BenzWorld Junior Member
Date registered: Nov 2010
Vehicle: 2002 C320 Wagon
Location: Portland, Oregon
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Clean MAF, new o2 sensor: still weak idle
Driving an '02 C320 Wagon. I was getting codes p0131 and p0171. I cleaned the MAF and replaced sensor 1 on bank 1. I then cleared the codes, rescanned and didn't get any new codes.
Am I really in the clear though? My idle still feels weak when I'm at a stop and do I need a few days worth of mixed driving for the codes to come back?
I've read that p0171 and p0131 together can be misleading. There could possibly be a vacuum leak? Or what's the best way to know if my MAF is completely faulty? Any ideas would be appreciated.
Thanks in advance.