Bad idle and no driver side running tail lights. HELP

[RussianEclipse]

Alright got two questions. My 95 GST just got running again and I have a nasty idel problem. Starts up about 900 then slowly rises to 1700 then fluxes from both points and if quickly close the throttle it will almost shut off. I know that not normal. After almost replacing everything to just get it running again it fixed a little now when warm is a little better say 900-1200 but holds. And my driver said tail lights don't work. Fuses are good and bulbs switch with passenger. Now they work with turn single/ brakes/ hazards. Just not normal running. I looked up the diagram and only difference is running has separate grounds. I'm thinking just making a new ground. Would be good if I got a someone's opinion. Thanks.

 

[PlanZero]

Did you try cleaning the throttle butterfly? Or even better removing and cleaning the entire throttle body. I had a similar problem and it was just oil blow back gunking up the throttle. Make sure your air hose doesn't have oil sitting in it. DK about tail lights

 

[jdeleon35]

did cleaning the throttle work on your idle problem? Mine is doing some funny idling too and this helped.