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p0420

  1. Problems & Troubleshooting
    2006 redline 120000 miles bought it recently for peanuts. few days later engine light comes on, using torque pro, the fault os for p0171- system too lean my long term fuel trim is almost 30% i clean the maf, check the voltage, it seems fine. start looking for exhaust leaks and find that...
  2. Problems & Troubleshooting
    Hello there guys, I have visited these forums a few times since ownin my Redline but havnt had to post yet, But sadly today is the day I must discuss a odd series of problems. to start, I was driving in town running errands to get ready for a fishing trip in the mountains, a check engine light...
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