rear o2 sensor location
Thread Starter
Burning Brakes
Joined: Jun 2009
Posts: 787
Likes: 1
From: New Baltimore Michigan
rear o2 sensor location
install lg headers on my car right now do the rear o2 sensors cross over to each pipe ( does driver side o2 thread into passenger side pipe and vice versa) or driver side to driver side and passenger side to passenger side?? car is an 04z so all 4 sensor go back into same location did not pay attention to rear sensors when i removed
Thanks
Steve
Thanks
Steve
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
I'm not sure as it sort of depends on how the crossover pipe is plumbed internally. You really need the left forward and rear sensors to be on the same side and the same goes for the right forward and rear. If you don't, you'll have issues for sure.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Front: They do not cross, i.e., driver's side O2 to driver's side plug and passenger's side O2 to passenger side plug
Rear: They do cross, i.e., driver's side O2 to passenger side plug, Passenger's side O2 to driver side plug
Rear: They do cross, i.e., driver's side O2 to passenger side plug, Passenger's side O2 to driver side plug
Thread Starter
Burning Brakes
Joined: Jun 2009
Posts: 787
Likes: 1
From: New Baltimore Michigan
THANK YOU
Steve
Last edited by machz800ps; Oct 31, 2010 at 06:11 PM.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Ok, I'll default to those who know for sure because I don't. I was looking at it from a logical standpoint only. Left front and left rear seeing the same exhaust and similar for the right, on a stock setup, changing that would or could have caused a problem. Now if you reversed the sensors on the rears and kept them on the correct exhaust flow, then there wouldn't be a problem as far as logic goes.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Ok, I'll default to those who know for sure because I don't. I was looking at it from a logical standpoint only. Left front and left rear seeing the same exhaust and similar for the right, on a stock setup, changing that would or could have caused a problem. Now if you reversed the sensors on the rears and kept them on the correct exhaust flow, then there wouldn't be a problem as far as logic goes.
Now enter headers, many have the fronts angled similar to the stock rear and there the confusion begins especially since the stock front cable may not reach the correct side without an extension.
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Burning Brakes
Joined: Jan 2010
Posts: 763
Likes: 0
From: Murfreesboro TN
Ok, I'll default to those who know for sure because I don't. I was looking at it from a logical standpoint only. Left front and left rear seeing the same exhaust and similar for the right, on a stock setup, changing that would or could have caused a problem. Now if you reversed the sensors on the rears and kept them on the correct exhaust flow, then there wouldn't be a problem as far as logic goes.
If the front sensors get swapped, the left side will try to control the right side and vice versa and it doesn't work.
