Dude get it plugged into vagcom!
I had bad idling problems with my 1.6 (same setup as 1.4) when I first got it, and whenever I came to a stop, the engine cut out! .. I tried adjusting the cable, changing plugs, changing dizzy cap, changing air filter, changing ecu relay, etc etc, none of which actually worked so I had doubts about me getting it to run right and wanted to scrap it!
Went round to my mechanic, he plugged it into his computer, it came up with about 3 faults so he checked them on the computer and they were all sensors or switches built into the throttle body. My mate was breaking a 1.6 so I asked for the throttle body, he gave it to me for free because he didn't know if it worked, I fitted it, and everything was perfect again! I was over the moon

I don't normally have faith in computerised crap but this actually worked and I couldn't believe it