Recent content by progatschnigg

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...

I didnt measure it. But the amp draw is very low. Its just a small sensor altering its millivolt signal.

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.

Heres one video testing the truck. Im reuploading the other one again on my channel iv recently created.

Iv 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...

So i ended up adding 1 more 4.65Kohm resister the other day, cause the AC was too cold! Lol. I measured the resisters i added, its at 29,000 ohm, or 29Kohm. The temp sesor on my workbench was at approx 3200ohms. With the parallel resisters added it measured around 2900ohms. Getting 43*F vent temps

Ok thank you! Well i may just order a new sensor or just run my modified one.

Thanks for the info. i do have that chart as well. Im trying to find the specs for testing the evorator sensor resistance values?

UPDATE, So iv basically gave up with the dealership. Today I torn the glove box out and gained access to the evaporator sensor. With the sensor in an ice bath it wwas reading about 8.5Kohms. Sitting in ambient air, 20*Cish it was around 3.5Kohm I ran a bunch of tests with the sensor removed...

You need to get down to 32 or lower to freeze it up.

Yu0 same issue here..... i have a 08 tundra and a 2011 Sequoia. They both blow so cold you uave to turn the fan down. This Ram is garbage.... for a 100K truck Limited. This is complete ********. All it needs to do is run the compressor longer and cycle at a colder temp. Makes me think they...

I been thinking of insulating the evao sensor, to fool it into running colder. I like your idea of a resister. Big question is how hard is it to locate the sensor or wiring? I havent looked at the HVAC box much yet. But yes the compressor cycles off to early. Nothing to do with R134a ect.

Im thinking if we can develope a new software or add-on that alters the compressor cycling this issue will be solved..... anyone figure out how to reprogram the AC cchip yet??

So iv been following this issue for poor AC for 2 summers now. I have a 2019 3500 Limited. My AC is pretty pathetic. I have been to the deler 4 times now. Last week they did the so called TSB for housing and eveap replacement. The AC is only blowing 50 degrees...... I am experienced with AC as a...