Hello,
my Polo starts in the morning, and after seconds it dies. Rpm drops to 600-650 and it stops. Usually it makes this, when the humidity is high, and the car stopped for hours. When I start it again, everything is perfect.
I replaced the fuel pump, fuel filter, coolant sensor, spark plugs, wires, distributor, and cleaned the throttle valve, but nothing happend.
Can anybody help me? And sorry for my bad english, this isn't my mother language

I'm certain Wino will be along shortly to help you as he is the font of all knowledge concerning Polo's (not the mint with the whole, that will be Mr. Rowntree).

A distributor? Just how old is this Polo?

 

This sounds more like an ignition coil failure to me.

Sorry, i attached a photo.

We read the fault codes, but it didn't show anything, just Immo error.

 

And the polo is 2001

Check the solder joints on the cluster PCB. Top two of the green 32-way.

Where can I find the cluster PCB?

https://www.briskoda.net/forums/topic/369663-yet-another-fabia-immobilizer-thread-solution-included/

Thanks, I added some new solder to the pins, but it looked perfect. I uploaded a video about the starting, it didn't show any immo error, but it stopped.

Ok, this could be an air leak, check all the vacuum hoses to the brake servo for splits.