SERVICE ENGINE SOON LIGHT

  • Tiny
  • josh morrison
  • Ford Expedition

Hello I am truly frustrated with this light! I have changed coil packs, spark plugs, o2 sensors, air filter, cleaned the intake and flushed and cleaned the injectors I am in desperate need of an answer PLEASE HELP!
I got the vehicle scanned and it is telling me BANK 1 IS RUNNING LEIN. What can I do to resolve this problem?
JOSH MORRISON

Monday, November 26th, 2007 AT 9:42 PM

3 Answers

  • Tiny
  • blackop555
  • Expert
  • 10,563 posts

That would usually mean that THe bank one O2 sensor is bad. Do you notice any driveabliity problems? Reset the light see if it comes back.

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Tuesday, November 27th, 2007 AT 7:09 AM
  • Tiny
  • josh morrison
  • Member

I did reset the light it did come back on I just repalace my K & N filter back to a paper filter hopefully that will resolve the problem. I did start having problems when I switched it out also the K & N did not sit well inside the housing I will let you know in a day or two

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Tuesday, November 27th, 2007 AT 4:43 PM
  • Tiny
  • blackop555
  • Expert
  • 10,563 posts

That may help! Good luck and hapy hunting

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Tuesday, November 27th, 2007 AT 5:24 PM

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