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1996 Spi - No Power To Fuel Pump


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#1 VinnyS

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Posted 12 March 2026 - 04:38 PM

Hi All,

 

I'm sorry if this has been answered before but please if anyone could help me I will be forever in your debt!!!!!!!

 

I'm nearing the completion of my 1996 SPi Cooper restoration and I've reinstalled the engine/electrics/vacuum pipes but I can't get power to the fuel pump!!!

 

I have spark and the car cranks and will fire if a little easy start is sprayed into the injector - The red bulb for the immobiliser was flashing initially but has stopped for some reason but there is power going to it when checked with a circuit tester - is there another way to check it is functioning correctly?

 

In an attempt to isolate the problem I've disconnected the battery and connected power directly to the plug and traced back to attempt to isolate the problem and have discovered I have power through the inertia switch and to the fuse but I don't know where to check after this.

 

Am I looking at:

An immobiliser issue?

An ECU issue?

Are there any sensors that control/work with the fuel pump - crank etc?

 

 

Thank You All.......

 

Vinny



#2 mpialan

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Posted 12 March 2026 - 06:25 PM

Has the Inertia Cut-off been accidently activated.

#3 VinnyS

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Posted 12 March 2026 - 09:13 PM

Doesn't look like it. I reset it - no change then bypassed it to be sure!!



#4 NLinPEN

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Posted 13 March 2026 - 07:59 AM

Have you applied power directly to the fuel pump to confirm that the pump actually works?



#5 Quinlan minor

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Posted 13 March 2026 - 08:34 AM

I had an MPi which, when the immobilser was triggered, would happily turn over but not start.

Most annoyingly, the immobiliser would self-arm when sat in the car, engine off, waiting to pick someone up/make a phone call/etc.

It would then start and run just long enough to let you pull out into traffic, on the residual fuel pressure, before dying.  :o 

I then had to arm the immobiliser with the remote, wait until the red flasher stabilised, before disarming the immobiliser.

The car would then happily start.

After a couple of hairy situations, I had Paul at Technozen disable the automatic enable, on the immobiliser.

Might be worth trying the above procedure?






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