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2002 Durango 5.9 R/T not cooling like I think it should

cmeseadoin on Fri June 21, 2013 3:37 PM User is offline

Year: 2002
Make: Dodge
Model: Durango 5.9 R/T
Engine Size: 360 V8
Refrigerant Type: R134-A
Ambient Temp: 82
Pressure Low: 30
Pressure High: 165
Country of Origin: United States

Hey all:

I have a 2002 Durango 5.9 R/T and to me, this system has never cooled like some of my other vehicles. The system does work and air does cool down, but it is just not a "COLD" system like some of my others. I have never thought that Chrysler has done as good of a job with HVAC as say GM, but is what I am looking at while at idle.

Ambient: 82
High side: about 165
Low: about 29-30

vent temps are somewhere in the 50's....mid 50's. When driving, she cools down into the mid 40's. To me, this is not really that great. When it is hot out, you need that air to be cold.

I know the high side pressure should be about ambient x (2.5) so around 200 (80 + 80 + 40) I think. I added one can of about 13oz to the system just to see if I could get a reaction out of the high side but at idle it didn't really climb too much higher, maybe 175ish. The Low stayed about the same and the air temps, not really much cooler. To me, by all indications the system is working as designed but I just don't think that the air temps are cool enough. If she sits out in the sun too today and gets hot by being parked and I get in and crank the air, the air doesnt chill as quickly as other vehicles I have. I am just wondering if there is something else going on? Any thoughts? Thanks!


Dougflas on Sat June 22, 2013 12:52 AM User is offline

what is the low side at 1500rpm?

cmeseadoin on Mon June 24, 2013 11:41 PM User is offline

I have not measured but I accelerated the engine speed while working on it. I had about 30 on the low side while at idle....and as I increased idle speed around 1500-2K I would probably have to say it went to 25ish or so.

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