Update

This car is some distance away. I have only seen it once since my original post.

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The key diagnostic is when ignition is turned on the coil unit and fuel pump get 12v+ for about 2 seconds, then 0v.

See image of test of all cables at coil unit and fuel pump.

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The issue is not (I believe the red crash button). I have both pressed it and bypassed it. See photo.

Reminder. Car sat for 5 years. Started easily. Drove for 10 minutes. Returned a few days later and no start.

Any further suggestions?

More relevant info to previous replies.

This is a Clio MK2 phase 1. It does not have relays under the bonnet, near the battery.

It is parked against a hedge so I have not checked around the glove box for relays. If relays are there, do I need to remove glove box?

On first day of the problem I checked all fuses under the bonnet and to left of glove box (see image). All were OK

Any further guidance would be appreciated.

under bonnet fuses - no relays

cable Testing at coil unit and petrol pump

left fuse box

Has this got 4 seperate coils or one coil with 4 leads ? Also ,i'll ask the same question again , is there a spark at the plugs. ? Is the engine ecu bolted to the back of the inlet manifold with a metal cover over it?

Update

I have a spark.

I switched positions of the three relays beside the battery

I cleaned the crank sensor - good video youtu.be/3Bu-E5HQqjI?feature=shared

I have power to the fuel pump when cranking but no fuel coming from pump.

I assume I have a faulty pump, unless someone has some other suggestion.

It seems that it is the same pump for Clio petrol from 2001 to 2020 - am I correct?

Numbers on the pump: 8200 112 805 0974 665 9901

Prices vary form £40 to over £200 Used / New

Edited by Colin K on 01/09/2024 at 12:44

I have an earth. No green/yellow wire. The two main wires are black (neg) and brown (pos).

The fuel sender unit does not work, so I think it is time to buy a pump!