A/C questions - Dodge Diesel

Jschlachta · 05-30-2012, 04:55 PM

Gaoing to pull apart my a/c when i replace the heater core and will be replacing Expansion valve, drier, evaporator, and compressor, was going to put in new condenser but having a hard time finding one. just looking for some incite on getting better cooling when I put back together.

Current measurements running HC12-a

20 psi at 2000 rpm low pressure side
150 psi at 2000 rpm high side
condenser inlet temp 122 degrees
condenser outlet temp 102.2 degrees
outlet of expansion valve is 64.4 degrees

This is just running it in the driveway, usually gets colder on the road especially on the highway and runs down to about 48 degrees. This is in Florida so normally hot 90 degrees or so.

Jschlachta · 06-03-2012, 09:52 AM

Are there any signs that the compressor is not pumping as it should?

wannadiesel · 06-03-2012, 02:09 PM

from the pressures you posted, the compressor is fine.

Sent from my Paranoid Android HD2 using Tapatalk 2.

mtdoragary · 06-03-2012, 03:09 PM

Concentrate on insulation. The stock AC pumps plenty of cold air, but the cab absorbs even more heat!

Jschlachta · 06-03-2012, 05:51 PM

Thanks going to replace the heater core this week and clean or replace the evaporator core. Been looking over all the other ad components to see if I need to replace anything while the ac is apart. Also going to replace the radiator, water pump, and hoses.

06-03-2012, 02:09 PM	#3
wannadiesel Adminstrator-ess Join Date: Mar 2003 Location: New Holland, PA Posts: 22,593 My Photo Gallery My Classified Ads	from the pressures you posted, the compressor is fine. Sent from my Paranoid Android HD2 using Tapatalk 2. __________________ Faith '93 D350 - DPS 6x16's, HTT Stage IV/14wg, PowerStroke IC, Snow water/meth, Walbro 392, Con-FE, pump tampering by owner. 390 HP/800 TQ on #2 only, 413 HP/852 TQ w/ water/meth - needs more air! Dead KDP's = 72 wannadiesel@dieseltruckresource.com

06-03-2012, 03:09 PM	#4
mtdoragary Registered User Join Date: Feb 2010 Posts: 320 My Photo Gallery My Classified Ads	Concentrate on insulation. The stock AC pumps plenty of cold air, but the cab absorbs even more heat! __________________ Blessed with: -96 ext cab 4WD Cummins auto 2500 -Audi A3 TDI -80's Yanmar 4WD diesel tractor -Kubota diesel mower -diesel toothbrush............naaaah 03 quad cab dually Cummins 4WD - SOLD 89 dually Cummins 2WD - SOLD 95 dually Cummins 2WD - SOLD 93 D350 ext cab Cummins 2WD, - SOLD Cloverdale, AL Eustis, FL

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06-03-2012, 09:52 AM	#2
Jschlachta Registered User Join Date: Dec 2005 Location: gainesville, florida Posts: 232 My Photo Gallery My Classified Ads	Are there any signs that the compressor is not pumping as it should?

06-03-2012, 05:51 PM	#5
Jschlachta Registered User Join Date: Dec 2005 Location: gainesville, florida Posts: 232 My Photo Gallery My Classified Ads	Thanks going to replace the heater core this week and clean or replace the evaporator core. Been looking over all the other ad components to see if I need to replace anything while the ac is apart. Also going to replace the radiator, water pump, and hoses.