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check engine light

  1. Ppe exhaust with a check engine light

    Care, Maintenance, and Troubleshooting
    For those that have a full ppe exhaust system, did removin the precats cause a check engine light? I went quite a while without a code until my engine mounts went. After that I havent been able to get a decent seal and I've been throwing a catalytic deficiency code. Every shop I go to is...
  2. P0303

    Care, Maintenance, and Troubleshooting
    After searching, I found some posts with similar issues but I wasn't sure how identical they may be to mine. I just bought a 2000 MR2, stock, with 94K miles. Right after I bought it, the check engine light came on (go figure). It threw P0303 and another code reading random misfire. I changed...