2002 5.9 l durango blowing warm air with the temp **** on cold. Thanks.

 

did you turn on the a/c button?

 

when the A/C is on its cold, but when the outside temp is 15c its warm!

 

Sounds like it should be serviced at the A/C shop of your chioce... something is not right there.

 

im confused now, if the A/C is on and it gets cold thats correct, what is 15C in Fahrenheit? and what does that have to do with it? give us more information and we will try to help

 

SYSTEM CHARGE). Performance Temperature and Pressure
Ambient Air Temperature 21°C (70°F) 27°C (80°F) 32°C (90°F) 38°C (100°F) 43°C (110°F)
Maximum Allowable Air Temperature at Center Panel Outlet 9°C (48°F) 9°C (48°F) 12°C (54°F) 15°C (59°F) 18°C (65°F)
Maximum Allowable Air Temperature at Driverside 2nd Row Headliner Outlet 10° C (50° F) 10° C (50° F) 13° C (56° F) 15° C (60° F) 18° C (65° F)
Compressor Inlet Pressure at Service Port (Low Side) 138 to 207 kPa (20 to 30 psi) 138 to 207 kPa (20 to 30 psi) 207 to 276 kPa (30 to 40 psi) 207 to 276 kPa (30 to 40 psi) 241 to 310 kPa (35 to 45 psi)
Condensor Out Pressure at Service Port (High Side) 1034 to 1724 kPa (150 to 250 psi) 1379 to 2068 kPa (200 to 300 psi) 1551 to 2241 kPa (225 to 325 psi) 1724 to 2413 kPa (250 to 350 psi) 2068 to 2758 kPa (300 to 400 psi)

How warm is the air coming out of the vents? And what are you using to check the air temp.

 

[QUOTE=shrpshtr325;2806877]im confused now, if the A/C is on and it gets cold thats correct, what is 15C in Fahrenheit? and what does that have to do with it? give us more information and we will try to help[

When its cold outside the car is blowing warm air inside! and i have to put the a/c on
to get comfortable.GET IT.

 

NUMBER: 24-013-01
GROUP: Heating & A/C
DATE: September 28, 2001
SUBJECT:
Warm air blows from panel outlets with A/C on at idle.
OVERVIEW:
This bulletin involves installing an electric cooling fan kit.
MODELS:
1998 - 1999 (DN) Durango
NOTE: THIS BULLETIN APPLIES TO VEHICLES NOT EQUIPPED
WITH DAYTIME RUNNING LAMPS.
SYMPTOM/CONDITION:
Some 1998 - 1999 (DN) Durangos may blow warm air out the instrument panel outlets
while the A/C is ON in conditions of ambient temperatures exceeding 30 C. (86 F.)
and the vehicle not in motion. In conditions of "stop-and-go" traffic or while idling in
high ambient temperatures, the A/C high side pressures may exceed the high-pressure
switch shut off of 450 - 490 psi. causing the A/C compressor to disengage. The
compressor will re-engage once the high side pressure drops below 270 - 330 psi.
The root cause of the problem may be related to inadequate airflow through the A/C
condenser in high ambient temperatures while the vehicle is not in motion.
DIAGNOSIS:
NOTE: THIS PROCEDURE WILL NOT CORRECT A CONDITION WHERE
THE A/C COMPRESSOR DISENGAGES DUE TO EXCESSIVE HIGH SIDE
PRESSURE WHILE THE VEHICLE IS IN MOTION. NOR WILL THIS PROCEDURE
CORRECT ANY A/C PERFORMANCE COMPLAINT OTHER THAN THE LOSS
OF A/C IN "STOP-AND-GO" TRAFFIC OR IDLE CONDITIONS WHILE IN
HIGH AMBIENT TEMPERATURES AND HUMIDITY.

I don't know if this will apply for the problem you are having, let know if it does. Also have had the heating system checked for any stored codes?

 

An easy way to do the math that isn't quite the correct answer, but will get you really close is remember that 0C is freezing of water, and in F it is 32F right? All you have to do is look at the difference between the 0 and the 32, which equals 32.

Now add the 32 to the C degree. In this case it is 15, so 15 + 32 = 47 degree's F. Now like I said it isn't entirely correct but the answer if VERY close and easy to do in your head.

 

if you are blowing warm air through the vents when it is cold outside (with the A/C off) you have a blend door issue