Got the pain in the arse P0172 code and tbh it's driving me mad...
Car is an a3 2001 1.8T AUM with 63,000 miles and is standard atm.
Car has thrown a bank 1 too rich code at me.
There are no driving problems with the car that I know of , it just idles badly.
The car seems to hate a cold engine on start up and idles about 1100-1200rpm for about 30 seconds and then goes back to the normal idle at about 700rpm.
Her idle then fluctuates about 100rpm constantly.
I have attached a couple of videos (I hope it's worked)
Things I have done - New Bosch mass air flow sensor , new oem diverter valve , checked for vac leaks and non present that me or the mechanic can see , Forte specialist fuel injector cleaner , new engine temp sensor .
Im no mechanic but I'm leaning towards a new lambda sensor or fuel pressure regulator.
Just wondering if anyone else had any other ideas at all ?
Btw I don't listen to Beyoncé , in the video it just had to come on the radio at the same time of recording...