New x308 XJR Project
#1
New x308 XJR Project
Good evening x308 community,
I am a new member here and would like introduce myself and my newest project. So, I am a college student majoring in Mechanical Engineering with a minor in Journalism with a strong passion for cars and motorsports. I have had previous projects that are both domestic (U.S.) and euro that have taught me a lot and I am confident in my mechanical skills. I recently acquired a 99 Jaguar XJR x308 that is one of my bucket-list cars, by chance and wanted to do something different and fun.
In a nutshell, I plan on documenting (videos, pictures, text) my entire process from start to finish and uploading them to YouTube. There are some videos out there on diagnosing and fixing issues, but they're pretty scarce. So, not only is my goal to help others out there, but hopefully the execution of my plan will result in an helpful, informational, and eye-catching cinematic video. So, with all that being said...on to the project!
Details: 1999 Jaguar XJR 96,600 miles, 3 previous owners. It had been sitting for 2 years and the previous owner never got around to finishing the problems.
The problems this Jag has are the following:
1.) Restricted Performance
2.) Stability Control Failure
3.) ABS failure
4.) P0333 (knock sensor)
5.) Cam/Valve cover gaskets
6.) Spark Plugs
7.) Brakes (Rotors + Pads)
8.) Tires (Full set currently on car getting tires are XK8 Double Fives. + 2 original Penta rims)
9.) Misc suspension maintenance (I.e ball joints, tie rod ends, etc.)
Overall, I am looking forward to those who will join me along my journey and watch the transformation of my newest project, and excited to give this Jag the little bit of lovin' she needs to be a great car. I would like to post a more detailed run down of my work days here to be active in the community, and I do also plan on blogging my work days on my portfolio website in a more shorter and digestible format (will either link my website after project is complete or soon, will link my YT videos once they are complete). I appreciate any support and am open to constructive criticism from the community, and look forward to hearing from you guys.
Thanks,
PhilDango
I am a new member here and would like introduce myself and my newest project. So, I am a college student majoring in Mechanical Engineering with a minor in Journalism with a strong passion for cars and motorsports. I have had previous projects that are both domestic (U.S.) and euro that have taught me a lot and I am confident in my mechanical skills. I recently acquired a 99 Jaguar XJR x308 that is one of my bucket-list cars, by chance and wanted to do something different and fun.
In a nutshell, I plan on documenting (videos, pictures, text) my entire process from start to finish and uploading them to YouTube. There are some videos out there on diagnosing and fixing issues, but they're pretty scarce. So, not only is my goal to help others out there, but hopefully the execution of my plan will result in an helpful, informational, and eye-catching cinematic video. So, with all that being said...on to the project!
Details: 1999 Jaguar XJR 96,600 miles, 3 previous owners. It had been sitting for 2 years and the previous owner never got around to finishing the problems.
The problems this Jag has are the following:
1.) Restricted Performance
2.) Stability Control Failure
3.) ABS failure
4.) P0333 (knock sensor)
5.) Cam/Valve cover gaskets
6.) Spark Plugs
7.) Brakes (Rotors + Pads)
8.) Tires (Full set currently on car getting tires are XK8 Double Fives. + 2 original Penta rims)
9.) Misc suspension maintenance (I.e ball joints, tie rod ends, etc.)
Overall, I am looking forward to those who will join me along my journey and watch the transformation of my newest project, and excited to give this Jag the little bit of lovin' she needs to be a great car. I would like to post a more detailed run down of my work days here to be active in the community, and I do also plan on blogging my work days on my portfolio website in a more shorter and digestible format (will either link my website after project is complete or soon, will link my YT videos once they are complete). I appreciate any support and am open to constructive criticism from the community, and look forward to hearing from you guys.
Thanks,
PhilDango
The following 2 users liked this post by PhilDango:
alistairolsen (03-18-2021),
Highhorse (03-20-2021)
#2
#3
Welcome aboard! You should be able to find answers to most issues here and most of the tasks you listed shouldn't be too difficult for someone with your experience. However if you aren't overly familiar with X308 Jaguars here a few tips to help you pinpoint the issue.
