On February 15, I was driving 60 mph when the vehicle lost power and stopped running. The shop owner replaced the rear cat converter, said it was plugged. Now, the vehicle runs rough. He said he is "stumped." Doesn't know how to proceed. I need help! TY

What kind of scanner is this 'shop owner' using to read live data? What is STFT and LTFT? What reading from MAP , and is it steady at idle? Rear cat 'plugged' , after that was changed , were the plugs also changed? Fuel pressure TESTED with GAUGE?

check for trouble codes, check for correct fuel pressure. please call if need more help