No CEL as of today. P0420 fixed itself by cleaning MAF and using 93 octane gas. Thank goodness I don't have to replace the catalytic converter. P0130 has not come back after replacing before and after cat O2 sensors. It runs really good. Throttle response was better with new O2 sensors. I am averaging now 31 mpg city. It used to be 29 mpg with old sensors. __________________ 1996 Ti 280k miles and still going.... 1993 964 - holding on to this one 2001 Burban, 240k miles 2018 Suburban Z71 |