Hi folks, 1995 X300 VDP. Had the car for 17 years, and it has been our summer weekend driver. yesterday I went for gas, with the gauge indicating 3/8, which was what I expected. After filling the tank, the gauge has now dropped to empty, and stays there after the engine has been shut off several times. The low fuel light is also lit.
Can the problem be anything else besides the sending unit? And how accessible is it?
Than ks
Mike
Jaguar issued a TSB back when I worked at the dealer.
05-1-13 Incorrect Fuel Gauge Reading.pdf (106.9 KB)
Drive the car until you think the fuel level is below 1/4 tank and remove the sending unit for diagnosis?
Easy job… buy new sender for $60 -$80 on Ebay carefully remove the ring holding the sender if gas runs out put it back on and drive for another day
Thanks for the response.
Mike
Be careful when removing the sender, or more importantly, the retaining ring for the tank cover in order to access same. IIRC, Jag advised using only brass punches (and hammer) to dislodge the ring, to avoid creating a spark that might set off the fuel (or vapors) inside the tank. 
I remember when I had to do the deed on Supercat, back in the day, and having to go to Northern Tool & Supply to buy their “matched set”. Set me back a few $$ back then, and really have had no other use for those tools ever since then. 
Fuel to air ratio must be very precise to ignite. I wouldn’t worry about the brass tools. I’ve gotten in and out of my tank too many times to count at this point. Regular hammer, regular chisel…I’m still here and no signs of sparks, fires, etc.
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I just finished reading the TSB. My '03 X308 VDP is billed in literature as having a larger fuel tank than the X300. 23.3 vs 21.1 for the x300. I have one heck of a time putting more than 18 gallons in the 308 once the low fuel light is on and I’ve gotten to a station, perhaps 19 as the needle reaches closer to the peg.
I’ve asked elsewhere if there were any chance my 308 – about 1,000 units off the end of production – could have gotten a European-spec tank. The answer has been generally, nah, probably not a chance. But I’m wondering given my experience if maybe there was an odd X300 tank sitting around in the storehouse they wanted to get rid of. It even raises the prospect the old NA tank became the new European tank with the changeover to the V8 production.
It’s probably one of those rhetorical questions that even getting a build sheet would not resolve, but it does make me ponder. A difference of 2 gallons is about 50 miles at well-behaved highway speeds. Not a big deal, but then my X350VDP could go darn near 600 miles with AC off and driven gently on the road. The 308 will get roughly 450-475 under roughly similar circumstances.
Yep. I’d probably have to take a bio-break anyway, but it bugs me!
Cheers to all.
Eliot