View Full Version : Maf sensor question...

02-14-2013, 10:00 AM
Dumb question for sure but I'm just curious. If you have a dirty/faulty maf sensor, what are some signs? Is it a lock a cel would come on?

02-14-2013, 10:24 AM
You may see a p0171, bank 1 lean. Basically the Maf is reporting the wrong air amount. The o2 sensors are reporting a lean. The car increases the fuel trim). Gas mileage sucks. If this goes on for some time, you will kill your catalytic converters. a cel will light up.

02-14-2013, 12:55 PM
Car has just been really sluggish sometimes. Sometimes it runs and pulls strong and sometimes it's sluggish and I hear a flutter from my diverter valve. Boost gauge reads normal at 15 psi. Haven't been able to figure this one out

02-15-2013, 10:45 PM
If you have a vag com why don't you do some pulls and log your g/s... Your g/s divided by .82 will give you a rough calculation of your bhp. Then compare. Lower than normal #'s indicate your MAF might be on its way out. My FT set up maxes around 242g/s which comes out to just under 300bhp...sounds about right.