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  1. J

    Check engine light - Did I cause it?

    Minor update. I took it out again tonight, and noticed something different about the CEL. It happens that it comes on when I am coating in 6th gear. It doesnt seem to do it in any other gear, and doesn't have to be after I got on it. It feels as strong as ever, and the idle is perfect...
  2. J

    Check engine light - Did I cause it?

    Wow, thanks for all of the information so quickly. I usually get a few fuel pump codes, because I have a kill switch and occasionally I try to start the car and forget to hit the switch. So, the fuel pump isn't working when I turn it over. I just resolved a slight lean issue above 5500 rpm...
  3. J

    Check engine light - Did I cause it?

    A bigger question might be, could it cause the computer to have an issue adjusting the air/fuel, which could cause an expensive problem?
  4. J

    Check engine light - Did I cause it?

    I just got through doing a number of things to get rid of alot of annoying idle and throttle issues, and the car is driving great. The idle is nice, it comes down quickly, and surge is almost completely gone. I am getting a check engine light when letting off of the throttle under load. It...
  5. J

    Help me create the "Surging Idle Checklist"

    Thanks, good info. One question. Is it necessary to use the alternator ground specifically, as opposed to how I did it by connecting it to a 1/O cable directly from the battery ground?
  6. J

    Help me create the "Surging Idle Checklist"

    Great thread. I'm new over here, and don't remember if I saw a link from another Mustang forum or not, but great thread. I have been fighting with some idle and throttle issues for some time now. (as alot of us have) Recently, it started when I went to a new tuner and he reset my tune. At...