Drivers side after the cat.

 

alright thanks :wave:

 

are all of the o2 sensors interchangable? i dont want to order one if it only fits a specific location.:huh::wave:

 

If you were to do a little research you would find that they are not the same and have different part #'s for different locations.

SEARCH IS YOUR FRIEND!!!!!

 

Bank 1 is passenger side, fyi.

A downstream sensor stuck high means its not reading as much oxygen as there really is, and the truck will lean out the mixture to attempt to get more oxygen to the cat (to keep cat efficiency up).

How many miles on the sensors? I'd definately replace both downstream sensors (do them in pairs) and if you have more than 75k on the old ones, I'd just replace the upstreams too. They are $50 on rockauto.

 

Bank 1 is passenger side, fyi.

A downstream sensor stuck high means its not reading as much oxygen as there really is, and the truck will lean out the mixture to attempt to get more oxygen to the cat (to keep cat efficiency up).

How many miles on the sensors? I'd definately replace both downstream sensors (do them in pairs) and if you have more than 75k on the old ones, I'd just replace the upstreams too. They are $50 on rockauto.

Wrong! Bank 1 is the odd numbered cylinders which are on the drivers side. Bank 2 is the even numbered cylinders which are on the passenger side.

 

I thought bank 1 was the driver's side. I had a p0141 a few months ago that was bank 1 sensor 2. I switched out the rear driver's side sensor, and I've been free of the CEL since

 

alright. so im finding two seperate pre-cat sensors, and it seems like the post-cats are identical. does this seem right?
also you said to buy them in pairs, so buy two rears and change both? because the other1 will porbably fail shortly after the first i imagine:waiting:

and i have just over 80,000 miles:wave:

:banana2:Thanks guys for all the help so far and probably alot in the future:drive:

 

With 80K, I'd change them all and yes, the rear ones are the same but the front ones are different.

 

Sorry, I stand corrected. Bank 1 is the bank with cyl #1., but what he ^ said for the rest of it.

It is odd though that my bank 2 sensor shorted to voltage code went away after changing the bank 1 sensor (but it did drive like shit until changing the bank 2 sensor)