raidokoiv

iTrader: (1)

Hello
Can i use front sensor after catalytic where is rear sensor

Burklow

iTrader: (3)

Not sure your question. Maybe this'll help.

Front O2 sensor in O2 housing is needed for adjusting ECU fuel trims and such. Someone could probably elaborate on this better, but that's the gist.

Rear O2 sensor is a check for the cat's efficency. If it is malfunctioning or being spaced with a CEL fix, this doesn't affect ECU in any way. The sensor doesn't do anything, but create CELs.

redboosted05

iTrader: (3)

the o2 sensor after the cat is your rear or DOWNSTREAM o2 sensor your front or UPSTREAM o2 sensor is located on you o2 housing coming right off the turbo you can see the sensor when you open the hood if you cant see it the gray wire running on your top heat shield goes to the front o2 sensor. Hope this helps

mitsuboost30

iTrader: (34)

His question is can you use the rear o2 sensor for the front...
per say can u swap the o2 sensors.... Will the rear work in the front!

lexat20

iTrader: (24)

I dont think the second sensor has a long enough wires to cover the o2 housing sensor.

raidokoiv

iTrader: (1)

yes that's what I thought, that is it possible to use it?appearance and connector is the same

mitsuboost30

iTrader: (34)

Im not sure bud... i just didnt think people were understanding what you were asking so I thought Id make it more direct
I have been wondering this aswell..
but the price differences from Mitsu for the two leaves me to believe that it is not possible.. due to almost the double price fro the front vs the rear..
Someone post and answer this!!!!

raidokoiv

iTrader: (1)

ok thanks

rsboy

iTrader: (48)

Check part numbers, but I don't think they are swappable. Yes the front has a longer wire, I think. Also, the price difference on the sensors might be a hint.

Mr. Evo IX

iTrader: (5)

I think the OP is asking if they are interchangeable.

RoadSpike

iTrader: (5)

I'm pretty sure they are swappable but the question would be why, both are 4 wire sensors so the output should be very similar.

The problem i see though is that the rear sensor actually costs more to replace than the front sensor (http://www.oxygensensors.com/catalog.php?&pkey=1423022) so why cut up a good rear sensor only to spend more money replacing it?

I'd just buy the front sensor.

raidokoiv

iTrader: (1)

just curiosity.
because my rear sensor is broken(branch cut the wires) and i have some front sensors

Burklow

iTrader: (3)

Ohh now I understand.

I'm 99% sure the rear is not interchangeable with the front. I believe one member mentioned they are different Mitsu part numbers and do not cost the same. If you have extra front sensors, you can try to put one in the rear. It is worth a shot.

besk

hi mate,during this time somebody tried?
my front o2 sensor is died and i would like to replace it with the rear one..

ISPEVO8

seeing that its just the rear you want to try plug it in clear the cel and see if it comes back on