Hi again got a couple of issues was hoping may have advice on,

Firstly last few days when in the car and i press down the central locking switch to lock all doors inside one keeps popping back up is this a micro switch issue.

Secondly ive noticed a fuel smell last few days by the rear of my car close to filling point now ive already changed the fuel filter and the fuel pump and seal 3 months ago could this be charcoal cannister related or something else,ive not found and leaking fuel puddles or anything but deffo strong smell of fuel.

Does anyone know where I could possibly obtain a new charcoal cannister from please thankyou ???

Dealership will sell  you one, but it won't be cheap, close to a ton I should think.  Why not buy a secondhand one from a scrapyard, or from ebay? 

https://skoda.7zap.com/en/cz/fabia/fab/2001-225/2/201-201095/#1

 

Hi again cannister sorted looks like I need to replace micro switch passenger front door what I'm worried about is I will need to remove the door carrier which also means drilling out 4 pop rivets is there any issues I could face before or after removing this do these pop rivets need to be replaced thanks in advance.

I don't think you would need to drill out any rivets, as yours is a bolted on carrier panel, isn't it? You would only need to drill out rivets if you were replacing the window regulator, or loudspeaker, I think?

There's a how-to in the Fabia Guides section that should make it clear.

 

I don't think the problem with your door unlocking itself will be the 'door open' microswitch on the outside of the lock module, I think it'll be something within the lock module, but I'm not 100% on this.

You already checked for broken wires in the hinge area, I think?

 

 

Will have a good check of the wires but the issue only arises when I use the inside switch to lock all doors whilst in the car driving the passenger one locks down then pops back up the other 3 remain locked and its intermittent happening.