I am redoing the xhaust on my truck, and there are 2 O2 sensers. I accidently mixed them up and dont remember which is which. Does it really make a difference? One before and one after the cat.
02 Sensor.
96daksport
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I am redoing the xhaust on my truck, and there are 2 O2 sensers. I accidently mixed them up and dont remember which is which. Does it really make a difference? One before and one after the cat.
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Good point - sorry I forgot to let you know that I bought sensors without plugs - hardwired the original plugs to them.
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Hmmm... So even though they look the same they probably do not mix?
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just to make sure I would look at the wiring diagram for the emissions control on the truck - I wired mine up using the diagram and have had no issues - one upstream and one downstream - both the exact same sensor. If they are wire incorrectly they will throw codes like a mother..........four wires - two for the heater, one ground, one signal.
The diagrams are on this site - they are very good - look in the trouble shooters forum and click on the fsm's. they contain the diagram that you need.
The diagrams are on this site - they are very good - look in the trouble shooters forum and click on the fsm's. they contain the diagram that you need.
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Bringing my own thread back from the dead.
I got the truck back the exhaust is all peachy kean... now there is a check engine light. I ran the code it says O2 circuit.
Could this possibly be from going from a factory 2.5 inch cat to a high flow 3 inch cat? Is that throwing off the rear sensor?
I got the truck back the exhaust is all peachy kean... now there is a check engine light. I ran the code it says O2 circuit.
Could this possibly be from going from a factory 2.5 inch cat to a high flow 3 inch cat? Is that throwing off the rear sensor?
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