All US Spec Montero's are California Spec? O2 Sensor Question

[rahee006]

The car in Question is a 1998 Mitsubishi Montero SR 3.5L V6 ( 6G74 ) it has 4 Oxygen sensors. 2 Upstream 2 Downstream, Ive located them. They are stuck pretty tight in there.
I am wondering if i order 2 Upstream DENSO 2344631 and 2 DENSO 2344656 or do i get a Left and right of each so that makes it 4 Individual oxygen sensors instead of Pair.
This is my first post here, Any advice i'l greatly appreciate.

My car has 8 codes regarding Oxygen sensors. on both banks.
This is the car, I picked it up for $520

 

[Salonika]

What are the codes? My 98 is originally from Cali and it has 4 o2 sensors and 3 cats. You should be able to get exactly what you need. You'll want to get them right so the harness lengths are correct.

 

[KyleT]

Not sure but my 98 only had one upstream and one downstream.


Sent from my iPhone using Tapatalk

 

[rahee006]

P0156 02 Sensor Circuit Malfunction (Bank 2 Sensor 2)
P0161 Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control
P0135 Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0141 O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P1715 TCM pulse generator circuit fault
P0705 Transmission Range Sensor Circuit Malfunction (PRNDL input)
P0335 Crankshaft Position Sensor A Circuit Malfunction
P0120 Throttle Position Sensor/Switch (TPS) A Circuit Malfunction
P0305 Cylinder #5 Misfire Detected

these are the codes i have retrieved.

 

[jlocster]

Not all Gen 2.5 Monteros are California spec. Cali spec cars have 4 o2 sensors each with different part numbers. 2 are upstream, 2 are downstream. You'll have to look on rockauto for the downstream part #s though. The Gen 2.5 parts thread sticky has the left and right upstream part numbers.

 

[rahee006]

Mine has 4, so i am assuming its a california spec, had to return 3 sensors, and get the 3 particular one. Is the Montero Sport 3.5L exhaust same as the Montero/Pajero/shogun 3.5L ?

 

[jeep-N-montero]

Mine has 4, so i am assuming its a california spec, had to return 3 sensors, and get the 3 particular one. Is the Montero Sport 3.5L exhaust same as the Montero/Pajero/shogun 3.5L ?

Which part of the exhaust are you referring to?

 

[rahee006]

its this part.

 

[DeltaFry]

This is a sub part of the problem and my 20 cents.

I have a 2005 Montero and got these codes -

P0171 - System too lean - http://www.helpforcars.net/obd_codes/p0171_mitsubishi.html
P0134 O2 Sensor Circuit No Activity - http://www.doityourself.com/forum/p...tc-now-p0171-but-o2-sensor-has-voltage.html#b
PO131 O2 Sensor Circuit Low Voltage -

I got the sensor changed and wallah, no more codes and problems. All the best.

More info here - http://www.justanswer.com/mitsubishi/6ok4e-mitsubishi-montero-sport-limited-month-ago.html

 

[rahee006]

i already have bought the sensors, i cudnt take the downstreams off, i took it to a shop, they heated it up, still didnt come off. So they suggested i change the Exhaust pipe where the O2 sensors are housed, will be cheaper that way.