help with a/c vents

[jeff95]

The ac on my 2004. 5 blows cold on the drivers side but, warm on the passenger side. Is there a diagram of the duct system and how difficult is it to access? Any other ideas?

Thanks,

Jeff

 

[Belgrath04]

View attachment 72862

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 knob 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. "

 

[RVTRKN]

The ac on my 2004. 5 blows cold on the drivers side but, warm on the passenger side. Is there a diagram of the duct system and how difficult is it to access? Any other ideas?

Thanks,

Jeff

Low on refrigerant or broken vent door issue.

 

[DBentley]

My 06 had the same symptom last week and a recharge fixed it

 

[FFL8N]

sounds like a blend door issue... . I am having the same problem with the same year truck. If you are out of warranty, there is a fix that I am looking at without tearing the whole dash apart and having to evac and recharge the AC system... . you would lose dual climate control though... not a big deal for me.



http://www.heatertreater.net/Buy it Now.htm#dodge

 

[rbeyer]

My '05 has this same characteristic when the refrigerant is a little low. That is a lot easier place to start than the blend doors.

 

[RHestand]

Are you guys buying a kit and recharging it yourselves, or do you have to take it to an AC repair shop a recharge?

I'm back in CA now, so I'm not sure what CARB has to say this now.

TIA for any info. on this.

Ray

 

[AABEN]

Blend door broken this is what happens to most of them!!

 

[DBentley]

I am blessed with a H. V. A. C friend that has 134 and gauges for my recharges for free.
I don't think the do it yourself recharge kits is any good if you don't have the 2 gauges.

 

[rbeyer]

Unfortunately, I do not do much of anything myself. Fortunately, Left Coast Diesel in Concord is extremely convenient. They are a great group. They know Dodge diesels and are reasonable and totally reliable.

 

[VanOverbeke]

I bought a recharge kit from the auto parts store and did it myself. I got the one that came with a small gauge and it fixed the exact same problem/symptoms that you describe.

 

[Kday]

? Is the low side connection right in front of the airbox, and if so the gauge and fitting I just got is too small.

 

[Belgrath04]

Be carefull with the do it yourself kits. Most of the bottles with the little gauge on them contain leak sealant. This can stop things up, make sure you get just the refridgerant. I had to ask for it, as the local parts place here has it in the back. They have the leak stop stuff out on the floor.

 

[JAshcraft]

I had the same problem earlier in the week and with the help here all I needed was a little over 2 lbs. freon and now it cools great. hope the helps. James

 

[ELABAY]

As far as i know the low side isnt in front of the air box. I think it is on the condenser. I am not a ac guy so i think it is called the condenser.

 

[FFL8N]

I ended putting a can of freon in my truck and it took care of the passenger side getting warm... .

 

[jakprince]

Mine does the same thing but when i hook up the gage to the low side it reads 45 lbs by my gage it says thats charged. Is that where its supposed to be or not.

 

[MickeyMiller]

FFL8N,



Thanks for the link to the video... my vent door broke yesterday while I was traveling from San Diego to the Bay Area on I5... could only get minimal AC and the overhead temp gage was showing 110* at Buttonwillow! I have the dash apart right now doing the diagnostics.



Mickey

 

[MickeyMiller]

HELP!

I went through the Central Valley on Saturday with only a trickle of cool air out of the AC vents. I 'assumed' broken vent door(s) and took the dash apart yesterday. All doors are working and I now have fully functional AC now... What's going on? I'm open for suggestions... please!



BTW, the video on the link provided by FFL8N is great for anyone who does have an vent door problem.



TIA

 

[mort]

My truck did the same thing. I tore the dash out and expected to find a broken door, but no such thing. I ve got it back together now and am going to take it in to check the freon level. Hopefuly that is the easy fix I overlooked.