Title says it all... Had a minor service coming up for my EP91 and did the usual - oil & oil filter change, spark plugs change, air filter change and a check on the state of my brakes. Problem started after the throttle was cleaned with carb cleaner, from the outside (it wasn't dismantled at all). The car now has an irregular idle that disappears when the car is running at highway speed, and rears its head when i'm in traffic or on low gears (1&2) and driving at a slow speed. Moreover, there's no check engine on the dash. I've tried several solutions: disconnecting the battery for