Wich one is it? I read conflicting info. Is it on the drivers side(US)?

 

I thought it was in the XK8 FAQ sticky but apparently not. Here it is straight out of JTIS.

 

Which does nothing for showing cylinder 7 on a MY 97 v8. It is, in fact, the cylinder shown as 2-3 on pre MY2002.5

 

We just answered this question a few days ago.

Let me offer some clarity around engine bay and/or bank orientation. To discern left side from right side on any engine in any car just sit in the driver's seat (either LHD or RHD). Now the left side of the engine bay is the left side and the right side of the engine bay is the right side.

Just don't measure left to right standing at the grille...on any car.

With that, on an AJV8 in your MY Bank 1 is the right bank, bank 2 is the left bank. Again, #7 is bank 2 cyl #3. See if you can do it now...
1. Sit in the driver's seat with the hood opened.
2. Look at the left bank.
3. Start counting cylinders from the front of the engine going back to the firewall.
3. Count 1...2...3...Stop....you've arrived at #7.

 

Steve:
You are absolutely right, BUT the problem is that the Jaguar documentation does not show the numbers the way you described. You have the OBD cylinders eactly right, of course, but the key is to number the second bank with numbers 4 thru 8 instead of bank 2, 1 thru 4.
So, it should be easy, but the picture that is repeatedly posted does nothing but cause confusion. Maybe it would be best to quit posting the picture.

 

Yeah Ross, I know about the pic without even clicking on it. Jaguar doesn't help itself with convoluted documentation nor by updating the cylinder IDs to a universal numbering in 03. That is why I tried to make a simple step process, and forget the pics.

In my original answer to the same OP a few days ago, that is why I asked for the source of his pursuit of cylinder #7. If he received any data from the car itself, the ECM on a pre-MY 2003 is going to show any P-xx07 codes pointing to left bank, third cylinder. Post 03, of course, the ecm now points to right bank 4th cyl for P-xx07 codes. The hard part for the DIYer is knowing when that switch occurs and what chart to read, and why I don't point to the charts unless I match the chart key with the Jaguar OBD code chart, which is where the 2-3 is IDed with any P-xx07s.

 

Tom, the bank and cylinder IDs are in the FAQ, but within the Specifications Document.

Guys, is this correct? I'd like to have something visual to be able to post and have no confusion. I'll pretty it up and fix the firing order cylinder references after getting the correct info on it.

 

Steve: Is this chart correct for all year P Codes?




Or This?

 

No on the left side document you've left a key code on the bottom that no longer applies or matches the picture or the Jaguar OBD charts. The lefts and rights are unnecessary and might add confusion because the FRONT of the engine is identified. To me, it is far easier to just set the rule SIT IN THE DRIVER'S SEAT. Left and right are obvious.

The OBD codes (Jaguar, that is) are correct if you're using the right MY range chart, AND you are reading codes produced directly by that car's ECM. If you read a cylinder P code on an 04 XK8 and used the OBD chart for the 2000MY, for example, you'd end up troubleshooting the wrong cylinder...and vice versa, with the exception of one cylinder, that is....#1

 

Steve: Is this correct?

 

Yes, the cylinders you have marked in red on this last posting are accurate for the right MYs.

Just keep in mind, the directions in the OBD charts are going to say something like P0307 Misfire ........Cylinder # B3 - B = Bank B or bank 2; cylinder #3. My concern is - it will work for you because you've created it. It will be terribly confusing for any newcomer because there are numerous codes and double names for everything.

To me, it is still easier to write a simple instruction, then the diagrams work as originally written:

1. USE THE CORRECT MY OBD CHART
2. Use the correct engine numbering chart (split on the 2002.5 MY)
3. Use the cylinder key on the OBD chart.
4. Match that key to find the correct cylinder on the diagram for the correct MY
5. Bank A = Bank 1; Bank B = Bank 2

It gets easier in MY03, less coding and confusion. a P0307 is the 4th (last, back) cylinder on bank 1; a P0306 is the 3rd cylinder on bank 2.

 

Thanks for the clarification. I have modified my chart as follows. I think it's clear: