Puma high fuel consumption stalling

I had a similar problem with my Puma. Higher fuel consumption and the check engine light were the first signs. Have you checked your air filter lately? A dirty air filter can sometimes mess with the LMM readings, causing performance decline.

Thanks for the tip! I did check the air filter, and it seemed alright. I'm leaning towards the mass air flow sensor being faulty. Did your Puma also exhibit engine stalling? If so, what was the final diagnosis?

Yeah, the engine stalling was definitely part of it. Turned out to be a defective mass air flow sensor indeed. If you're seeing smoke, it's probably best to get it checked at a workshop. They can properly diagnose it and replace the sensor.

Appreciate the confirmation and advice! I took it to the workshop, and you were spot on - defective mass air flow sensor. Replacement cost me 365€. Runs like new now, thanks again!