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Old 01-21-2017, 02:44 PM   #1
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Bank 1 / Bank 2

Are all vehicles the same? Bank 2 passenger side?

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Old 01-21-2017, 02:57 PM   #2
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When viewed from the rear, bank 1 is on the right side (passenger US).
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Old 01-21-2017, 03:37 PM   #3
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Quote:
Originally Posted by particlewave View Post
When viewed from the rear, bank 1 is on the right side (passenger US).
Are you referring specifically to the Boxster? I've had cars where that wasn't the case.
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Old 01-21-2017, 04:08 PM   #4
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This is why it is less confusing to use 4-5-6 or 1-2-3. The cylinder numbers are marked on the engine but are feint.For my rebuild I used a paint-pen to mark them on the crankcase and intake to void silly confusion when dealing with error codes.
Important with the M96 because of the 996/986 engine reorientation.
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Old 01-21-2017, 10:12 PM   #5
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Originally Posted by 78F350 View Post
Are you referring specifically to the Boxster? I've had cars where that wasn't the case.
Yes, for all 986's. I believe the 996 is the other way around.
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Old 01-22-2017, 12:10 PM   #6
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Look at https://sites.google.com/site/mikefocke2/what-side-is-bank-1
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Old 01-22-2017, 01:04 PM   #7
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Tim's original question asked about "all vehicles", so I didn't think he was just asking about our 986s. I have read and heard that bank one is the side that cylinder #1 is on and that cylinder #1 is the most forward (Forward being relative to the engine with output being at the back). I have read that there are exceptions, but I don't know of any. Was the term 'bank' even used before O2 sensors (fuel injection) was in use?



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Old 01-22-2017, 01:18 PM   #8
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Good points.
It can be difficult to see which is the most forward cylinder and therefore easy to mistake 1 &4.Not a good mistake sometimes!.
Hence my paint pen suggestion. Helpfully the cylinder numbers are cast onto the cranckcase but are difficult to locate/see. Bright green paint pen solves that !
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Old 01-23-2017, 09:18 AM   #9
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Sorry guys. I have a O2 sensor code on my F150. Bank 2 sensor 2.

There are sensors in the cats for each side but none downstream from that.

Here are the alternative facts....


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