Hello all MB experts- I had the fuel trim malfunction code on my 95 C280 and I purchased a new MAF (from ******** in AZ) and installed it and cleared the codes by taking the battery cable off. The light stayed off for one whole day and came on the second day. I had it checked at AZ and I got the dreaded fuel trim malfunction- bank 1 message. The car had a lot more zip after I put the new MAF sensor on. Is it possible for the new MAF to go bad in one day ? I have read a lot about gas cap leaks- could this be the problem? I have no other codes showing. Should I reset it again by taking the cable off or should I have AZ reset it with their reader?
Thanks for your insight.

Larry