Fuel gauge inoperative (I'll post the troubleshooting procedure shortly.)
Fuel senders are not reporting to the auxiliary control panel.
Removal of the fuel tank on a 2010 XK convertible is indicated.
The workshop manual:
XK/XKR Workshop (Service) Manual 5.0 (67 mB)
http://www.mediafire.com/file/mtxrfc...44939.pdf/file
addresses draining and calls for removal of the rear suspension assembly.
Not keen on removing the rear suspension.

The following steps are proposed after draining fuel and disconnecting wiring as indicated in the workshop manual:
1. Remove the muffler
2. Remove the brace/cover at mid exhaust pipe
3. Remove exhaust pipe (disconnect behind cat converters)
4. Remove heat shield from tank
5. Disconnect drive shaft at differential
6. Disconnect Fuel filler hose
7. Using long extension and socket, remove bolts holding straps and lower the tank.

Has anyone attempted the X150 fuel tank removal and how did you fare?

Best regards,
Bill

 

Before doing any of that I would do the following.
pour 3 bottles of techron in the tank and let it sit for a week.
You can also use CRC 1tank, which is the same thing only concentrated and cheaper- use 2 bottles.
Here is a thread where many have had success.

https://www.bobistheoilguy.com/forum...l-sending-unit

 

Thank you for the suggestion. Based on Jaguar Technical Bulletin JTB00301v2 the internal wiring harness is the most likely cause of failure. https://static.nhtsa.gov/odi/tsbs/2014/SB-10064326-6903.pdf
The critical question at this point is: can the tank be removed and replaced without removing the rear suspension assembly?
It appears that it can but access to the strap bolts will be difficult, especially for re-installation.

best regards,
Bill

 

[QUOTE=Bill400;2224393]
Removal of the fuel tank on a 2010 XK convertible is indicated.
The workshop manual:
XK/XKR Workshop (Service) Manual 5.0 (67 mB)
http://www.mediafire.com/file/mtxrfc...44939.pdf/file
addresses draining and calls for removal of the rear suspension assembly.
Not keen on removing the rear suspension.

Update:
Midway through the XK fuel tank R&R, the answer to the question: "Is removing the rear suspension required?" is, not exactly.
It would make sense for a fully equipped shop to remove the rear suspension. However, the fuel tank has been removed by lowering the front supports only of the rear suspension.
A new thread addressing fuel gauge troubleshooting (Part I) and R&R of the fuel tank (Part II) will be posted.

best regards,
Bill

 

[QUOTE=Bill400;2225598]Bill, You are a better man than I with regards to getting that tank out in and around the rear suspension! Given all of the fuel lines, evaporative connections and electrical runs connected to that tank at the rear of it, I chose to drop the rear suspension all the way down to make my life easy. Once you have the braces, exhaust and drive shaft out why not? Just a couple of minutes to drop the four main bolts holding it up. I replaced my fuel pump a bit ago and was pretty well amazed with the amount of work required to do so. I have a non Jaguar mechanic buddy of mine who suggested cutting out the rear floor pan a bit more to access the pump! Not a bad idea in retrospect, although I know it would be sacrilegious to most! LOL

 

@Bill400 did you ever post the threads on this? I have the same issue with the fuel gauge failing, intermittently just now but becoming more frequent. Interested to know if this can be done without having to drop the rear subframe.

 

A lot of cars have access thru the rear floor to get to the fuelpump/filter and gauge?
Would it be so bad to cut a hole, it would and save a lot of work?
Is it possible to do?

 

On most other cars I've had or known the fuel tank has been underneath the rear seats. I'm not certain but I presume the reason that Jaguar didn't do that here is either because the tank isn't directly under those seats, or possibly because they're not "flat" on the base - or both. I don't imagine it would be easy to cut the hole and get it in the right place first time, if it even is possible.

 

Hello 8bit,
The road to perdition is paved with good intentions.
Thank you for the reminder. Though I have posted on the subject, I have not yet provided the proposed documents.
I will endeavor to provide them.

You can easily assess the feasibility of under-seat fuel tank access by removing the right rear passenger seat (it just pulls up) and dis-lodging the three-inch diameter rubber wire pass-through grommet.

Lift grommet under right rear passenger seat for access to fuel talk electrical connector.

My assessment was that cutting is unlikely to provide satisfactory access due to the far right location of the bolted tank access cover.
More importantly, cutting such an access hole would be inconsistent with my repair philosophy and would seriously devalue the car.
I did use the under-seat cut to replace an X-Type fuel pump and regretted it.

The keys to a first time fuel tank replacement are patience, confidence and very secure vehicle support (a professional lift would help).
Review the fuel tank R&R procedure in the service manual and take your time. I managed by myself but assistance for muffler removal is highly recommended.

Next time I will lower the entire rear suspension as indicated in the service manual in order to replace the rear stabilizer bushings and provide proper clearance for fuel tank removal. Its not a big deal at that point.

Whether you do the repair or have the shop do it, replace the tank access cover/filter and the stabilizer bushings.
Order parts in advance:
1. Fuel tank access cover/fuel filter unit
2. Rear stabilizer bushings (2ea)

 

Good Day Bill,

Thank you so much for your directions. I was not going to try this but I figured that you were successful, I would give it a try. Attached are my notes and almost everything went well. (sort of) I have everything apart and I am getting ready to put everything back.

My reason for doing this was that I was having issues with California smog testing. My secondary air injection was not resetting but the system was working well. I was also having an issue with the gas gauge not reading correctly. In following the Jaguar Service Manual, the diagnostics for the gas gauge pointed to the fuel level sensor in the tank. After opening up the tank, I found that my tank is wired differently than the service manual. After doing a little more research, I found that it is wired like the Jaguar Electrical Guide.

I hope that this might be useful for others,

Cheers!