SERVICE ENGINE SOON LIGHT

Ford Expedition

Tiny

josh morrison

November, 26, 2007 AT 9:42 PM

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

FOUND 17085 RELATED QUESTIONS

3 Answers

Tiny

blackop555

November, 27, 2007 AT 7:09 AM

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.

Tiny

josh morrison

November, 27, 2007 AT 4:43 PM

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

Tiny

blackop555

November, 27, 2007 AT 5:24 PM

That may help! Good luck and hapy hunting

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