Diag code P0171 and P0174 Help Please

[kexplorer2001]

New to forum..... I have a 2001 Ford Explorer sport 2wd V6 4.0l 114k miles.
Check engin lite on with code P0171 and P0174. what what I can gather from asking around. it sounds like bad Oxygen sensors. I'm told there 4of them 2 uppers one on each side and 2 lowers on each side. please confirm with your help .. does any one have the ohm specs for each when hot or cold. need help the find issue so I can repaire.

Thanks all

 

[1998Exp]

Unlikely to be oxygen sensors. These codes are for 'system too lean' on both sides of the engine. This usually indicates 'unmetered air', or in simple language, a vacuum leak. The V6 SOHC engine (if that's the one you have) is notorious for failing manifold gaskets, causing this problem. Search previous postings - there is plently of information on the subject.

By the way, you cannot test an oxygen sensor by measuring its resistance. It acts like a battery which, when hot, produces a voltage that depends on oxygen content of the exhaust gas.

.

New to forum..... I have a 2001 Ford Explorer sport 2wd V6 4.0l 114k miles.
Check engin lite on with code P0171 and P0174. what what I can gather from asking around. it sounds like bad Oxygen sensors. I'm told there 4of them 2 uppers one on each side and 2 lowers on each side. please confirm with your help .. does any one have the ohm specs for each when hot or cold. need help the find issue so I can repaire.

Thanks all

 

[swshawaii]

http://www.explorerforum.com/forums/showthread.php?t=314670