Good Morning,

On my 2003 S Type V8, the fuel gauge reads as empty although the tank is not empty. I bought the car that way, so it has always read on empty. I am working on fixing a few things over the last few days and this has been troubling me since I bought the car. Any thoughts on where to start would be greatly appreciated.

 

You could look at BOTH fuel level sensors with ETM.
Determine if one or both are faulty or if the INSTPK is the problem.

 

Thanks motorcarman...one question from a novice and I hate to trouble you....what is an ETM followed by what is an INSTPK?

 

Sorry for being so lazy...I opened the attachment as I should have before asking and I see Engineering Test Mode...
I will look through the attachments that you so graciously supplied and see what I can figure out. Thanks!

 

I finally got around to checking the ETM on my fuel gauge issue that I previously posted. I should preface this by saying that the car runs fine. I do not seem to have any issues except that the fuel gauge reads empty at all times. During the ETM, I tested the instrument gauges and the fuel gauge needle seems to be working as it sweeps from empty to full in routine fashion.

The following photos are what I received from the ETM:
















Any thoughts on this? I would really appreciate some help. Thanks.

 

Read up on ETM - later in the values are per side fuel levels.

 

Thanks but that is not much help to tell me to read up on ETM. I have no idea what the values mean nor how to interpret them. I am asking if somebody actually knows what the data means and what the next step might be. I guess that I could just take it to a Jaguar mechanic and let them fix it. I thought that the idea of this forum was to pass along our experiences, help each other out and share information for the benefit of all.

I am a physician. When I send someone for a test, I don't give them the printed page of results and tell them to read up on it. If they could interpret the tests, they wouldn't need a doctor.

 

You probably charge a fee...

Here you get a lot free but maybe have to do some leg work.

 

Thanks for the cheeky reply.

I belong to three forums, a medical forum, a gardening forum and this Jaguar forum. The Jaguar forum is the only one where some members tell you to "try the search feature" or to go read up on things instead of helping out when they can. In medical forums, there is a collegiality of people with similar interests to try to help others out. If we know something, we offer that information to our fellow forum members without admonishing them or belittling them in any way. As an expert in my field, I provide plenty of free information for the benefit of others. If people don't know a good answer, they don't respond at all. Snarky replies are not helpful or polite.

Interestingly, in the gardening forum of which I am definitely not an expert, the members go out of their way to offer information and advice on different tips. I guess there are just different types of people in my other spheres of interest.

BTW: If I am at a function of any kind; church, professional, personal or even sitting in a pub, when someone asks me my advice or opinion about something medical, I do not tell them to make an appointment at my office. I help them in any way that I can. It costs nothing to be kind and helpful.

Thanks to the forum members that get the idea of a forum and are happy to pass along their knowledge and experience. They are the ones that keep the forum alive.

 

Docmonte, that is a somewhat "testy" response. This forum does indeed have a certain flavor which is not found on the UK Jaguar Forum. I belong to both and enjoy both, This forum is at times plagued by new members who seem to require an inordinate amount of hand holding and would, no doubt, be only minimally satisfied if a forum member drove to their home and repaired their Jag - Gratis.

Motorcarman provided you with a set of technical pdf's from Jaguar, a portion of which I have posted below, While I am sure that you do not possess factory level diagnostics, there are test procedures that can be performed by the layman in Engineering Test Mode. Tests D-3&4 and E-1 come to mind.

As a physician, I am sure you would be hampered by a lack of proper diagnostic equipment, and it is so being the owner of a "modern" Jag. Every jag owner should possess a diagnostic code reader that is capable of reading both OBD-II Diagnostic Trouble Codes and proprietary Jaguar trouble codes. Buy one, you will need it sooner or later if you intend upon sorting your Jag yourself.

I really doubt that you would interpret an MRI or CT scan at a cocktail party, yet some people ask the equivalent of this here on the forum...

 

Thanks for the helpful advice. As for me, I was just trying to find out if it was something that I could manage for myself or if I was best off to take it to a Jaguar mechanic. Sadly, the JLR authorized service locations near me are hesitant to do much work on a 2003 Jaguar citing lack of knowledge, parts issues, etc. There have become less and less "Jaguar" mechanics out there and the one that I do know is so busy that it takes a couple of months to have him look at anything, especially when it is a small job. I don't mind to tinker around with the car (I was a full time carpenter before going to medical school) and I find it therapeutic to take on small DIY projects if I have a good chance to fix the problem without causing some other damage.

BTW: You would be surprised what people will ask you, regardless of the venue, when they know that you are a physician...

Lastly, do you mind to come over to fix my fuel gauge issue?

 

"Lastly, do you mind to come over to fix my fuel gauge issue? "

Being a California ex-pat, I try to avoid leaving Montana unless I really have to, so regretfully I am going to have to pass... That said, the downside of living in eastern Montana is that the closest Jaguar dealer is 500 miles and two States away!