Does anyone know of any common problems with the A/C system on the 2001 2500 with the CTD? It won't stay cold, and cant find any leaks on it with tester? Any suggestions might help. Thanks!

 

Does the compressor run at all?

 

What kind of tester are you using?

 

no common problems that I am aware of, the pressure switches would be one place to start, assuming it's holding freon correctly & at the right pressure.

 

There is one common problem, the evap core.That's why I asked what it was tested with.

 

+1 for Zman, I'll tell you for sure if you are losing refridgerant and can not find a leak its your evap. I put dye in mine and couldnt find anything and was certain enough that it was my evap that I just went ahead and removed it. Sure enough I had a fan box full of green dye! If it is your evap core it will most likely leak down within a couple of weeks of charging it. Even without dye leaks on your system are easily seen by the oily residue around the leaks. Check your condenser carefully as well. A rock or road debris can cause a leak, again its easy to spot. You will see a dark oily spot around the leak. I can tell you with a great degree of confidence that if you dont see a leak its your core. I posted a DIY with pics under my name titled evaporator replacement. Its certainly doable even for a mechanic with little experience. GOOD LUCK!

 

+1. I had that issue also. pull the blower motor cover, and see... i had a local shop do it, it was a hefty $700. If I didn't have a new born recently I would have had time to attempt the replacement.