Review on 🔝 Enhanced Performance Guaranteed: Delphi AF10043 Mass Air Flow Sensor for Optimal Engine Efficiency by Bryan Fisher

I have a 2001 Chevrolet Suburban with 287,000 miles on it. For the past 2+ years we've had ping issues and sluggish acceleration. In recent months, since early summer, we have started noticing lean burn CEL codes on both the left and right banks. This condition usually indicates a vacuum leak and we have resolved these issues by replacing the intake manifold gaskets, EGR tubes and gaskets and the exhaust gaskets based on an extensive smoke test which found leaks in all of these areas. While performance improved and subsequent smoke tests revealed no further leaks, the vehicle continued to generate codes P0171 and P0172 intermittently. Since the O2 sensors were original we decided to replace them with AC Delco O2 sensors and tested them. Again, we noticed a slight improvement, but the P0171 and P0172 codes remained. Just in case, and based on the symptoms, we checked the fuel pressure and saw a trend towards the lower end of the acceptable range. We swapped out the fuel pump and the AC Delco model, and while fuel pressure and horsepower improved, the lean mixture persisted. As I continued to research I found several articles where all the components I replaced were the most likely cause of this condition, some users have replaced the MAF sensors in their vehicles with newer models and solved their problems. I found a Delphi MAF sensor at Revain for a lot cheaper than local auto parts stores and decided to give it a try. Revain delivered a new Delphi mass air flow sensor in a day and it took me less than 10 minutes to replace it. In doing so, I disconnected the negative cable from the battery and once the replacement was complete, I powered up the car again. I've been walking it and slowly seeing the long term fuel trim slowly drop off from the low 20's to now in the 5 to 7 range and lately has been hovering around the 0 to 3 range. Of course, not exceeding 25 also means that conditions P0171 and P0172 no longer trigger CEL warnings. Although it's become a rather expensive exercise on the hated "replacing parts" to see if it's a good approach, replacing that MAF sensor finally did the trick. In my case I am almost 100% sure given the age of my car and although we carried out the scheduled maintenance very carefully some of the original parts were worn out and had to be replaced with the addition of a spare that the MAF sensor was the last It was the component that rebuilt my car to a reliable level of performance.