Hi everyone, I just picked up an 01 XKR. The car only has 70K miles on it but has a few issues. Basically every light is on check engine, abs, reduced performance, trans fault. and so on. Keep in mind I have not owned this car for 24 hours yet so I am just getting started here.
I am fairly confident most of the issues will be fairly simple and may be related in some way. Advice is welcome!
I am thinking brake light switch may be an issue. Also car is running rough probably needs coil packs, haven't pulled codes yet.
1) What is a good OBD scanner for this model ? Going to try a hard reset and look for any poor wiring connections. Since the car was rarely driven I suspect some corroded connections.
Let me know what you guys think.....

 

The initial suspect is always the battery. These vehicles require top-notch, fully-charged batteries in order to function properly. Once the battery starts to fade, all sorts of spurious warning lights and codes are thrown....

 

Before you start tearing into things - CHECK the battery!!!!!! A failing battery will light the dash up like it's Christmas. See if there is a date sticker on it or have the battery/electrical system check at your local Advance Auto or Autozone.

 

I will check the battery. The car starts right up but I understand that this may not prove a good battery.

 

The way I found her !

 

Once you have a good battery, get a nice float charger if you don't use the car regularly. I have a Jaguar CTEK one in my 07 XKR, a CTEK (non-Jaguar) in my BMW X3, a Deltran one in my 00 XKR and a Deltran one in my 98 XJR. They all work well and I have no complaints. You can get nice ones with good features for $40-60 on Amazon. I like to integrate them nicely in the trunks under the floor on all of my stuff and just have a little pigtail pop up. Then I have microfiber towels (big long ones like 3 feet long) that I have cut up, and sewn into little extension cable cozies that make it so I don't have the cord beating up my rear bumpers. I have Deltran battery tenders on my bikes too; and they work as well; with similar cozies lol.

I had all sorts of weird crap happen on my 00 XKR when I dinked around with crap batteries; like NAPA Gold, Duracell, etc. I ended up just getting what I should have to begin with; an Interstate Megatron II. I have interstate in all of my other stuff and never had a single problem. There are other good batteries too, but it's one of the few times I recommend a specific brand due to quality, warranty and the company standing behind the product if there is a concern (had only one be bad in maybe 40-50 car batteries; I put them in customer cars too; I do side auto work).

 

If you don't have proof that at least the secondary tensioners have been changed I wouldn't even start the car again until you have taken the cam covers off to check.

Running rough could be timing chain issues, so I would check that as a priority before anything else.

The definitive thread is here:-

https://www.jaguarforums.com/forum/xk8-xkr-x100-17/experience-pics-replacing-upper-cam-chain-tensioners-2-post-pics-how-52653/

 

While you're checking the cam tensioners inspect the air inlet pipe for breaks in the accordion section.

 

I will check this but I wouldn’t suspect this to be the issue with 70k miles.

 

I really don't think mileage has much to do with these failures - it was a design fault.

 

+1. My 2000 XKR with 67k miles in 2011 had them right ready to fail with lengthy cracks on the secondary tensioner bodies. My 98 XJR with 84k miles in 2015 had them look immaculate. It's a trash design.

 

Wrightbenz,

Congrats on your X100. Pic looks good and isn’t the side profile, of your new car, just beautiful! You sound handy with the wrenches so this car is lucky to have found you.

+1 on the recommendations above for checking/replacing the battery. Don’t neglect the battery cables too. Make sure both ends are clean, shiny and tight esp. at the positive high power junction box. I eventually replaced both cables with upgraded copper ones. Engine earth cable too may need an inspection. Everyone is right to check the Jag battery but also the body earth connections need inspection too.

For the OBD scanner tool, check the recent thread below for ideas what to get.
https://www.jaguarforums.com/forum/x...canner-216334/

Totally agree that the tensioners should be checked ASAP as if that goes wrong it’s an engine killer. Other things to look for are
1. Front suspension (it’s en vogue at the moment - probably due to age of the car)
2. Coolant leaks from blistered pipework
3. Air/vacuum leaks esp. at air intake tunnel accordion section plus cam cover PCV breather pipes

I wish you luck and good driving with your new car. If you have specific problems, start new threads on each individual problems, so us Forum members, with experience of that problem, can help. Scatter gun threads have less luck.

 

Yeah there is one local to me now that is on CL due to locked up engine with 62K miles. Mileage is irrelevant. I would not even start a 4.0L with an unknown tensioner state.

 

Noted guys I will pull the covers. I would assume nothing has been done under there.

 

Where is local to you ? I would like to see that add

 

Thanks for all the great info. I haven't had much time but I looked a the battery last night and it looks relatively new, but it appears to be bulging on the ends to me which may be a bad sign. Oddly though the car starts fine battery does not feel weak at all. I gather this does not matter with these cars though by the way everyone jumped on the battery as number one suspect.

 

Failing batteries are often able to start the engine. The problem is that they cannot hold enough of a charge to run all of the modules properly, and that is when they begin throwing spurious warning messages and codes. Keep in mind that modern vehicles are essentially rolling computers....

 

https://tampa.craigslist.org/psc/cto...954660109.html

 

Bulging battery does not give me a warm and fuzzy.

When you replace the battery, do a hard reset (search for procedure).

 

No I doubt it’s a good sign. I pulled the codes today. Had multiple misfires. I had already ordered new coil packs and plugs so I strayed pulling the coils and this is what I found. Lots of oil leaking down into the spark plug holes. I wasn’t totally surprised by this. At any rate this and the battery are going to account for many of my issues.
Now I will pull the valve covers replace the upper trimming chain tensioners and reseal the covers.