restoration Services

 

[NCFury1963]

Did you swap out the EPR Valve on the Compressor for a Thermostat?

Removing EPR Valves when Converting Your Mopar to 134a | Classic Auto Air

You'll probably need to change the Receiver/Dryer too.

Mopar OEM Factory Air Conditioning Parts & Restoration Services

No I did not change out the EPR valve. I really appreciate the tip. I hope that will do it. I will let you know how it goes.

 

[rexus31]

No I did not change out the EPR valve. I really appreciate the tip. I hope that will do it. I will let you know how it goes.

You'll have to change/restore the Receiver/Dryer too.

 

[NCFury1963]

Heater control valve shut and heater control doors diverted correctly?

Good thinking. I will check this ou . Thank you

 

[NCFury1963]

You'll have to change/restore the Receiver/Dryer too.

Ok. I will do that. Thanks again.

 

[rexus31]

What was the verdict?

 

[NCFury1963]

What was the verdict?

I had a medical issue pop up and I haven't been able to get on the AC as of yet. I was wondering what kind of thermostat do I get for the AC conversion?

 

[rexus31]

I had a medical issue pop up and I haven't been able to get on the AC as of yet. I was wondering what kind of thermostat do I get for the AC conversion?

Sorry to hear that; I have to idea.

 

[commando1]

This.

It's called an a.c. compressor cycling thermostat switch. Lots of them on ebay.

You mount it on the firewall, drill a hole into the heater box, and stick the probe into the evaporator fins.
You wire your compressor thru this first.
If the evaporator ices up, the thermostat switches the compressor off to de-ice
the evaporator. When the probe senses above 32°, it turns the compressor back on.
You use this when you remove the EPR valve on the R2 compressor on your 134a conversion.

When drilling your hole, please do not drill into evaporator. Not good.

 

[NCFury1963]

This.

It's called an a.c. compressor cycling thermostat switch. Lots of them on ebay.

You mount it on the firewall, drill a hole into the heater box, and stick the probe into the evaporator fins.
You wire your compressor thru this first.
If the evaporator ices up, the thermostat switches the compressor off to de-ice
the evaporator. When the probe senses above 32°, it turns the compressor back on.
You use this when you remove the EPR valve on the R2 compressor on your 134a conversion.

When drilling your hole, please do not drill into evaporator. Not good.

Thank you brother. You have just helped me out tremendously.

 

[NCFury1963]

Sorry to hear that; I have to idea.

Thank you.

 

[cantflip]

The smaller hose gets cold but the larger hose stays warm.

BTW... When you get back to this... the small lines will be HOT to make the big lines COLD/COOL... A/C is just a matter of exchanging heat, and not very efficiently in a old car system... lots of heat on the pressure side to provide enough cooling for the inside of your car... You may have an expansion valve issue if the temperatures don't get cold enough on the low side...

 

[NCFury1963]

BTW... When you get back to this... the small lines will be HOT to make the big lines COLD/COOL... A/C is just a matter of exchanging heat, and not very efficiently in a old car system... lots of heat on the pressure side to provide enough cooling for the inside of your car... You may have an expansion valve issue if the temperatures don't get cold enough on the low side...

Thank you for the advice.

 

[bluefury361]

Give vintage Air a call. They have a answer for every question you have.
I used one of their Sanden type A/C compressor conversions on my 69 and could not be happier.

 

[NCFury1963]

Give vintage Air a call. They have a answer for every question you have.
I used one of their Sanden type A/C compressor conversions on my 69 and could not be happier.

Thank you sir. I will do that.

 

[NCFury1963]

Ok. So I had to buy a new compressor, replace the dryer and my condenser is beine cleaned out. I hope to have my AC running before it gets cold, but it has been a job and cut into my reupholstering fund considerably.
I thought boats were money pits. LOL

 

[commando1]

but it has been a job and cut into my reupholstering fund consid

Sounds about right. Godspeed.

 

[rexus31]

I thought boats were money pits. LOL

What did you think? These are called "land yachts" for a reason!