1.) Restricted Performance - This one is the most varied but could be related to your knock sensor. I've run into this quite a few times and usually its related to leaks in the intake, breather hoses or MAF sensor malfunction. I would start by making sure the throttle body is clean and all electrical connectors are secure and the pins are clean. Also make sure the intake tube is clean and sealed. Clean the MAF and also make sure the electrical connector and pins are clean. Ensure the part load and full load breather hoses are clear and intact. The part load tends to develop carbon buildup where it connects to the valve cover. Finally make sure the seals between the supercharger and intake plate as well the intake plate and intercoolers are intact.
2.) Stability Control Failure - Most often this is caused by solders breaking at the power pins in the ABS module. If you have skill in this you can try cracking it open yourself and soldering the broken connections. You can also mail it off to be repaired. Also check the ABS sensor at each wheel making sure it is clean and intact. This is also a common failure and probably a good starting point. Check the ABS electrical connectors at each wheel to make sure they are clean and the wire isn't broken. More rare is the ABS pump itself failing.
3.) ABS failure - Usually caused by the same issues causing Stability Control failure.
4.) P0333 (knock sensor) - Check the wires first. On the SC models I'm afraid you will have to remove the supercharger to access (P0333 is bank 2 failure, top of engine, left side under the supercharger.) Luckily it isn't expensive to replace and I believe a Lincoln LS V8 knock sensor will work and is cheaper.
Hope this helps and good luck!
1.) Restricted Performance - This one is the most varied but could be related to your knock sensor. I've run into this quite a few times and usually its related to leaks in the intake, breather hoses or MAF sensor malfunction. I would start by making sure the throttle body is clean and all electrical connectors are secure and the pins are clean. Also make sure the intake tube is clean and sealed. Clean the MAF and also make sure the electrical connector and pins are clean. Ensure the part load and full load breather hoses are clear and intact. The part load tends to develop carbon buildup where it connects to the valve cover. Finally make sure the seals between the supercharger and intake plate as well the intake plate and intercoolers are intact.
2.) Stability Control Failure - Most often this is caused by solders breaking at the power pins in the ABS module. If you have skill in this you can try cracking it open yourself and soldering the broken connections. You can also mail it off to be repaired. Also check the ABS sensor at each wheel making sure it is clean and intact. This is also a common failure and probably a good starting point. Check the ABS electrical connectors at each wheel to make sure they are clean and the wire isn't broken. More rare is the ABS pump itself failing.
3.) ABS failure - Usually caused by the same issues causing Stability Control failure.
4.) P0333 (knock sensor) - Check the wires first. On the SC models I'm afraid you will have to remove the supercharger to access (P0333 is bank 2 failure, top of engine, left side under the supercharger.) Luckily it isn't expensive to replace and I believe a Lincoln LS V8 knock sensor will work and is cheaper.
Hope this helps and good luck!
Last edited by anduha; 03-18-2021 at 01:52 AM.
#4
Anduha,
I believe the ABS pump itself was replaced (per previous owner), but not the module. So I planned on doing a brake job with new pads and rotors, cleaning the rings + sensors, and clearing the codes to see if they would come back during the break in process for the new brakes. Also.....I know the procedure of driving the car in reverse while pumping the brakes could "reset" the ABS control module is true for older cars, but I don't think applies to the Jag. Confirmation would be nice, or I can just give it a shot.
I believe the ABS pump itself was replaced (per previous owner), but not the module. So I planned on doing a brake job with new pads and rotors, cleaning the rings + sensors, and clearing the codes to see if they would come back during the break in process for the new brakes. Also.....I know the procedure of driving the car in reverse while pumping the brakes could "reset" the ABS control module is true for older cars, but I don't think applies to the Jag. Confirmation would be nice, or I can just give it a shot.
#5
Unfortunately the issue isn't a malfunction of the ABS module but a physical failure of the solders inside the module. You can try the reverse trick but it most likely won't solve the issue. I would check the wheel sensors first for obvious damage while doing the brake job as you mentioned and if that doesn't solve it then move to the module. A failed module won't affect overall drivability unless you are driving hard in inclement weather.
Last edited by anduha; 03-19-2021 at 01:15 AM.
#6
Phil,
If you decide to repair the ABS module it is an easy fix.......... it would have been a lot easier if Jaguar had mounted the ABS unit 1/4" higher, and routed the brake lines just 1/4" further way, but even with these obstacles it was still pretty easy.
