AFR at idle?

Discussion in '1994 - 1995 Specific Tech' started by 95opal, Jul 6, 2007.


  1. 95opal

    95opal Member

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    I just started to get underway with the dattalogging and noticed that at idle the AFR is anywhere from 14.7 to 16.0. Is this normal or is it a bit lean? If lean should I be seeing a consistent 14.7 or something close to that? Any thoughts or suggestions welcome as this is all new to me.
  2. Killercanary

    Killercanary The car that set the bar. Founding Member

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    Rich, mine floats between 14-16 too. I was actually going to post a thread with this very question. I think I have my car fixed (it appears to have been a bad connection between the eec tuner and EEC) and I just got done wiring up my innovate SSI-4, so I'm going to go for a ride now and do a little datalogging. I post back here with what I see/find with my datalogs.
  3. 95opal

    95opal Member

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    Paul... Let me know what you find out as Im heading over to the shop to take the car out for some dattalogging runs. I was just worried that at idle it was a little lean.
  4. final5-0

    final5-0 Mustang Master

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    I'd not worry about it :)

    Over the years, I've talked to quite a few who say they had similar results.

    Grady
  5. m0l0

    m0l0 Member

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    Its completely normal to get arround 14.5-16 its always jumping arround that AFR
  6. 95opal

    95opal Member

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    Grady, Thanks for the piece of mind. I actually went through the material Don sent and found out that it was OK.
  7. 69clark

    69clark Founding Member

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    I would say that should be fine Rich. A little lean on idle won't hurt anything, and if any thing it maybe better. I know when we raced snowmobiles we liked to set the idle a little rich. Different beast altogether but the theroy is the same.
  8. Bosko5.0

    Bosko5.0 Active Member

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    mynes in that range.
  9. 94gsl5.0

    94gsl5.0 New Member

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    Seems fine to me. I try to target 15 to 16 for idle.

    Idleing a bit lean makes things slightly easier on the wallet when it comes to the gas pump ;)

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