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troubleshoot codes

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Old Sep 28, 2008 | 11:00 PM
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my car is running lean in bank 1 and 2. never had this code before does it have to do with the o2 sensors or is it something else.
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Old Sep 29, 2008 | 11:01 AM
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It's unlikely both of your O2s would go bad at the same time. Get a fuel pressure gauge and check your fuel pressure at the rail. Sounds to me like your fuel pump may be going out, causing a lean condition.
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Old Sep 29, 2008 | 11:06 AM
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It could also be a MAF problem, but it is most likely to do with fuel pressure when both codes are set like that.
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Old Sep 29, 2008 | 03:43 PM
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i will change the pump i was going to put in a walbro 255 pump either way. hopefully that will solve the problem
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Old Sep 29, 2008 | 06:12 PM
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i read the codes and the 2 codes that came up are PO174 bank 2 running lean.

i did research and people say its either the maf, fuel filter clogged or fuel pump.

im going to put in my walbro 255 pump that i had in my formula and change the fuel filter and see if that solves the problem
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