A/C only works on one side???
 

I have a 2004 Dodge 2500 Diesel, 5.9, 4x4, 6 speed manual with 114k miles on it.
When I turn on the A/C it only blows cold air out on the driver's side? The passenger side just blows warm air. - I suspect this is not a problem with my A/C system itself but with the vents / duct work?
Anyone have this happen to them or see it - how do I fix this?

I have an o6 and noticed the exact same problem. drivers side is ice cold but pass side blows room temp air. Does any one know if this is normal.

I'm currently working through the same problem right now myself. I found a guy Chris at www.heatertreater.net who makes metal replacement doors for the Dodge a/c system and has a video showing how to do the repairs. Your problem sounds like the "blend" door not the "recerc" door. The website does a really good job of describing the problem and the solutions.

So it sounds like I need to go have my A/C system checked first for proper pressure levels or "tuned" as a precaution before moving on to trouble shoot the blend door as the root problem.
Great explanation by the heater treater guys on how Dodge is different in the way their A/C circulates right to left verses up & down like other manufacturers - if the A/C system isn't dead on you will lose cooling ability on the passenger side. It also helped answer why I have heat on both sides but not A/C because of the HVAC design & door placement. Seems Dodge runs the same box in both dual & single climate designs - mine happens to be a single climate.
I tore my glove box out a few nights ago and noticed certain actuators moving but can't remember which doors they go to - just wasnt as educated on all the components as now. I have a hunch its the A/C system not being balanced instead of a door not working.
I'll get my A/C checked and let you guys know the outcome.

Ryan

did you ever find the problem out im having the same problem

Still waiting on getting my vehicle in to get the A/C serviced first. Just havent had the time...was 107 here today with 116 heat index - I've spent many a deployments in the hot dry desert but this 100% humidity that comes with the heat out here on the east coast is bull$$$hit.
Maybe by early next week I'll have some more input.

I have same issue with my 05. you need to recharge your system. you have a leak somewhere.

even if it is blowing really cold out the drivers side but not cold out the passenger it needs to be recharged???

I'm guessing it's one of the mixing doors under the dash.

my bet is a stuck actuator door.
the passenger blend door is probably stuck.
try operating through all modes (floor, defrost, panel, etc) and feel for air movement on the passenger side and feel if it moves with what your controling it to do.

I have an 03 Durango, I was told it was in the dash, for me the driver side, heater box wasn't closing to allow a/c on left side. I googled 'heater box' and seems unheard of! But it's at the shop being replaced! Cold air blew thru all other vents but mine, the heat from my vent made a/c from all other useless!

Believe it or not, your low on freon. Had the same problem

bikerick is right have seen this issue alot on the new pickups with how the air is distributed that gives the cold only on drivers side

Done deal
 

anvilpounder & bikerick were dead on correct- thanks guys, been along time since I messed with A/C.... had to knock the dust off.
Finally caught a break between dirt bike & quad builds and got my A/C equipment out (figured I'd save some cash and just do it myself). I had lost some pressure. Recharged the system to the correct specs and have A/C rollin cold on both sides again. Been about a month now still good to go, no worries.
Think it had everything to do with how Dodge A/C set up flows left to right vice top to bottom.

*Wasn't the blend doors you can check those by removing portion of the passenger side front panel and watching the actuators move the doors while a buddy rotates the selector knob through the different settings.
I have seen some guys have the plastic blend doors break though and there is a company that can make you metal replacement ones - it's mentioned somewhere on this forum.

after getting a re-charge your passanger A/C worKS again?
 

-I've read so many things about replacing doors & heater cores & expensive invasive reapirs. I considered just having my coolant flushed & recharged So when I read your post I'm hoping that I'm understanding you correctly. So if my drivers side vents blow cold but not the passanger, a recharge should remedy the issue..?

Holy thread resurrection Batman!!! Last post is from 5 years ago.

But yeah, recharge system, if it was just low it'll fix it. If it don't then you have a busted blend door...

I had a 2003 Ram, almost all of my Hvac doors and actuators where broke. I went to the dealership and bought all the stock replacements, fixed every single problem i had. I did it myself took about 6 hrs and you had to drain and pull the inside condenser to do it.

get your air bag recall done by a dealer and they can replace the cracked rubber hose that controls the ducting valves that turn off the heat on passenger side.

just got this fixed when airbag recall was performed at no cost. rubber hose controlling air to duct panels was cracked and replaced by dealer at same time at no cost.

a/c is okay its a cracked rubber hose to duct control

air bag failure is more pronounced in hot weather, check for recal, its free and may save your life.