Oxygen Sensor location

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Jul 4, 2013 | 09:41 AM

v1n2e7t

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Oxygen Sensor location

I've been spending hours looking for these oxygen sensors in my 2010 ford expedition, i cant find any good diagrams or images. I've tried the autozone repair manual but they dont make it for this SUV. It has the 5.4L V8 triton.

Can anyone give me a detailed explanation or diagram to help me find all of them?

Jul 4, 2013 | 09:47 AM

projectSHO89

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From: St Louis

Have you tried looking at the exhaust manifolds and pipes on your truck instead?

They're not hard to find, they're screwed right into the pipes before and after the converters.

Jul 4, 2013 | 09:51 AM

JWC 3

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Joined: Dec 2012

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From: Tennessee

Upstream , sensor 1 .is before the cat . Sensor 2 , downstream is after cat . They screw into the exaust . B1S1 = pass side upstream B2S1 = driver side upstream . B1S2 = pass side downstream B2S2 = downstream driver side .