2.8l v-6 which bank contains #1 cylinder left or right? Right bank is farthest forward viewed from front of engine.

2.7 L Delta V6
ASE names are clear. (OBD2 rules too USA)
b 1 is always on bank one so b2 is bank 2.
bank 1 is always cylinder #1 side
cylinder 1 is always the one offset forward.
S1 is always most front sensor, called up stream
S2 is always most rear (of CAT) called down stream.
so S2 B2, is bank 2, rear of cat.
the S2 is only used for CAT monitor testing, not for engine fuel rates as S1B1,S1B2 does.(both banks)
cars with Y pipe exhaust may 3 sensors and only 1 rear.(shared)

the SM service manual covers al that.
the way to cheat is easy <\called googling
and we google delta v6
2.7L (G6BA engine firing order) but I will do the SM for you, online
2.7L engine firing order: 1-2-3-4-5-6
bank 2 is other bank.
so
YOU facing the crank pulley you #1 is left bank front.
so bank 2 is right. bank. so S2 is rear sensor right side facing the engine crank pulley


googling was faster online SM is slug day. 1hr to get 1 page.



so using the map, B2 S2 is farthest point away from#6
P=pulley. S2 is down stream of CAT bank2

Notes in relation to bank numbers
•Bank 1 always refers to the group of cylinders which includes No.1 cylinder.
•The majority of small engine European vehicles will only have Bank 1 sensors fitted (i.e. 1 x Front & 1 x Rear).
•An inline 6-cylinder engine may have cylinders 1, 2 & 3 referred to as Bank 1 & cylinders 4,5 & 6 referred to as Bank 2.
•V configured engines would normally have Bank 1 & Bank 2 sensors, with again Bank 1 referring to the group of cylinders which contains No. 1 cylinder.
Notes in relation to sensor numbers
•Sensor 1 always refers to the front / regulating (Upstream / Pre-cat / Upper) sensor.
•Sensor 2 always refers to the rear / diagnostic (Downstream / Post-cat / Lower) sensor.
N.B. Some larger capacity vehicles may have 2 rear / diagnostic (Downstream / Post-cat / Lower) sensors on the same bank, which may be referred to by EOBD codes as sensor 2 & sensor 3. Sensor 2 would relate to the rear sensor closest to, or in the catalyst, with sensor 3 relating to the rear sensor furthest from the catalyst.
Notes in relation to position
In some catalogue entries, a sensor will be listed as fitting in left or right position. This is always taken from the point of view of sitting in the vehicle (i.e. For UK RHD vehicles Right = Offside, Left = Nearside).
Correct identification of the relevant oxygen sensor is more important than ever as many vehicles now may have devices such as temperature, pressure and NOx sensors fitted to the exhaust system in addition to the oxygen sensors.

4.2-liter V-6 is: 1-4-2-5-3-6. facing truck from front, left bank of cylinders is 1-2-3, closest to farthest. The right bank is 4-5-6, closest to farthest. wires from coils to plugs. Good-Day!

spark 6 , H25 engines. is right rear.
is bank 2.

cylinder 1 is the most forward cylinder on V engines. and is bank1
now you have that rule.

see cylinder 1 , is left front.?

so bank 2 is right. 2,4,6

#1 is left side, drivers, or in UK its be passengers. side/.
the word LEFT works on all cars world wide. and is clear.
we drive LHD cars here, but not in UK, or other countries.

the #1 cylinder the most forward cylinder on all v6s
just one glance from top and bingo.
H27engine
or 3.6L>

bolt the H20 to h27a are left side, #1 see photo.

3.6L
. The right bank of cylinders are number 1-3-5 and the left bank of cylinders are 2-4-6. The engine firing order is 1-2-3-4-5-6.

so Bank2 is RIGHT. as is B2s1, front. right.

as clearly seen here, see how #1 sits forward?
we have posted this answer here, like 10 times.
now 11th.

AS you look at the engine under the hood your will see that the 8 cylinders are arranged in two banks of 4. One bank of 4 cylinders is just slightly more towards the front of the car/engine than the the other. The cylinder that is closest to the front of the engine is called 1 cylinder, as you look at the engine: this is the cylinder on the front right. Fords and Lincolns number the cylinders 1, 2, 3, and 4, front to to back, on the right and then 5, 6, 7, and 8, front to back, on the left bank. Number 8 cylinder is the back left as you face the engine. I keep making reference to the orientation of the viewer when calling the engine left and right. Everything above is correct when looking at the engine under the hood. But strictly speaking the engine is labelled from the point of view of the direction of the vehicle so the right cylinder bank that you look at is actually called the 'left' cylinder bank and vice versa. Do not worry about this gratuitous confusion the cylinder 8 is still the one closest to the windscreen /firewall

2001 Buick Century Firing Order:

V6, 3.1Liter: Firing Order: 123456
While Standing in Front of the Vehicle, the Engine is Transverse, Left to Right, Nearest the Firewall, The No. 1, Cylinder on the 3.1L is closet to the Firewall, on the Left, followed by Cylinder No. 3, then Cylinder No. 5.
Then Left to Right, the Front Cylinder Bank, nearest the Bumper starts with Cylinder No. 2 on the left, Cylinder No. 4 is Center Front, and finally, Cylinder 6 is Front Right.

V6, 3.8Liter: Firing Order: 165432
Cylinder Location:
While standing in front of the vehicle, the 'Back" Cylinder bank, nearest the Firewall, Left to Right: Cylinder No. 2, then No. 4, then No. 6. The Front Cylinder Bank, Nearest the Bumper, Cylinder Location, Left to Right, Start with No. 1, then Center Front, is No. 3, and finally, the right Front Cylinder, nearest the bumper is Cylinder No., 5.

hello here is the firibg order. ther are two engines for the impala. here is both engines. 3.4 and 3.8

3.4


Starting from the front of the engine, the left bank cylinders are 1, 3, 5. The right bank cylinders are 2, 4, 6.
3.8
Starting from the front of the engine, the left bank cylinders are 1, 3, 5. The right bank cylinders are 2, 4, 6.

To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.

The 3.5L (VIN H) engine's unique ignition system has the ignition coils directly over each plug. No spark plug wires are used.
If a coil is replaced on any of the 3.1L, 3.4L or 3.8L engines, it may not be numbered, as is the factory coil. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your guide to reflect how your engine is wired.



Fig. 3.1L (VIN M) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System



Fig. 3.4L (VIN X) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System



Fig. 3.4L (VIN E) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System



Fig. 3.5L (VIN H) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System



Fig. 3.8L (VIN 1) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System



Fig. 3.8L (VIN K) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System

The firing order for the 3.1L VIN M, 3.4L VIN E, 3.4L VIN X and 3.5L VIN H engines is 1-2-3-4-5-6. The right bank cylinders are on the cowl side (rear) of the engine compartment and are numbered 1,3,5, left bank cylinders on the front side of the vehicle, are numbered 2,4,6.
The firing order for the 3.8L VIN K and 3.8L VIN 1 engines is 1-6-5-4-3-2. Starting at the front of the engine, cylinders in the left bank are numbered 1,3,5 and cylinders in the right bank are numbered 2,4,6

Hope helped (remember rated this help) Good luck.

Some cars have 2 oxygen sensors. Your is one of them. Banks are the location that the PCU computer gives.