▲ 3 r/MK4Golf
1.8T (AGU) Bad idle
I was doing maintanace around the engine and decided to clean throttle body. After cleaning my idle RPM was 1200 and car lost power. I found that connector on throttle body was broken so replaced it with new OEM throttle(Adaptation was done after cleaning and after changing into new one). Now the engine drives amazing but idle RPM sits on 1000 sometimes goes to 1200 and sometimes stays at 920 but then car starts shaking and rpms go back to 1000. Checked MAF, ICM module, Vacumms, PCV everythings good. Still idle is very unstable maybe someone had this problem and found a fix? Also there are no fault codes.
Edit: When i turn AC or heater on RPMS always keep stable at 900 no shaking and running mint on idle
u/DankeCS — 10 days ago