Hello i have a 2003 ford expedition 4x4 that has lean leaks on bank 1 and bank 2 codes p0171 and p0174, what are the most common issues?

Asked by Rogelio May 13, 2017 at 11:37 AM about the 2003 Ford Expedition XLT 4WD

Question type: Maintenance & Repair

its a 2003 Ford expedition 4x4 and 5.4L triton engine it also has a p0308 code
its a cylinder missfire i believe.

9,095

CITYLIFE404 answered 7 years ago

Fix the misfire on 8 and retest, replace coil and plug on 8 and replace all other plugs

Mark helpful

Rogelio answered 7 years ago

will do i'll tell you how it goes thank you.

Mark helpful

Guru9ZV3CW answered 4 years ago

Change plug 8 . Check for toryism

Mark helpful

Your Answer:

Hello i have a 2003 ford expedition 4x4 that has lean leaks on bank 1 and bank 2 codes p0171 and p0174, what are the most common issues? 3 Answers

its a 2003 Ford expedition 4x4 and 5.4L triton engine it also has a p0308 code its a cylinder missfire i believe.

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my expedition is giving me codes P0171 and P0174 which means system too lean on bank1 and bank 2 2 Answers

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I have a 1997 ford expedxition 4wd 5.4 my check engine light is on and autozone checked it for me the codes were P0174 and P0307.P0307 said there was a misfire in cylinder 7 the plug and coil are both new what else could cause it to misfire I am thinking maybe the fuel injecter is there a way to check the injecter to see if it is working? P0174 say bank 2 has a rich or lean air/fuel ratio possible cause if bank 1 and 2 are set together possible pressure condition, or failed heated oxegen sensor bank 2 sensor 1 not sure where this sensor is located. Also not sure what bank 1 or bank 2 means lol. Appreciate any help I can get with this problem! 2 Answers

explained in question

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Hello i have a 2003 ford expedition 4x4 that has lean leaks on bank 1 and bank 2 codes p0171 and p0174, what are the most common issues?

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Hello i have a 2003 ford expedition 4x4 that has lean leaks on bank 1 and bank 2 codes p0171 and p0174, what are the most common issues?

3 Answers

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