03 durango ac help cold air at low blower speed but not high
I have a 03 Durango SLT Plus...I have read many posts on here about the ac problems in these vehicles. I have a continuous problem that I cant get around...when the ac is turned up it only blows warm, and the ac cycles so fast. When the rear air is ran it definitely cant keep up. I can run either the rear air or front independently (only one at a time) at a low fan blowing speed an it will come out fairly cool, but on a 90 degree day it cant cool off the cabin at all. If I crank it up, it blows hot. I have wrapped the return lines in tar tape, the ac doesnt leak freon...but I do get wetness on the passenger side floorboard. Its summer and my son is 2 and he gets so hot in there. Im trying to figure out what the heck to do...should I upgrade the compressor? will a fan on the front side of the condenser make very much difference? what about the oraphis? should i check the heater core? Like I said I know that the setup is poorly designed and was originally used in the dakotas.
Have you checked to see if you have enough 134a in the system. The a/c units on our Ds use more 134a cause of the two seperate compressors. Take it into a shop and have them test to see if you have enough. Also, there should be a sticker under the hood stating how much charge is required. HTH.
my sticker has faded, but i have the low pressure at 45 - 50, i just wonder how much it could really hold before it ruins it...maybe somebody on here can tell me and i could avoid the shop fees, my dad says he wouldnt put anymore in it, and he is certified in this ac stuff...but his experience is not dealing with newer vehicles with complexities.
Have you checked to see if you have enough 134a in the system. The a/c units on our Ds use more 134a cause of the two seperate compressors. Take it into a shop and have them test to see if you have enough. Also, there should be a sticker under the hood stating how much charge is required. HTH.

i think dan meant bc of two seperate evap cores one in the back, one in the front, but he is right, these trucks do take more freon than a normal car would bc of the larger system, ill try and get the numbers off my sticker for you as a guideline








