Stalling ProMaster MAF Sensor Symptoms and Fixes

I experienced identical symptoms on my 2013 ProMaster EcoDiesel. The engine stalling at idle and increased fuel consumption were clear indicators of sensor failure affecting the air intake system. Initially tried cleaning the air filter, but this only temporarily improved things. The check engine light persisted and performance decline continued, especially during acceleration. The smoke issue matched my experience exactly, it was greyish under load. The root cause turned out to be a faulty MAF sensor that was sending incorrect readings to the ECU. This caused the engine to run rich, explaining both the excessive fuel consumption and smoke. After sensor replacement, the idle stabilized immediately and fuel economy returned to normal. This is considered a moderate repair job since the MAF sensor directly impacts engine performance and fuel mapping. The part is accessible near the air intake assembly, making replacement straightforward for a qualified technician. Recommend having the diagnostic codes read first to confirm MAF sensor failure before replacing parts. Also worth inspecting the wiring harness connected to the sensor for any obvious damage or corrosion that could cause similar symptoms.

Thanks for sharing your experience with the MAF sensor issue. My Dodge had the exact same symptoms, poor fuel economy, engine stalling, and that annoying check engine light. The smoke during acceleration was what finally pushed me to get it fixed. The mechanic confirmed it was the MAF sensor messing with the air-fuel ratio. Been running great for about 6 months now with no issues. Just curious, do you remember roughly what you paid for the repair? Also, has everything stayed working properly since the fix or have you noticed any other problems?

Had the MAF sensor replaced about 8 months ago and the repair cost came to 365€ total. The investment was worth it since the sensor failure was causing major problems with fuel economy and engine performance. Since fixing the faulty MAF sensor, the ProMaster runs perfectly, no more stalling, normal fuel consumption, and zero engine warning lights. The smoke issue during acceleration completely disappeared too. The repair solved all the initial symptoms and nothing new has developed. A properly functioning MAF sensor is crucial for optimal engine performance since it ensures the correct air-fuel mixture. When it fails, it really impacts the whole driving experience. Getting it diagnosed and fixed by a qualified technician was definitely the right call rather than trying temporary fixes. Glad to hear your vehicle is also running well after the repair. These symptoms are pretty typical for MAF sensor issues and getting them resolved prevents bigger problems down the road.

After dealing with my ProMaster issues for a few weeks, I finally took it to a certified diesel mechanic. The symptoms were spot on with what you described, poor fuel economy, stalling, and that persistent check engine light. Total repair came to 420€ including diagnostics and parts. The mechanic showed me the old MAF sensor which was pretty contaminated. Once replaced, the engine performance improved immediately. No more stalling at idle and the smoke during acceleration disappeared completely. The air-fuel ratio is now properly regulated and fuel consumption returned to normal levels. Been driving it for about 3 months now without any issues. Looking back, I should have addressed it sooner instead of trying quick fixes. The peace of mind was worth the repair cost, especially considering how much extra fuel I was burning with the faulty sensor.