High idle on my Volkswagen Jetta 1989 1.8 liter Gas

Asked by Nov 06, 2016 at 03:34 PM about the 1989 Volkswagen Jetta GL

Question type: Maintenance & Repair

On start up my 89 Jetta climbs to 1500 Rpms and
works its way up to 2000 Rpms as it warms up.  
sometimes it will even reach 3000 Rpms. I even
tried turning down idle screw doesn't make much
difference at all. The car won't idle down unless I
put the car in Drive or reverse witch I know is hard
on it cause it drops to 1000 on doing this. Another
thing it's doing is when in drive the car picks up
speed with out foot on gas pedal. How would I fix
these problem? Would appreciate any advice.

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