• You're one step from joining Dodge Durango Forum – Performance Tuning, Towing Discussions & Interior Upgrades.
    Create a free account to post, follow threads, and never miss an update.  Sign up free →

2005 Durango AC not cold enough

M

Moen

Member
Joined
Apr 30, 2025
Messages
5
I have a 2005 Dodge Durango Limited with a Hemi and only 55k miles. The AC used to blow freezing cold, even to the point where it would ice up on long trips, I fixed that with a service bulletin mod, adding a resistor to help the compressor cycle properly, and now on hot days, the AC only blows cool air from both the front and rear vents. All vents and airflow settings work fine. I added a can of freon, but it didn't improve much, the compressor runs constantly and doesn't cycle off like it used to, any idea why it's not getting as cold as before?
 
Moen said:
I have a 2005 Dodge Durango Limited with a Hemi and only 55k miles. The AC used to blow freezing cold, even to the point where it would ice up on long trips, I fixed that with a service bulletin mod, adding a resistor to help the compressor cycle properly, and now on hot days, the AC only blows cool air from both the front and rear vents. All vents and airflow settings work fine. I added a can of freon, but it didn't improve much, the compressor runs constantly and doesn't cycle off like it used to, any idea why it's not getting as cold as before?
Click to expand...
check your condenser fan up front, is it running strong when the AC is on? If that fan isn't pulling enough air through the condenser, your high-side pressure will go through the roof, making it inefficient.
Also, adding Freon without knowing the exact pressures can complicate things. You might need a shop to properly evacuate, vacuum test for leaks, and then recharge to exact specs by weight. That's often the quickest way to diagnose the real issue here
 
YeeHawBro said:
check your condenser fan up front, is it running strong when the AC is on? If that fan isn't pulling enough air through the condenser, your high-side pressure will go through the roof, making it inefficient.
Also, adding Freon without knowing the exact pressures can complicate things. You might need a shop to properly evacuate, vacuum test for leaks, and then recharge to exact specs by weight. That's often the quickest way to diagnose the real issue here
Click to expand...
I'll check the condenser fan first to see if it's running strong, if it seems weak, could that alone cause the system to stay stuck in high pressure and not cool properly?
 
Yeah, a weak or non-functioning condenser fan can absolutely mess with cooling. If it's not pulling air like it should, the system can't dump heat fast enough, and that kills performance.
 
Moen said:
I have a 2005 Dodge Durango Limited with a Hemi and only 55k miles. The AC used to blow freezing cold, even to the point where it would ice up on long trips, I fixed that with a service bulletin mod, adding a resistor to help the compressor cycle properly, and now on hot days, the AC only blows cool air from both the front and rear vents. All vents and airflow settings work fine. I added a can of freon, but it didn't improve much, the compressor runs constantly and doesn't cycle off like it used to, any idea why it's not getting as cold as before?
Click to expand...
I have a couple of guesses coming to mind. I'm thinking if your compressor might be overcharged? The resistor mod you mentioned could also be a factor if it's somehow keeping the compressor engaged too long. Another culprit could be a failing blend door actuator or an issue with the expansion valve. It might be worth having a shop evacuate and properly recharge the system, then check the pressures to see if they're within spec.
 

Latest posts

Back
Top