I have a 1994 XJS 2+2 4.0 US specs Where is the fuel pump relay?
My drivers handbook states right rear in trunk above the wheel arch
There is only a Bracket there No Relays .
I have a problem with Hard stating when Hot and was going to check relay .

 

ohsix,

It should be in that location. I THINK it might be a silver relay (forgive me if my memory is failing me!)

However, if your relay is not working, the car will not start, so I'd be looking elsewhere for the problem. Is there any difference if you turn the ignition on, wait, turn off, turn ignition on, wait then start? If so, it implies that it's taking time to build up fuel pressure. That could indicate pump or fuel filter. When was the filter last changed? Hot starting problems can also be indicative of a crank position sensor starting to fail.

Good luck

Paul

 

The vehicle will start Hot if I turn key to start then back off and then to start
again. When cold its starts first try.

There are No relays in the trunk at the right side wheel arch Just a Bracket with two studs .
I could change out the Crankshaft sensor.
the vehicle has 53,000 miles I change the filter about 2,000 miles ago
runs well with plenty of power.

 

This might help
http://www.justanswer.com/jaguar/23n...ump-relay.html

 

I found the relay on the side of the support bracket on the right side that the lid strut attaches to .behind the long plate.