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Thread: P0171 code bank 1 running lean...

  1. #1
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    P0171 code bank 1 running lean...

    So I've been getting my 04 DTR up to show quality and havnt driven it in a whial then the other day I decided to take a leisurely stroll in er and everything went to ****... engine started running very rough,the check engine light came on with this code

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  2. #2
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    Quote Originally Posted by frosst421 View Post
    So I've been getting my 04 DTR up to show quality and havnt driven it in a whial then the other day I decided to take a leisurely stroll in er and everything went to ****... engine started running very rough,the check engine light came on with this code

    Sent from my SM-N920V using Tapatalk
    You obviously have access to the internet..... lookup the code.

    HINT: search for "ford P0171"
    Last edited by fastblackmerc; 03-21-2017 at 08:16 AM. Reason: HINT
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  3. #3
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    Unfortunately, the code does not pinpoint a specific cause, could be anything from, dirty maf,to bad injector,to vacuum leak, bad 02 sensor, fuel rail pressure, and more.
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  4. #4
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    Lean bank one typically indicates a vacuum leak. That's where I'd start.


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  5. #5
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    Quote Originally Posted by RubberCtyRauder View Post
    Unfortunately, the code does not pinpoint a specific cause, could be anything from, dirty maf,to bad injector,to vacuum leak, bad 02 sensor, fuel rail pressure, and more.
    Correct and the OP can check each of them out.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  6. #6
    Join Date
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    Location
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    bank 1 is passenger side do would check boots at pcv, they get brittle and crack causing vac. leak
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  7. #7
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    Quote Originally Posted by RubberCtyRauder View Post
    bank 1 is passenger side do would check boots at pcv, they get brittle and crack causing vac. leak
    This is a good place to start.

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