My XJ6 was running perfectly then suddenly stalled....It wont start again. Not an issue with the battery and starter. (Both are new) Starter rotates the engine normally.
No check engine light (yet) Lots of fuel...

Any thoughts?

 

The # 1 fuel pump relay will click in your fingers 3 times on for 3 seconds - off- on in the starting sequence

You will only have # 1 fuel pump as # 2 is for supercharged and V - 12

There are 2 other relays to place your finger on with relay swapping options

Small relay # 9 right engine fuse box ( ignition positive relay as 1st power for the ECU )

Large relay # right 5 called the ECU controlled relay ( this is your 2nd power to the ECU needed at all times )

By rotating the key but not having starter rotation the fuel pump relay will click only twice , on - off , the 3rd click comes from the CKPS seeing engine rotation for the duration of your drive , safety design

the other 2 relays will click to the closed position

For single person operation leave the key in the run position and remove the 2 later relays and they should click in your fingertips back open relay position

The fuel pump relay should have clicked for the 3 seconds and already be off but from the cabin you may hear the 3 seconds fuel pump running

 

There is an inertia / crash switch that can trip for no reason

Pic coming

it will always be in front of the car's right fwd door hinge on the fwd foot wall as a lone big black button switch to depress to reset

This pic is for a right hand steering model

 

Can't find the inertia switch....!

1996 XJ6 VP

 

On the right front seat by a person's right foot

there will be a small panel covering the engine ECU in the pic

 

Taking a siesta to get my blood pressure meds to start kickin

 

I'm back

 

In your photograph, you indicate a #2 fuel pump . The yellow line points a a small white connector. Is this the relay or are you referring to the bit underneath? I've jumped the 1st relay....but only hear a very faint hum. Not sure thats the fuel pump...Still no start withe jump wire in the relay socket.

 

The # 2 fuel pump is on the supercharged and V - 12 only

They both have the same fuse as the yellow line

The hum you heard is most likely the fuel pump running and you may have heard a gurgle of fuel returning to the tank from the fuel pressure regulator above the engine

Both engine compartment relays swapped, and inertia switch reset ?

 

Thanks!

I am trying to reset the inertia switch. Not that sure is functioning correctly. The switch button seems loose. I push it down but it feels flimsy. I'm thinking of taking it off and jumping (bridging) the power wires for continuity.

 

You can put a paper clip in the connector between the 2 white wires

If you take the switch apart, spring loaded parts will fly everywhere

 

If it seems flimsy, that probably means it has not tripped.

I'm going to guess its the crankshaft position sensor. It's a common failure and a replacement is not expensive and relatively easy to do yourself.

 

When cranking does the RPM show 300 ?

Mine just went out so I'm working it as the CKPS just arrived

 

When you say the car has plenty of fuel, you hadn’t just refuelled by any chance?
Or been caught in a downpour?
Water in the tank is what I am wondering…

 

To get around any issues with the fuel do you get some ignition with some starter fluid ?

This would verify the crankshaft position sensor and the ECU being powered up ( somewhat )

The large right # 5 ECU control relay powers the fuel injectors ( and returns power back to the ECU as your 2nd power needed at all times ) but the starter fluid would bypass that , just no 2nd power

Your 1st power is the ignition positive small relay # 9 in the corner of the right engine bay fuse box clicking closed