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  1. Engine Performance
    Hi all, My '07 FJ has a cat delete and fully-aftermarket exhaust (came with car when I bought it, 2nd owner). Everything worked great for over a year until I went off-roading and really banged up the underbody, and damaged the O2 sim (URD Rear O2 Simulator, 1GR-FE 4.0L V6 Dual Channel). Started...
  2. Engine Performance
    Hello all, I have been a long time lurker and finally decided to create an account and make a post to ask for help. I have searched everywhere, every thread related to P0171 & P0174 codes but I could not find anything that was close to how my FJ has been acting lately. Here is what happened: I...
  3. Maintenance Tech
    I just got the light of death on my fj. I saw the engine light come on along with the ESP light (the car with a squiggly line). I get back to the house and hook it up to the code reader and get P0031 HO2S heater control circuit low (bank 1, sensor 1). I did some online research and I believe...
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