Hey guys i have a 2018 dodge journey 2.4l a/c not cooling. Has rear a/c. Ac compressor cycles for about a minute then kicks off due to high side pressure reaching about 425psi. Goes down to About 350psi and clutch will kick back in and build up to 425psi. Low side pressure is 60-100 during this. Condenser fan is not kicking on at all but im not sure if or when it should car engine temp stays at about 200f iv read it kicks on fan at 240f. I have a new condenser and new accumulator and new expansion Valve (front) on it didn't do anything a/c is not overcharged will start doing this with only a pound of refrigerant in it during charging. Changed parts due to wreck dmg not blown compressor or anything. Any ideas would be great. And if anyone know if a/c controls engine fan at all

 

I have a 2009 so many things may be different, but every vehicle I have owned would turn on the radiator fan on low speed as soon as you turned on the A/C. There are (were in 2009) a fan speed relay on the fan shroud, sounds like you had a front end collision. Not sure if the rear vents are blowing cold but not the front A/C, if so there's not much plumbing differences, but here is a page from the service manual in case it helps you think of something you haven't tried already.


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Thanks for reply i had 14v going to fan and not operating when i plugged it in. Pulled fan out and ohm between connectors post had 1.1 ohm?? Then thought to check ground side on pig tail no ground but i have 14.4v on both sides of pigtail going to fan. Is this due to it being 2 speed? And if so then does the fan not need to have continuity? Meaning mine is shorted? Thanks in advance

 

Depending on the accuracy of your ohm meter, 1.1 ohm sounds about right for a motor. For the pigtail connections take a look at https://connectorrepairkit.mopar.com/ and search for fan.

You might be able to use an app like alfaOBD to turn on the fan and see if it works. I would just wire the fan direct to the battery and see what happens, if the fan starts to run on high speed and cuts your finger off the motor is good. If the fan doesn't turn and starts the wires smoking or a fire - the motor is bad. While the fan is running you could verify if the A/C is working better.

You could check the fan speed relay resistor ohms, it's located on the fan shroud a little lower than the high speed relay. I don't have a wiring diagram, but I would expect a relay to turn on in the TIPM fuse box under the hood, that would send electric through the fan speed resistor for low speed. The high speed relay probably just shorts out the resistor.

As for your original question, this may be a more accurate answer for when the fan runs:

 

So a/c is working great after i replaced the fan resistor! It ohm way high. (Compared to new one to before installed it) Well for one 25 mile trip i had no issues whatsoever but getting in car after shopping engine temp started to rise and a/c was out again checked under hood no engine fan... Lol gonna check for some power again maybe my fan is intermittent working?? Im sure the fan has two powers to it for low and high speed and something works as a ground in the fan thats why i had 14v on both wires. Kinda leaning towards a fan i did pull the fan and hooked power to it ran smooth with 1 pin hot and 1 pin ground. if anyone knows for sure id appreciate it thanks in advance. Also going down road everything stayed cool until i hit a stop light then temps would rise and a/c cut out again. I appreciate the info on the fan operation temps!! Really helps to know when stuff should be working instead of guessing

 

So just checked relays they seem good didn't hook pwr to them but ohm through all points. Had 14v to fan on both pins still and fan no turny. Checked resistor its blown..... And had 14v to it like a idiot i tried to jump it out with a wire while car was running made my fuse Pop 😂... But ill get a replacement resistor and fuse tomorrow. Idk what caused new resistor to go so soon though??

 

Looks like i have a smashed wire somewhere cause im not supposed to have 14v on both pins at radiator fan.