On my 2002 XK8, when the fuel level drops below 3/4 full the gauge goes to empty and the reserve light comes on. I understand that this circuit is analog so it should be relatively easy to ring out. My problem is that I don't have the least idea where to start. Any help would be deeply appreciated!

 

If it always happens at the same gas level and its not intermittent otherwise the problem will likely be a bad sending unit.


Dave

 

Thanks Dave! Yes, it happens at the same point. Now, how do I replace the sending unit? Thanks in advance!

 

I haven't done this repair but the JTIS indicates:
The sender unit for the fuel gauge is fitted into the back of the fuel tank and can be serviced without removing the tank. The fuel tank must be drained before removing the fuel gauge sender unit.
You disconnect battery! Drain Tank, pull wires, then they show a keyed tool (see Pic) to remove. Remember new seal with new sender.
Someone who's done it will be along I'll bet and fill in any blanks and perhaps explain how to remove it without the 'tool'

 

Hello, yes sender is in gas tank.

I would also suggest checking both fuel pumps to make sure they are both working, if not replace at same time.
Many times only one fuel pump working.

Much better power with 2 fuel pumps working when flooring throttle (passing) and at highway or high speeds.

Check by removing relays in trunk by spare tire (box with fuses and relays in front to the right). Sorry do not know exactly which relays, suggest googling fuel pump and fuel pump relays. it's a pretty easy check.

Good Luck and
Remember Happy Motoring...

 

I think the design changed roughly around 2000 and the sender is not accessible without fuel tank removal on a 2002. That tool is only for the early models.

 

Thanks Steve, I had the wrong year selected when I viewed it.

 

Thanks Guys! It looks like I've got my work clocked out for me. Should be fun!

 

Actually, I just noticed you had a coupe not a convertible. You should be able to access the pump/sender assembly from the subwoofer opening behind the rear seats without removing the tank.

 

I see you have a Volvo PV444... I had one as a daily driver back in the '80's when I lived in AZ...




Dave

 

This is a procedure for my 99 look at the photos and see if your float is in the same area if not it is inside the tank.

Link JagRepair.com - Jaguar Repair Information Resource

 

Gus: is it necessary to completely drain the tank or just get the fuel level below the sender unit? It looks like the sender is near the top of the tank.

thanx

bob

 

There are TWO different tanks depending on MY.
Please put MAKE, MODEL, YEAR so we know the tank you are asking about.

One had the sender in the rear of the tank, the other is mounted to the fuel pump mount area.(access though EVAP flange)

 

Mine is a 1997 XK8 convertible. The sending unit is mounted in the rear of the tank and is accessible from the trunk.

 

1/4 tank or less should get the level low enough.

 

That’s what I hoped. Thanx for the reply