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Which side of the engine is bank one?

Tiny
MANNY4201
  • MEMBER
  • 2001 LINCOLN LS
  • V8
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
I Checked the engine computer and it said it is running rich, also my oxygen sensor, bank 2, section 1 is bad. My question is :does the bad oxygen sensor make the engine run rich? And which side is bank 2 and which one is section 1?
it is a Lincoln LS, 2001 with 3.9 V8 engine, 130000 miles.A reponse will be very much appreciated. Thank you.
Manny
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Thursday, September 17th, 2009 AT 10:19 PM

6 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Yes, a faulty O2 sensor can cause lean & rich fuel issues. The passenger side of the engine is the bank 2. Section 1 will be the sensor located before the catayltic converter.
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Thursday, September 17th, 2009 AT 10:27 PM
Tiny
MANNY4201
  • MEMBER
  • 8 POSTS
Thank you very much bluelightnin6, also I'm a little confused now, auto zone tell me that bank 2 is on the driver side, what you think?
Manny
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Thursday, September 17th, 2009 AT 11:37 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Passengers side will be bank 1.. Whichever side of engine that cylinder 1 is located on is bank 1, other side is bank 2. Diagram below shows that your vehicle's cylinder 1 is located the passenger side.


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_989.jpg

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Thursday, September 17th, 2009 AT 11:42 PM
Tiny
MANNY4201
  • MEMBER
  • 8 POSTS
Thanks again, looking at diagram #1 cylinder is on the right(passage side)I'm confused.
Manny
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Friday, September 18th, 2009 AT 10:52 AM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
So sorry about that, the arrow had me confused haha. You are correct, it is passenger side.
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Friday, September 18th, 2009 AT 10:55 AM
Tiny
MANNY4201
  • MEMBER
  • 8 POSTS
Hello bluelightnin6, and thanks again, diagram of engine show piston #1 on passage site, so what now, I'm confused.
Manny
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Friday, September 18th, 2009 AT 10:56 AM

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