On all those who have a clue: I bought some time ago an XG30 year `99 and am fully satisfied with the car. Unfortunately, the following problem appeared recently – the idle speed was around the 900, now this fluctuates at 500 and the engine stutters in idle, from 2000 To get quieter. (What is important, the vehicle could not even be read out by ATU until now, because the connection is available for reading, but not compatible with the common errors The engine runs smoothly from 2000 rpm, but still doesn’t have the old power. The third gear of the automatic transmission is brutally inserted. The spark plugs incl. coils are ok according to the mechanic, as well as the air mass meter. Some things that I “co-purchased”, wzBsp the tanker, tacho, I was able to repair myself. But now I am at the end with the latain. So if someone can give tips without the car for troubleshooting expensive to the workshop. ellen, I would be very grateful. Thanks in advance to all Hyundai owners and car screwdrivers…