Fuel Gauage and a Story
#1
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Only had my car a few days (driven <100 miles) when I got caught by this.
So, I am 20 miles from home. The car starts to die. Narrow two-lane road. Car behind. The rear wheels chirp! I coast to the side of the road, luckily finding a turn on section at a road junction. Engine stalled light on. Restarts badly and briefly. Hazards on.
I am THAT guy.
I had noticed the fuel gauge was not going down. But didn't think about that enough! I call my wife to bring out a can of 93 gas. Meanwhile I read up on my phone and convince myself that the engine has blown and I have a wreck to explain to my wife. I was almost literally shaking when she arrived. So, I stand in the road, dodging cars and trucks as I fuel the car. Started up fine!
A few minutes later I filled up at a gas station to the pump's click (taking out an extra mortgage to do so). And it has been fine since.
I noticed that the fuel gauge did not go to full.
Presumably the fuel tank sender unit (float) has broken?
I have read that this is a pig to replace. Tank out, etc.
Any advice?
I can sort of live with it, but I am a bit of a freak for details. A faulty gauge reading might eventually put me in an asylum!
So, I am 20 miles from home. The car starts to die. Narrow two-lane road. Car behind. The rear wheels chirp! I coast to the side of the road, luckily finding a turn on section at a road junction. Engine stalled light on. Restarts badly and briefly. Hazards on.
I am THAT guy.
I had noticed the fuel gauge was not going down. But didn't think about that enough! I call my wife to bring out a can of 93 gas. Meanwhile I read up on my phone and convince myself that the engine has blown and I have a wreck to explain to my wife. I was almost literally shaking when she arrived. So, I stand in the road, dodging cars and trucks as I fuel the car. Started up fine!
A few minutes later I filled up at a gas station to the pump's click (taking out an extra mortgage to do so). And it has been fine since.
I noticed that the fuel gauge did not go to full.
Presumably the fuel tank sender unit (float) has broken?
I have read that this is a pig to replace. Tank out, etc.
Any advice?
I can sort of live with it, but I am a bit of a freak for details. A faulty gauge reading might eventually put me in an asylum!
Last edited by XK8FAN; 08-07-2024 at 01:17 AM.
#2
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The pump can is a bear to change. But the level sender isn't so bad. Unlike a lot of fuel pumps where it's integrated into the pump, on the Jag it's mounted on the "back" of the tank, as it were. If you remove the trunk lining and remove the metal plate covering the tank you'll see a round thing. That's the sending unit. You can unplug the wires, unscrew it and pull it out. Replacement is the reverse. Be sure to do this with less than about 1/4 tank of gas.
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XK8FAN (08-07-2024)
#3
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The pump can is a bear to change. But the level sender isn't so bad. Unlike a lot of fuel pumps where it's integrated into the pump, on the Jag it's mounted on the "back" of the tank, as it were. If you remove the trunk lining and remove the metal plate covering the tank you'll see a round thing. That's the sending unit. You can unplug the wires, unscrew it and pull it out. Replacement is the reverse. Be sure to do this with less than about 1/4 tank of gas.
I love this forum. So much knowledge.
#4
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On your turn signal knob there is a button and you can click through your average gas mileage, ect...until you reach how many miles to empty. That will give you an idea of how much gas you have in your tank. Currently my float is having issues (as well as the dash gauge) and is showing I have 150% of a tank. It only goes wonky once in a while. The miles to empty has been a reliable way of measuring for the time being.
#5
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On your turn signal knob there is a button and you can click through your average gas mileage, ect...until you reach how many miles to empty. That will give you an idea of how much gas you have in your tank. Currently my float is having issues (as well as the dash gauge) and is showing I have 150% of a tank. It only goes wonky once in a while. The miles to empty has been a reliable way of measuring for the time being.
#6
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I have the issue where my tank will only read until 3/4 full even with a fresh new tank. Reads all the way to the bottom with no issue which is nice, but bothers me that it never shows full
You're lucky, on the XK8 you can replace the sending unit easily from inside the trunk. On my XKR I believe it is integrated into the pump assembly so I'll be waiting until a fuel pump fails before I address the sending unit unfortunately. Best of luck getting it swapped.
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