hi i need some help i have a vectra 2.0 ls dti 04 and it is reving high at juntions and i have to rev to stop it from stalling i have been told that my car does not have an idle control valve so i am really stuck with what to do the spanner light also came on the other day but went off again i can't get into my local vx dealer for 3 weeks as they are fully booked and am quite capable of doing it myself if it is something simple
please help