Hey guys I have a 2005 Jaguar XJ8 SuperV8 with 107k miles throwing the following codes...
P1111
P1314
P0300
P0304
P0306
P0308
P0171
When you step on it I hear hear a clicking and it doesn't want to go faster. Also have vibration in steering wheel while driving. Any advice is greatly appreciated

 

Welcome to the forum w3ab1ak91,

I've moved your question from General Tech Help to X350 forum. Members here with the same model will be able to help.

Graham

 

Hi w3ab1ak91,

Welcome to the Jaguar Forums!

That's quite a list of codes - you can use the forum search function to search for existing information about each code to see if other members have found solutions. The "P" Diagnostic Fault Codes (DTCs) are defined in the Powertrain section of the X350 Workshop Manual, which you can download in six sections at the links below:

http://www.mediafire.com/download/md...f+contents.pdf http://www.mediafire.com/download/aa...nformation.pdf
http://www.mediafire.com/download/n3...2.+Chassis.pdf
http://www.mediafire.com/download/9b...Powertrain.pdf
http://www.mediafire.com/download/0i...Electrical.pdf
http://www.mediafire.com/download/4j...+and+Paint.pdf

The 2005 X350 Electrical Guide can be downloaded here:

http://www.jagrepair.com/images/Elec...al%20Guide.pdf


You can search these pdf documents by using the Adobe Acrobat Reader search function (hold CNTRL or CMD and press the F key, then enter your diagnostic code in the search window and click NEXT to scan through all occurrences of that code in the manual).

You can ignore the P1111 code because it simply means the system has completed all its Onboard Diagnostics self-tests.

The P1314 and P0300-8 codes all indicate that engine misfires have been detected in certain cylinders, in your case, cylinders 4, 6 and 8. P1314 indicates that at least one of the misfires was severe enough to damage a catalytic converter.

P0171 is a very common code indicating that the right hand cylinder bank is running too lean, often from an air leak in the intake plumbing that is allowing unmetered air to enter the engine somewhere between the Mass Airflow Sensor (MAFS) and the cylinder head.

Hopefully some knowledgeable members will chime in to offer suggestions for resolving these codes.

In the meantime, please visit the New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum and post an introduction to tell us something about yourself and your Jaguar.

Cheers,

Don

 

It's hard to diagnose just based on a list of codes, but it looks like you have an intake system leak (or defective MAF), or mechanical issues on bank 2 (driver's side of engine) severe enough to cause misfires. This is something you want to fix ASAP or risk damaging the catalysts. The P0171 is lean on bank 1, but I suspect it will eventually also log a P0174, unless there's mechanical issues on that bank. It's possible, but unlikely, that 3 coils are bad, but you can get lean codes from a misfire.

If you don't have anyway of analyzing the fuel trims, you need to take this to someone who can accurately diagnose it.