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sensor problems

  1. Newbie Check In!
    I'm new and I'm researching. I have a 1999 Chrysler 300M 3.5L High Output V6 24V MPI - 4-speed automatic transmission. I live in California and I need to get my car smogged in August and, of course, I want it to pass. Cars been running a bit rough at the 40-44 mph and 50-54 mph range. The...