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        General >> Problems >> Fuel pump problem 0 '94 2.0L DOHC Scorpio
        
(Message started by: meeko on Oct 22^nd, 2007, 1:27pm)

Title: Fuel pump problem 0 '94 2.0L DOHC Scorpio
Post by meeko on Oct 22^nd, 2007, 1:27pm

Hi all,

I seem to have an electrical fault with my '94 Scorpio (non frog-eye). It will no longer start and I have isolated this to an electrical fault with the fuel pump circuit.

If I manually supply 12v to the middle-pin of the intertia cut-off switch, the fuel pump starts and I can drive the car. Without this supply ths car wont start, so I presume it may be the fuel pump relay.

Does anyone know where this, as the Haynes manual is not at all clear.

Thanks,

Steve

Title: Re: Fuel pump problem 0 '94 2.0L DOHC Scorpio
Post by jonnycab on Oct 22^nd, 2007, 1:37pm

In the Scorpio the fuel pump relay is in the battery side fusebox & it is the large green one with a purple top....not sure if this is the same as the Granada Scorpio though :-/

Title: Re: Fuel pump problem 0 '94 2.0L DOHC Scorpio
Post by Alastair on Oct 23^rd, 2007, 9:02am

Steve

This could also be caused by a problem with the signal from the ECU to the Fuel Pump Relay. This signal provides a 12 volt supply to the pump safety switch and then to the pump. This signal is provided from the EDIS unit to the ECU (black and white wire) and can be checked as follows: -
Pin 1 EDIS to Pin 48 PCM (ECU) - black and white
A four channel scope
Channel 1 EDIS positive - Ignition feed
Channel 2 EDIS ground
Channel 3 PIP signal
Channel 4 Crankshaft Sensor

This applies to the '98 2.3 16V - not sure about the '94 2.0 but i'm sure others will know - Stuart ??

Alastair

Title: Re: Fuel pump problem 0 '94 2.0L DOHC Scorpio
Post by Highlander on Oct 23^rd, 2007, 9:21am

Not got a clue about the Granada, i missed the MK3, I had a MK2 then got lost in the Rover wilderness a bit till i returned to the Scorpio ;D