VW Golf III TDI: Engine Problems & No Start?

Good day.

I've been experiencing a strange phenomenon in my Golf 3 TDI, manufactured in 1997, for a whole year now (!!!).

'The engine cuts out while I'm driving, and if you try to do something immediately...'
'It tries to start, the starter motor turns, but nothing happens. You have to try about...'
Wait a minute, and then the engine will start as if nothing happened.

So, the engine either starts up perfectly or not at all.

Sometimes you can drive hundreds of kilometers without anything happening.
and then it turns off three times within a kilometer.

It doesn't seem to be dependent on weather or temperature, but I have a...
I have a feeling that if it happens, it will likely occur within the first 50 kilometers of driving.
occurs.

As I said, I've been waiting for a year for the bug to be fixed, not just...
occurs sporadically.

I was at the workshop, and they read the error codes, but...
'Nothing unusual found, and I generally avoid expensive and pointless things.'
'Could this be? Could that be? Exchange programs... whenever I hear about a new...'
Control unit (it would be quite ironic, as I professionally repair these things).
It's supposed to cost 850 euros...

Does anyone have any advice?

Sure, here is the translation of the text from German to English:

'Micha' translates to 'Michael' in English.

Hi,

Have you ever checked out the famous Relais 109?
Search function --> enter 'Relais AND 109' and they will be helped .

Regards,
Andy.

Well, what can I say? It really was the relay.

Wow... / Intense... / Amazing... / Crazy...

I need to come to terms with the fact that my car is still... (and then whatever follows in the original text).
a few years can do

Sure, here is the translation of the text from German to English:

'Micha' translates to 'Michael' in English.