DIY: M271 O2 sensors
07-18-2007, 05:49 PM
#1
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DIY: M271 O2 sensors
I want to change both myself and post a write-up yet need some help.
From the engine bay I cannot see where the sensor plug is. The wire runs from the sensor, over the transmission, and to the drivers side yet I cannot see where it ends and where the plug is.
Has anyone changed them?
From the engine bay I cannot see where the sensor plug is. The wire runs from the sensor, over the transmission, and to the drivers side yet I cannot see where it ends and where the plug is.
Has anyone changed them?
07-19-2007, 11:59 AM
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EVE
Yo - I've never actually done a replacement of an O2 sensor yet.. only for header installs (to remove them temporarily - but not replacement). You're talking about replacing the wiring altogether for an OEM new one right?
07-19-2007, 01:20 PM
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Need to find where the wiring goes to unplug it. I have removed the sensors from the header many times, just never removed the sensor from the vehicle.
07-20-2007, 01:41 PM
#7
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Can't you just ask a service tech at your local dealer? Mine has always been pretty helpful when I come with questions, and has even "given" me a couple of misc. parts at times, with enough Best Buy giftcard tithes.
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07-20-2007, 02:06 PM
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2005 C55, 1988 260E, 2000 Chevrolet Silverado
I'm looking again, had the same question. After I got this OBD II scanner I found I don't need to change them now. Give me a few minutes to look.
07-20-2007, 02:16 PM
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I really need to order the DVD manual if I am going to keep this car.
Thanks Russell_Stevens, that would help me out!
09-09-2008, 01:50 PM
#13
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Take off belly panels under the engine and then you will see where the O2 sensors wires lead to. It is under the bottom left of the engine. Just follow the sensor wires! It takes a whole 15-20 minutes to do including jacking the car up.
09-09-2008, 02:15 PM
#14
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Ive been under my friend's c230k and im pretty sure if you just take off the panel that covers the oil pan, you should be able to see the o2 sensors...
I have no idea how you'd unplug them though... do keep us updated: would be nice to see how its done
I have no idea how you'd unplug them though... do keep us updated: would be nice to see how its done
