Can you post the link to the video?
@progatschniggIv been trying to find the evap sensor specs for a while now. When i uad it on my workbench it was around 20-23 degrees celcius. My fluke meter mesured 3200ohm approx. I did a ice bath test and it was approx 8000ohm. My truck is a 19. I uploaded a youtube video showing some resistance values. Title is, 2019 Ram A/C sensor hack for colder A/C.
I will probably purchase a new sensor, maybe mines out of spec. But for now its working great. Thx.
100% agree with this sentiment...@progatschnigg
I also have the 19 Limited and even with the TSB done the AC leaves much to be desired.
Your "custom sensor" sounds like an easy fix, do you need a scanner or any reprogramming to make it work?
No scanner or programming. Its looking like mine, and now a few others are much better with adding resisters in parallel with the evap temp sensor.@progatschnigg
I also have the 19 Limited and even with the TSB done the AC leaves much to be desired.
Your "custom sensor" sounds like an easy fix, do you need a scanner or any reprogramming to make it work?
No scanner or programming. Its looking like mine, and now a few others are much better with adding resisters in parallel with the evap temp sensor.
I didnt measure it. But the amp draw is very low. Its just a small sensor altering its millivolt signal.Any idea how many watts that circuit is using?
I think I'm not going to bother with a TSB, I tried last fall and as I expected they said "it's fine, no problems".
Would rather do this mod by myself instead of letting some grease monkey wrench on my truck.
Hello,I think I'm not going to bother with a TSB, I tried last fall and as I expected they said "it's fine, no problems".
Would rather do this mod by myself instead of letting some grease monkey wrench on my truck.
that wold be nice, my dealer flat out refused to do the SIB for the A/C. I ended up adding a valve to the heater core to stop coolant flow in the summer.Hello,
If at any point you decide to go the dealership route to have this addressed and would like an extra layer of support, please feel free to reach out via private message. We would love the opportunity to assist.
Lex
Ram Cares
Do all HD Ram trucks have this sensor or just the trucks that have automatic temperature controls? I have a Bighorn with the manual ac system.UPDATE;
another member has installed and tested my resister mod. Railfan413
His AC is colder than ever on a 21.So thats makes 2 of us now. All it takes is a resister of 28.5, or 29K ohms. With a couple hours of removing the glove box and finding which resister works to get the vent temp down to 40-43F.
Hi there,that wold be nice, my dealer flat out refused to do the SIB for the A/C. I ended up adding a valve to the heater core to stop coolant flow in the summer.
So if I was going to order a resistor to do this what size should I order? Would a 22k be ok? I don’t see any 24.4k. I’d rather not try to get the right assortment of resistors. I don’t know a lot about resistor math lol.I didnt measure it. But the amp draw is very low. Its just a small sensor altering its millivolt signal.