1997 Dodge Intrepid 3.5L what side is bank one?

[hickerbilly]

Howdy,
A friend analyzed my 1997 Intrepid 3.5L and told me the O2 sensor on bank one needed replacement. Is bank one the driver or passenger side of the engine?
I scoped out some other forums and got two different answers!
Thanks

[ricebike]

the upstream sensor, meaning the sensor before your catalytic converter...

the other sensor is the one after the catalytic converter...

but what was the actual obdII code, because in chrysler terms the don't mention bank one or bank 2; they mention upstream or downstream oxygen sensors

--------------
did you clear the code and see if it returns?

did you check the wiring to the sensor? sometimes it can be as easily as that...

do you have a can of pb blaster ready in case it's seized to the exhaust pipe?

special socket?

anti-seize on the threads of the new o2 sensor?

P0132—Upstream O2 Sensor Shorted To Voltage

P0133—Upstream O2 Sensor Slow Response

P0134—Upstream O2 Sensor Stays At Center

P0135—Upstream O2 Sensor Heater Failure

P0139—Downstream O2 Sensor Slow Response

P0138—Downstream O2 Sensor Shorted To Voltage

P0141—Downstream O2 Sensor Heater Failure

[hickerbilly]

Originally Posted by ricebike

the upstream sensor, meaning the sensor before your catalytic converter...

the other sensor is the one after the catalytic converter...

but what was the actual obdII code, because in chrysler terms the don't mention bank one or bank 2; they mention upstream or downstream oxygen sensors

--------------
did you clear the code and see if it returns?

did you check the wiring to the sensor? sometimes it can be as easily as that...

do you have a can of pb blaster ready in case it's seized to the exhaust pipe?

special socket?

anti-seize on the threads of the new o2 sensor?

Howdy,
Thanks for the response.
I had first gone to auto zone and they hooked up their OBD. They told me it was most likely an O2 sensor but I should go to a mechanic to determine which one it was. I took it to the only person I trust not to be a rip-off (I worked at his shop in the early 90's.)
After he ran diagnostics he came up with "sensor one on bank one." I assumed that was the drivers side and replaced it. My problem is still there and I am thinking my assumption was wrong!
I was able to get at the sensor pretty easily with a long extension with a crowsfoot atached to it and yes as with any exhaust bolt treated it with anti-sieze.
I am simply after an answer to: Which bank is bank one... the drivers or passenger side... can you help me out?
Thanks

[jpb53]

Bank 1 is the passenger side.

[hickerbilly]

Originally Posted by ricebike

your vehicle only has 2 oxygen sensors

bank one was the sensor before the catalytic converter; the one you have changed already... based upon your description

bank 2 will be the sensor after the catalytic converter; that'll mean crawling under your vehicle and looking



i gave you the list of possible trouble codes; have someone retrieve any codes from your vehicle and post up your results

Howdy again,
Thanks... I did not want to bother my friend as he is very busy but called him back a few minutes ago to see if he would clarify for me. He did and this is what we came up with:

There are 4 O2 sensors on the car on bank one there is one before the cat converter and one after and the same on bank two... I was wrong in assuming bank one was the drivers side bank and am doing the passenger side today... I usually replace things in pairs/sets anyway down to the brakes but was in a bind until I sold a steering gear this mornin'... now I'm off to the city again for another O2 sensor.
Thanks for your time.
P.S. you and my buddy must have different programs or something

[hickerbilly]

Originally Posted by jpb53

Bank 1 is the passenger side.

Thanks jpb... that was the answer I was looking for!

[ricebike]

yea sorry for the confusion...

others said bank one was on the driver side <shrugs>

but which sensor did he found during the code scan? the front sensor before the cat is sensor 1/ the rear sensor after the catalytic converter is sensor 2

hopefully after changing both front sensors the code will go away...

and "bank 1, sensor 2" code or "bank 2, sensor 2" won't show up

[wafrederick]

It is on the driver's side.Ford is the only domestic that puts the Bank one oxygen sensor on the passenger side

[sassee]

X2! Bank One, 97 Intrepid 3.5 in the drivers side!

[AWP9521]

Bank 1 is always the same side as cylinder #1 on the engine which on the 3.5 is the passenger side set of cylinders, they are the set arranged closer to the front of the engine.

Looking at where the timing belt case meets the heads you will see that the distance from the head to the timing belt case cover is thinner on the passenger side than the drivers side, no measurement is necessary, the distance is that noticeable.

Sensor 1 is commonly called the "upstream" sensor, and is located before the converter, sensor 2 is commonly called a "downstream" sensor and is located after the converter.

[jpb53]

Here is a diagram. http://www.wellsmfgcorp.com/pdf/firi...dge_car_26.pdf
AWP I was born and lived in Erie until I was 16. Been in AZ ever since. Small world huh? Take care.

[AWP9521]

Been here all my life, been to AZ once or twice too but just to visit. Yeah the world is indeed small, you take care too.

[reb9201]

Originally Posted by hickerbilly

Howdy,
A friend analyzed my 1997 Intrepid 3.5L and told me the O2 sensor on bank one needed replacement. Is bank one the driver or passenger side of the engine?
I scoped out some other forums and got two different answers!
Thanks

I read this thread and sassee is incorrect...


The 3.5L engine is as follows: (just rebuilt my engine after blown head gasket)

BANK ONE is PASSENGER SIDE containing Cylinders 1,3 and 5.

Bank Two is Driver's side containing cylinders 2,4 and 6!

Firing Order: 1,2,3,4,5,6

Easy! Dodge made it simple!

Cylinder 1 = BANK ONE
Cylinder 2 = Bank Two

There ARE 4 Oxy sensors on the 3.5L engine. I found that the downstream sensor (using a DRB II Scanner), bank 1, #2 on my car had died...so I jacked it up, put a jack stand under it and found it (passenger side)...it is on top of the exhaust pipe and about 1 1/2 feet downstream and level with the bottom of the car from the exhaust connecting flange where the exhaust manifold connects to the exhaust pipe. It is actually IN FRONT of the calatytic converter on both sides! Both the upstream sensors are right near the end of the exhaust manifold itself, right behind your exhaust manifold covers. Top ones are very easy to access with the slotted socket made for oxy sensors. Bottom ones however are a little more difficult laying under the car ...but if you have a lift, a whole lot easier!

Hope that clears up the Bank issues!