I have already checked the fuel presure it was alittle low so i changed the fuel filter and that corrected that. I have 268,000 and im the orignal owner. I have always maintened this truck very well and its all highway miles.
I also thought the p0101 was a maf or a map.
since i replaced the maf could it be the map.
I dont mind doing the cats but at 1600.00 i would rather try the cheeper options first.