Quote:
Originally Posted by Gamb1t
Didn't notice any DIY on MAF cleaning for our X1s.
Complexity: Easy. As in easier than making Ramen noodles.
Tools: Torx head screw driver, CRC cleaner, plier
Frequency: With my other cars I perform this maintenance annually. YMMV.
Why bother? Clean MAF = Accurate air flow readouts = Accurate A/F calcs = Improved performance and mileage = Happy Bimmer = Happier You.
Disclaimer: If you screw up, it's your fault. 
Steps: - Pop over the hood
- Unclip the MAF sensor wire harness. I used a plier to help. Grippy fingers help... mine are a too callous or I have weak finger muscles.
- Unscrew the torx screw. Please becareful to not drop them!
- Tenderly lift the Bosch MAF sensor out
- Gently tap it sideways to fling off any loose particles.
- Spray some CRC cleaner on the silver plates and let dry.
- Reverse order for installation.
- Optional: You can apply some rubber lube on the rubber seal if you like.
- Celebrate with a bowl of Miso Ramen.
You can visit F30 or F-whatever forums for photos. |
Removing wire harness turned out to be challenging for me as I've never done this before
is there any clip that needs to be depresses while taking it off as I just tried with my fingers and it wouldn't come off. I see there's something going on at the back of it. Tried depressing there and pulled but without success. Didn't wanna break anything and thought using pliers will be even more risky esp for the plastic housing of the harness.. Any advice? BTW mine is diesel if that makes any difference. Thanks