Scottish Elises

Car has been sitting a while but when I try to turn her over the fuel pump won't prime.

I thought it might be the alarm but I can't find it! It's supposed to be on tge rear bulkhead next to the ecu.

Any ideas?

Obvious maybe but have you checked the fuse?

Alarm is under the dash

Yes checked the fuse, I will look under the dash.

Have you tried the inertia switch? I think it's the fuel pump it cuts power to

Cobra alarm unit will be on the bulk head next to the ECU. Lucas immobilizer unit is behind the stack display on the dash board. Eliseparts do a wee bypas gizmo for the cobra unit (I have one spare if you want to borrow). The lucas unit is more troublesome. It sends codes to the ECU to say it's happy. If it's not happy, or lost it's codes it will cause issues. There is a company in Birmingham called "Best of British Rover" who re-coded my key, lucas unit and ECU last year. £40 IIRC.

Of course, it might simple be that your fuel pump is goosed )

There is also a cobra unit and the siren under the das at the passenger side. Are any relays or the like clicking?
Ie is it the ignition system or just the fuel pump?
Have you tried the main fuse beside the wiper motor?

The fuel pump will prime even if the ECU hasn't received the code (instead the engine will cut out a few seconds after starting) so you can ignore the code.

The usual culprits for fuel pump not running are:

* Inertia switch, as mentioned above.
* 10A (or sometimes 20A fitted) fuse that lives in the rear near the ECU; if your ECU is in the engine bay then the fuse is on the ECU plate, I think; if your ECU lives in the boot then the fuse lives in the engine bay behind a hole that leads back to the boot, on the pax side. The fuse holder is prone to melting when hot and also the associated wiring can go brittle.
* The immobiliser relay being borked (this one gets my money). The immobiliser relay lives next to the ECU in the boot (if that's where your ECU is) and has a 12 pin white plug where all the wires are black. The bypass Dom is talking about plugs into that.
* The MFRU might be full of water or otherwise broken.
* The actual fuel pump might be seized and thus it blows the fuse the moment you turn on the ignition.

Anyone with moderate electrical skills and the wiring diagram for your car should be able to diagnose this.