Car turning off when stopping

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! If your Chrysler 300 stalls out at stoplights and idles rough, it’s likely not a case of the car suddenly deciding it hates red lights. This could point to a problem with the idle air control (IAC) valve or throttle body. These parts regulate air flow at idle, and when they’re dirty or failing, the engine may struggle to keep running at low RPMs. Another suspect is a vacuum leak, which can throw off the air-fuel mix. You might hear a hissing sound under the hood, or the engine light might spill the beans with a related trouble code. Lastly, a failing torque converter in the transmission could cause the engine to stall when stopping, though that's less common. Start by cleaning the throttle body and inspecting for vacuum leaks. If that doesn’t fix it, it’s time to dig deeper. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.