You just need to remove the two E30 torx screws holding the wiper relay bracket and move it out of the way. Remove the two 10mm nuts holding ground wires, and move the wiring out of the way. The ABS unit has a little flexibility in it and if you bend it back slightly you can access and withdraw the 4 E-5 torx bolts holding the Module.to the ABS unit. You need to pull the sliding latch holding the multi-pin connector to the module, and move it out of the way. Then squeeze and wiggle the 2-pin power connector to the module and also move it out of the way. Now all you have to do is bend the brake lines a little and the module will slide out.
There are tutorials on the internet showing how to cut your way into the unit to repair the solder joints, and others showing how to cut a window into the unit to do repairs, but I opted to send mine to a specialist shop for repair and testing https://www.shop.modulerepairpro.com...2001_c1140.htm (Van Nuys CA) ($99 plus $15 return shipping) It is a speedy service, you know the unit is fixed because it has been pre-tested and comes with a full lifetime warranty.
Minimal tools are needed.
If you decide to repair the ABS module it is an easy fix.......... it would have been a lot easier if Jaguar had mounted the ABS unit 1/4" higher, and routed the brake lines just 1/4" further way, but even with these obstacles it was still pretty easy.
You just need to remove the two E30 torx screws holding the wiper relay bracket and move it out of the way. Remove the two 10mm nuts holding ground wires, and move the wiring out of the way. The ABS unit has a little flexibility in it and if you bend it back slightly you can access and withdraw the 4 E-5 torx bolts holding the Module.to the ABS unit. You need to pull the sliding latch holding the multi-pin connector to the module, and move it out of the way. Then squeeze and wiggle the 2-pin power connector to the module and also move it out of the way. Now all you have to do is bend the brake lines a little and the module will slide out.
There are tutorials on the internet showing how to cut your way into the unit to repair the solder joints, and others showing how to cut a window into the unit to do repairs, but I opted to send mine to a specialist shop for repair and testing https://www.shop.modulerepairpro.com...2001_c1140.htm (Van Nuys CA) ($99 plus $15 return shipping) It is a speedy service, you know the unit is fixed because it has been pre-tested and comes with a full lifetime warranty.
Minimal tools are needed.
#7
Carnival Kid,
Thank you for the detailed write up and pictures of the ABS module. This will come in handy for sure and will help me get her on the road quicker. I appreciate the input from you and Anduha here, and this forum website seems to be more active in responses than the other Jag forum I also posted this in. As of right now, I'm pretty much just stocking up on parts and holding off on starting the project once my semester is done. Parts that i still need to order are spark plugs, driver front fender well, cupholder, rear view mirror, and some other gaskets I'm prettty sure. Basically I'm debating between going 2 routes with this project:
1.) Mechanically great with some go fast bits, powder coating, a bit of engine dress-up and ease of mind knowing what's been replaced (removing the supercharger to correctly replace knock sensor), but the exterior will still have the "aged patina" look from the faded clear coat.
2.) Replace parts that affect drivability of the car, quick fix of relocating knock sensor, and a fresh repaint of the car. (basically spreading out budget over entire car instead of focusing on one system).
So, soon enough I'll be able to give a more detailed update on which route I'm going with, but I'm open to input and ideas which are welcomed.
-Phildango
Thank you for the detailed write up and pictures of the ABS module. This will come in handy for sure and will help me get her on the road quicker. I appreciate the input from you and Anduha here, and this forum website seems to be more active in responses than the other Jag forum I also posted this in. As of right now, I'm pretty much just stocking up on parts and holding off on starting the project once my semester is done. Parts that i still need to order are spark plugs, driver front fender well, cupholder, rear view mirror, and some other gaskets I'm prettty sure. Basically I'm debating between going 2 routes with this project:
1.) Mechanically great with some go fast bits, powder coating, a bit of engine dress-up and ease of mind knowing what's been replaced (removing the supercharger to correctly replace knock sensor), but the exterior will still have the "aged patina" look from the faded clear coat.
2.) Replace parts that affect drivability of the car, quick fix of relocating knock sensor, and a fresh repaint of the car. (basically spreading out budget over entire car instead of focusing on one system).
So, soon enough I'll be able to give a more detailed update on which route I'm going with, but I'm open to input and ideas which are welcomed.
-Phildango
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