jrn

Noticed the a/c is only blowing cold on the driver side vents. Blows thru the passenger side, but noticeably warmer. Could it be the blend door? Thanks

Belgrath04

Is yours one with the independent zone controll?
Odd that yours is blowing cold on the driver side ... it seems to typically blow colder on the pass side.

From the Dodge Service Manual:
"The heating-A/C system pulls outside (ambient) air through the fresh air intake (4) located at the cowl panel at the base of the windshield and into the air inlet housing above the heating, ventilation and air conditioning (HVAC) housing and passes through the A/C evaporator (7). Air flow is then directed either through or around the heater core (2). This is done by adjusting the position of the blend-air door(s) (3) with the temperature control(s) located on the A/C-heater control in the instrument panel. Air flow is then directed out the floor outlet (8), instrument panel outlet (10) or the defroster outlet (1) in various combinations by adjusting the position of the mode-air doors (9 and 11) using the mode control located on the A/C-heater control. The temperature and mode control uses electrical actuators to operate the air doors.

The velocity of the air flow out of the outlets can be adjusted with the blower speed control located on the A/C-heater control.

The fresh air intake can be shut off by pressing the Recirculation button on the A/C-heater control. This will operate the electrically actuated recirculation-air door (5), which closes off the fresh air intake. With the fresh air intake closed, the conditioned air within the vehicle is pulled back into the HVAC housing through the recirculation air intake (6) located within the passenger compartment.

On models equipped with A/C, the A/C compressor can be engaged by pressing the A/C (snowflake) button on the A/C-heater control. It will automatically engage when the mode control is set in any Mix to Defrost position. This will remove heat and humidity from the air before it is directed through or around the heater core. The mode control on the A/C-heater control is used to direct the conditioned air to the selected system outlets.

The defroster outlet receives airflow from the HVAC housing through the molded plastic defroster duct, which connects to the HVAC housing defroster outlet. The airflow from the defroster outlets is directed by fixed vanes in the defroster outlet grilles and cannot be adjusted. The defroster outlet grilles are integral to the instrument panel top cover.

The side window demister outlets receive airflow from the HVAC housing through the molded plastic defroster duct and two molded plastic demister ducts. The airflow from the side window demister outlets is directed by fixed vanes in the demister outlet grilles and cannot be adjusted. The side window demister outlet grilles are integral to the instrument panel. The demisters direct air from the HVAC housing through the outlets located on the top corners of the instrument panel. The demisters operate when the mode control **** is positioned in the floor-defrost and defrost-only settings. Some air may be noticeable from the demister outlets when the mode control is in the bi-level to floor positions.

The panel outlets receive airflow from the HVAC housing through a molded plastic main panel duct, center panel duct and two end panel ducts. The two end panel ducts direct airflow to the left and right instrument panel outlets, while the center panel duct directs airflow to the two center panel outlets. Each of these outlets can be individually adjusted to direct the flow of air.

The floor outlets receive airflow from the HVAC housing through the floor distribution duct. The front floor outlets are integral to the molded plastic floor distribution duct, which is secured to the bottom of the housing. The floor outlets cannot be adjusted. "

ssandlin

First thing to check is freon charge and make sure it's full. Mine was doing the same thing and turned out it was low on freon. Topped it off and all is now well. This subject has been discussed in another thread and for several others, it was low freon as well.

Good luck.

MikeyB

Check the freon level, one of the symptoms of being slightly low.

MikeyB

Totallyrad

Mine was 20* warmer on the passenger's side and the ac line wasn't sweating. They added a little over a pound of freon and both sides were blowing at 38 degrees.

jrn

Wow! Thanks for info guys....Belgrath by independent zone control, does that mean that each passenger can tailor air to their liking? If so, mine doesnt have that...Unless I'm not aware of it....dont think so though....Thanks for the replies

jrn

Sounds like thats what mines doing....blows ice cold on d/s, noticeably warmer on p/s. And the p/s does blow with as much force as d/s

1-2-3

Another vote to check freon level. This was the issue on my buddies caravan with the same symptoms. They actually had the dual zone stuff too, but that was not the issue. $20 can and gauge at Walmart will answer your question a whole lot faster than taking the dash apart.

jrn

Thats what I'll try first......Thanks again!!

1-2-3

The ad part about this fixing it is your probably gping to find that it does, and that'll mean there's a leak. 99% of the time, it's gona be the evap core. Not imposible but a pain to change out. I did my own so if I can anybody can. I always give advice to change the heater core while your dug in there. I rechaged my own system but I have buddy thats been doing ac work for 40 years close by to lend tools and advice. Makes a big diffrence. I'm willing to lend the advice he lerned me if you need it,

billlehman

If my blend door is the problem can I improve A/C performance by isolating the flow to the heater core?

tryNto

Yes here is a link to the mod to do this....ac-performance-mod

Highway 4x4

About every year or so I have to add a can of 134 so I bought some cheepo gauges at Auto-zone,,,,,,,,,,done.