Cold start stalling issue

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simon_shelton1

Junior Member
Joined
Dec 10, 2025
Posts
1
Reaction score
0
Location
Homer, ak
Ram Year
2016
Engine
Hemi 5.7l
Hey all, I've searched high and low for a thread regarding my issue before posting one, but I havent had any luck.

Long story short, I've had a pedal commander in my truck (2016 ram rebel 5.7l) for the last 2 years. Coming in the this winter, when temperatures started dipping below freezing, and yes, specifically 32 degrees or less, the colder the worse, when I start my truck in the morning, after sitting all night, it turns over strong, starts easily, idles high as it should, but as soon as the rpms start to lower, it stumbles up and down and stalls, and it will start back up no issue, and then die again. Over and over, eventually it will let me feather the throttle and after enough tries it will stay running and do fine the rest of the day. It only does it when temps are below freezing, and after sitting for 8-10 plus hours. And after all of these horrible cold starts, not a single code, pending or no.

Now, one day i thought to remove the pedal commander and re install the factory throttle pdeal harness. The next morning it started great, and the following day it stalled again. the one thing that I've found that makes a real difference, is when im parking it for the day, if I do a throttle calibration, IYKYK. If I do the calibration when I park it for the day, it starts fine the following morning, regardless of temps or time parked. But I have to do this daily in order for the truck to start in the morning. This points me toward the accelerator pedal, or the throttle body position sensor, maybe a TIPM.

Im hoping someone here might have some insight to this, and could help point me toward the correct part to test/replace
 
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