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Jun 14th, 2026
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Joined: Jul 2018
Posts: 1,031 Likes: 2
Has a lot to Say!
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OP
Has a lot to Say!
Joined: Jul 2018
Posts: 1,031 Likes: 2 |
My Roadster is only taken out for brief runs every two or three weeks in winter. In the last week, it has started regularly to cut out for a couple of seconds before regaining power and running smoothly again. Fuel pump on the way out? Blocked injector?
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Joined: Feb 2016
Posts: 8,665 Likes: 408
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,665 Likes: 408 |
Or fuel pump relay? Easy swap to check.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Jul 2007
Posts: 27,807 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,807 Likes: 749 |
The fuel pump relay also powers the ECU on S1 Roadsters which I found out the hard way.
On my 3.7l Roadster the fuel pump relay was an issue. Dirt cheap to replace.
If you have 3.7l car try pressing down the relays. If they move that could be the cause, in Belle's case they seems to vibrate loose so they are taped down.
The AC relay can be used as a spare.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Oct 2021
Posts: 58
Just Getting Started
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Just Getting Started
Joined: Oct 2021
Posts: 58 |
Have the same problem with a '94 Plus 8, 3.9.
My problem is not the fuel pump, as it is brand new.
Can you tell me where to find this relay.
Is it a standard 30Amp (or so) 4 or 5 blade automotive relay?
TIA
Tom
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Joined: Jul 2007
Posts: 27,807 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,807 Likes: 749 |
Look under the dash on the UK drivers side , your passenger side. Look here on eary cars Dave's guide RelaysOnnewer ones they are on the fuse box on the UK drivers side
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Jul 2018
Posts: 1,031 Likes: 2
Has a lot to Say!
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OP
Has a lot to Say!
Joined: Jul 2018
Posts: 1,031 Likes: 2 |
Thank you all. It is off to B+C shortly to have some body work done, thanks to a Spanish lorry driver, so we may as well ask them to check the relay while it is there.
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