P1126 and P1133

[jrkauffman28]

Just got back from AutoZone. Once again P1126 and P1133. To clarify, 2.7L 2000 Box with 65K miles. Orignal owner. No other CEL's ever except to replace a defective fuel cap 6 months after I drove it off the dealer's lot.

Is it still the MAF? Any "cleaning" or "tightening" to resolve this or only replacement?

If replacement, any recommendations on where to pick one up and the proceedures involved?

Thanks.