Jetta / Bora MK3 / 1992-1998
Vento/jetta 3 ABD engine, yr 1995, monopoint injection, been experiencing erratic idle between 1000 - 1500 rpm. lowest rpm is only 850
just for comparison - I own a second jetta 3, yr 98, full injection, idle is at a steady 600rpm.
Any idea whats causing the erratic idle and secondly how can i...