Thread: What's causing this?

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  1. #1 What's causing this? 
    BwolfGT
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    Default 10-02-2009
    I've got a system too lean code on bank one only, checked the vac lines and they're good. I'm stumped, anyone?
    1998 GP GT - Topswap - Ported M90 - N* - 4" FWI - Poly Mounts - 3" DP - 180 Tstat - Alt. Rewire - 3.29 gearing - Full Exhaust - Custom Tune
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  2. #2 Re: What's causing this? 
    Scimmia
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    Default 10-02-2009
    Is this something that just started happening? Are your fuel trims pegged all of the time, or only some of the time?

    We only have one bank, so it's just telling you the system's running lean. Could be a vac leak, bad MAF, exhaust leak, fuel pressure, etc, etc.
    Last edited by Scimmia; 10-02-2009 at 04:56 PM.
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  3. #3 Re: What's causing this? 
    BwolfGT
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    Default 10-02-2009
    Quote Originally Posted by Scimmia View Post
    Is this something that just started happening? Are your fuel trims pegged all of the time, or only some of the time?

    We only have one bank, so it's just telling you the system's running lean. Could be a vac leak, bad MAF, exhaust leak, fuel pressure, etc, etc.
    Think it might be the bad MAF. Anyone got one for sale?
    1998 GP GT - Topswap - Ported M90 - N* - 4" FWI - Poly Mounts - 3" DP - 180 Tstat - Alt. Rewire - 3.29 gearing - Full Exhaust - Custom Tune
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