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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 08-02-2005, 04:33 AM   #1
EDawg
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O2 sensor: i may have gotten mine mixed up

ok, this is concerning the post cat o2 sensors. underneath the plastic cover above the engine, there are 2 wires where you connect the post cat sensors to. i thought i had correctly kept track of which wire plugs into which o2 sensor, but now i'm kinda doubting myself. anyway, one of them is closer to the firewall , while the other one is closer to the front of the car. so right now, i have the post cat sensor for the exhaust manifold closer to the firewall plugged into the wire clipped closer to the firewall, and the sensor for the exahaust manifold closer to the front of the car plugged into the wire clipped closer to the front of the car. so is this correct?? i know my description is somewhat confusing, but basically i'm assuming the the wire that is directly across from each exhaust manifold is for the post cat o2 sensor of that exhaust manifold.
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Old 08-02-2005, 12:14 PM   #2
Solid
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Does this help at all?

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Old 08-06-2005, 09:56 AM   #3
Zyaltr
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Quote:
Originally Posted by EDawg
ok, this is concerning the post cat o2 sensors. underneath the plastic cover above the engine, there are 2 wires where you connect the post cat sensors to. i thought i had correctly kept track of which wire plugs into which o2 sensor, but now i'm kinda doubting myself. anyway, one of them is closer to the firewall , while the other one is closer to the front of the car. so right now, i have the post cat sensor for the exhaust manifold closer to the firewall plugged into the wire clipped closer to the firewall, and the sensor for the exahaust manifold closer to the front of the car plugged into the wire clipped closer to the front of the car. so is this correct?? i know my description is somewhat confusing, but basically i'm assuming the the wire that is directly across from each exhaust manifold is for the post cat o2 sensor of that exhaust manifold.
That correct even if they where mixed up they would be fine...BTW these are Pre cat, not post.
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