So that's a voltage drop of +1V!

Way too much,

And I'm assuming this is after the glow plug lamp has gone out after the glow cycle yes?

Something is eating up voltage.

'course this being a French car my instinct is high resistance,

So as I see it your going to have learn how to do voltage drop test,

Lots of videos on YouTube.

The most valuable test to learn.

Or call in a spark.

Oh and STOP bying parts!!

You've cost yourself well over £100 so far.

I did wonder if it was an earth issue possibly.

The battery was knackered due to it being stood and the starter motor was playing up. Very stiff once removed ( 3 hours to get it out )

At one point with two batteries connected it dropped the batteries to 10.5v momentarily.

It's a manual 6 speed

As soon as I put the card in and the glow plug light and all dash lights come on it saps the battery.

Looks like I need to try find out where the power is going.

Thanks

Just for anyone's info incase they have the same issue.

I fixed it. Turned out to be the battery mega fuse had a hairline crack in it. So sometimes when attaching jump leads it would make a connection, other times it would not. £14 and she runs a treat.

Apparently quite common according to the local independent Renault garage.

Well worth a check.

Thanks for the input of others.

That's good news. I was just thinking when I read the thread subject that I can't remember the last time I saw a MK2 Laguna. One thing they didn't do was rust!