o2

  1. D-ran903

    Check engine light after O2 sensor replacement and spark plugs

    Alright. So before i take my ye ole jeep to the shop, I’d figure i come here first as usual. I replaced 2 of my o2 sensors a few months ago when i had a check engine light and resolved that problem (bank 2 sensor 1 and bank 1 sensor 1). Last week it was time i did the spark plugs and went ahead...
  2. ItWasn'tAPhaseMom

    Intermittent sputtering with power loss and CEL

    2001 TJ, 4.0, 5-spd, lifted on 33s. Back story: I’m 100% new to jeeps, just bought the thing 4 days ago. Test drive was fine, drive home was fine (60 miles), felt a little sluggish on hills but figured it just doesn’t have the power that my Duramax does. Later, I'm driving straight and flat for...
  3. carrotman

    How close can you put a single catalytic converter to the header?

    On earlier TJs with the single catalytic converter, is there any problem with putting the cat closer upstream from the stock location? Stock it is way back there between the transfer case and transmission. I've been running mine about 12-18" further forward for clearance without any issues, but...
  4. Mitch8801

    2002 Jeep Wrangler TJ with glowing red cats

    Hey Guys, So recently I was on my way home and at a stoplight had a misfire in cylinder 2, and my exhaust sounded funny and fluttery, I was like 8 minutes away so I decided to drive it home and coast down hill. Long story short, I replaced the spark plugs, still had issues. I checked my coil...