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00' Explorer O2 sensor which ones?

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Ford Explorer | Ford Explorer Sport Trac | Mercury Mountaineer | Lincoln Aviator Forum for discussion of the Ford Explorer, Ford Explorer Sport Trac, Mercury Mountaineer and Lincoln Aviator.

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12-31-2009, 13:32	#1 (permalink)
diggerauditor Registered User Join Date: Jun 2006 Posts: 18	00' Explorer O2 sensor which ones? My check engine light has been on for awhile and I just got around to taking to Advance Auto and they checked the codes. Popped P0171 and P0174, says Bank 1 and 2 running lean. Question is, which ones are they, the ones upstream or downstream. Seeing as they are running about $60.00 each and there are 4, I'd kinda like to know which ones are the culprits. Any help would be appreciated.

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12-31-2009, 17:36	#2 (permalink)
Bert 2002 F150 XLT Join Date: Nov 2008 Location: Oregon Posts: 9,223	Re: 00' Explorer O2 sensor which ones? In most bases when you get those codes together, there's a vacuum leak. Intake gaskets or bolts will cause that. __________________ Bert

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