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BMW X5 3.0 2002 - Mixture Lean, codes P0174 and P0171 #
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Posted by Ian Waring on May 11, 2010, 10:05 pm
Stored fault codes PO174 and 171 - fuel trim banks 1 and 2 Lean and Permisable range exceeded.
Large inlet rubber boot split. Boot replaced and engine runs great.
Have reset adaptions, but LTFT is -232ms and STFT is 94%. Can anybody tell me what they should be?
Am I correct - LTFT is very lean?
Engine light comes on after 3 miles, or one full day.
Have disconnected battery to try and reset ECU.
Have scope tested with Pico. Oxygen sensors switching, exhaust gases correct + Maf sensor.
Am having Inlet Manifold and Breathers smoke tested tomorrow.
Any help would be appreciated.
Message Thread:
BMW X5 3.0 2002 - Mixture Lean, codes P0174 and P0171 #
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Ian Waring
May 11, 2010, 10:05 pm
Re: BMW X5 / Mixture Lean
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Allan Davis
May 12, 2010, 5:46 am
Re: BMW X5 / Mixture Lean
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Karen Waring
May 12, 2010, 11:58 am
Re: BMW X5 / Mixture Lean
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Mark Carter
May 12, 2010, 8:41 pm
Re: BMW X5 / Mixture Lean
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Karen Waring
May 12, 2010, 10:28 pm
Re: BMW X5 / Mixture Lean
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Ian Waring
May 12, 2010, 10:31 pm
Re: BMW X5 / Mixture Lean
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aidan birley
May 12, 2010, 10:46 pm
Re: BMW X5 / Mixture Lean
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Ian Waring
May 12, 2010, 10:55 pm
Re: BMW X5 / Mixture Lean
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Mark Carter
May 13, 2010, 6:40 am
Re: BMW X5 / Mixture Lean
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Antony Powell
May 13, 2010, 11:20 am
Re: BMW X5 / Mixture Lean
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Ian Waring
May 13, 2010, 9:56 pm
Re: BMW X5 / Mixture Lean
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Mark Carter
May 14, 2010, 7:28 pm
Re: BMW X5 / Mixture Lean
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Ian Waring
May 14, 2010, 9:56 pm
Re: BMW X5 / Mixture Lean
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Mark Carter
May 15, 2010, 9:21 am
Re: BMW X5 / Mixture Lean
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Dave Hill
May 15, 2010, 10:04 pm
Re: BMW X5 / Mixture Lean
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Pete Mutlow
May 16, 2010, 11:08 am
Re: BMW X5 / Mixture Lean
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Mark Carter
May 16, 2010, 11:16 am
Re: BMW X5 / Mixture Lean
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Ian Waring
May 16, 2010, 11:40 am
Re: BMW X5 / Mixture Lean
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aidan birley
May 16, 2010, 12:34 pm
Re: BMW X5 / Mixture Lean
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Carl Ford
May 16, 2010, 9:34 pm
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