P0171

[Ranger379]

hey guys, couple days now i have gotten that code, system too lean bank one. i got codes periodically since i bought it, forget the number but it was 02 sensors/ bad cat converter. is this stemming from that problem. could it be bad spark plug wires? i put new wires on and they where lying up against something and they got burned pretty badly - all tho they are not arcing yet but do need replaced.
any help on y i get this code is appreciated!

 

[Rottie]

I would think that bad plug wires would create more of a rich condition, due to incomplete combustion. A lean condition is often caused by a vacuum leak. Check all of your vacuum hoses, listen for hissing sounds under the hood.

 

[Ranger379]

well if a vac leak is the only explanation, i know where my problem is, thanks alot! i repaired a vac line i broke last year, its probably that lol

 

[dogfriend]

Vacuum leak(s) are a likely cause of the problem. See Ford manual page in this thread:

http://www.explorerforum.com/forums/showthread.php?t=145587&highlight=p0171

 

[CDW6212R]

As well as lower fuel pressure, good luck.