1999 XJ8 Misfires
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08-01-2018, 01:43 PM
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1999 XJ8 Misfires
I have a 99 XJ8 and I’m sorry if this has already been addressed. The car died and it took me 4 days of cranking to get it started and is now running rough, before the no start I was replacing coils once a month. I’ve been searching the forum and found some answers but none that have solved the issue. I have several codes and fuel pressure is around 33-35 psi. The TB has been replaced with a rebuilt, other than that I have checked for cracks in the part load and other tubes I am not sure what else to do. Help.
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08-01-2018, 05:29 PM
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Highhorse (08-01-2018)
#3
08-01-2018, 05:31 PM
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First off, fuel pressure should be in the 40's. I've had my car for 15 yrs and never replaced a coil pack (all 8 original), it sounds like you have a short, thus the misfire on cylinder 8 and your sequence of codes.
For P1314... https://www.autocodes.com/p1314_jaguar.html
For P1316.... https://www.autocodes.com/p1316_jaguar.html
For P1647.... https://www.autocodes.com/p1647_jaguar.html
You'll notice for each instance a commonality of ignition components. You'll have to review them and discover the issue via tracing and testing your wiring.
Here's a thread on O2 replacement... https://www.jaguarforums.com/forum/xj-xj8-xjr-x308-27/o2-sensor-replacement-195018/
When doing a search for your P**** codes, always put Jaguar in front so it can specifically give you better results.
For P1314... https://www.autocodes.com/p1314_jaguar.html
For P1316.... https://www.autocodes.com/p1316_jaguar.html
For P1647.... https://www.autocodes.com/p1647_jaguar.html
You'll notice for each instance a commonality of ignition components. You'll have to review them and discover the issue via tracing and testing your wiring.
Here's a thread on O2 replacement... https://www.jaguarforums.com/forum/xj-xj8-xjr-x308-27/o2-sensor-replacement-195018/
When doing a search for your P**** codes, always put Jaguar in front so it can specifically give you better results.
Last edited by Highhorse; 08-01-2018 at 05:33 PM.
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