Hello all, I am new here and could use some help. My 02 Blazer 2wd 4.3 started acting up last month. It would act like it was running out of fuel going down the road. It got worse and misfires and no power. I bought a code scanner. P0101, P0300 codes. I changed the fuel filter, same. I checked the cap and rotor to find the rotor loose and coming apart. The dist shaft was badly worn and wiped out the pickup, cap and rotor. I replaced the dist, cap, rotor, wires and MAF. It now runs smooth but no power and the P0101 code came back. It wont get up to speed and I need to fix my ride. Help please........

 

Have you studied and follwed the instructions in this post?
P0101 Explained

 

I had replaced the MAF and no change. I got desperate and pulled the exhaust. I found the pre CAT had come apart and plugged the main CAT. I dumped out all the pieces and powder and tried to run the truck. It would at least go 55. No faster and no power. I just got back from a local exhaust shop. They installed a new CATCO hi flow cat and new flowmaster with 2.5" pipe all the way back. It solved the prob and runs better than ever. No cades and all seems fine. Thank God.......