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Jun 14th, 2026
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Joined: Jul 2014
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Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 38 Likes: 1 |
[2001 4/4 1.8 Black Top Zetec.
[Had a lovely drive out in the mild weather, came home and parked up in the garage. A few days later it wont start! The fuel pump is not working. New battery, new fuel pump relay, new fuse, all connections checked visually. Imobiliser light goes out when ignition is turned on, inertia switch pressed in. Have run out of ideas. Can anyone help please? Thanks in anticipation, cheers, Brendan.
Brendan
2018 Plus 4
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Joined: Jul 2021
Posts: 172
L - Learner Plates On
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L - Learner Plates On
Joined: Jul 2021
Posts: 172 |
Brendan,
Have you tried a supply direct to pump from battery?
Jack
1985 4/4 T/C 4 seater Royal Ivory
1934 F Type
2018 Pembleton SuperSport (self built).
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Joined: Jul 2014
Posts: 38 Likes: 1
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 38 Likes: 1 |
Hi Jack - I haven't. Might be a good idea. Do you know which pin to connect to? I don't seem able to find a fuel system wiring diagram.
Brendan
2018 Plus 4
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Joined: Dec 2009
Posts: 37,405 Likes: 977
Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 37,405 Likes: 977 |
On my older car it is a White/Purple positive switched feed to the pump, it might be worth putting a voltmeter on there first to see if it's live. I'm not too keen on having a spare floating live feed around a petrol tank, maybe I'm just too careful.
The pump is twenty years old now.
2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev
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Joined: Jul 2019
Posts: 5,436 Likes: 467
Charter Member
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Charter Member
Joined: Jul 2019
Posts: 5,436 Likes: 467 |
Brendan I have no idea of your Morgans fuel system where the pump might be located whether in tank or close to it.... on my 86 +8 the pump is mounted above the tank thus easy to get to. White and Purple as Richard suggests fits with my poor memory, but you will find wiring colour codes here should you have any confusion..
Wiring and Fusing - BS-AU7 Colour Codes (mgb-stuff.org.uk)
Good luck.
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Joined: Jul 2014
Posts: 38 Likes: 1
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 38 Likes: 1 |
Thanks everyone, my pump is of the in-tank variety and a pig to change I suspect!
Brendan
2018 Plus 4
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Joined: Aug 2010
Posts: 5,464 Likes: 171
Charter Member
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Charter Member
Joined: Aug 2010
Posts: 5,464 Likes: 171 |
As Richard says, start with a check for a voltage at the pump connector. And don't discount the possibility that your new relay is faulty.
Paul
Costock, UK
Plus Four 75th - Furka Rouge - Pip
Disco 5
Teddy - 17h1 Irish Draught cross
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Joined: Feb 2010
Posts: 1,415
Has a lot to Say!
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Has a lot to Say!
Joined: Feb 2010
Posts: 1,415 |
Thanks everyone, my pump is of the in-tank variety and a pig to change I suspect! It’s a tank out job to change, assuming you can hold of one You’ll probably have to swap the pump itself rather than the complete assembly
Simon @ Sifab.co.uk
Sifabtemporary@gmail.com
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Joined: Apr 2017
Posts: 1,799 Likes: 4
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Apr 2017
Posts: 1,799 Likes: 4 |
If the pump is faulty, have a word with Terry at Glencoe.at the link below. I think the pump shown is what I used but with a different flat strainer instead of the canoe type shown. Glencoe fuel pump
Bob
2009 Black Roadster
1999 4/4 2 litre Zetec
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Joined: Jul 2019
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Charter Member
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Charter Member
Joined: Jul 2019
Posts: 5,436 Likes: 467 |
My guess is that an in-tank pump may be fed through a connector that could also take in the fuel gauge, perhaps both using the same earth (black). That perhaps being the case then green/black may be the fuel gauge thus looking to find the white/purple as being live with the IGN switched on would seem a worthwhile check..? Assuming there are no other safety devices/switches between the ign switch and the inertia switch you mention.
In my car the oil pressure has to be present for the pump to continue running and on fuel injected cars there can be other measures used to ensure the engine is running to ensure that the fuel pump electrical supply is maintained.
Good luck.
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