CUTLASS adjusting idle speed 83 cutlass y code

[jim83]

I have an 83 cutlass supreme 305 engine y code- completely stock. It has the computer controlled quadrajet

How do you set/ adjust the idle speed? It's about 300 rpm high & there is no screw to set the idle that I can see

thanks!

 

[Rktpwrd]

Not on a computer controlled Q Jet and a bit tough to see in this pic, but they’re all done from the same place, here:

(White arrow)

Turn it clockwise to increase the rpm, counter clockwise to decrease.

 

[pontiacgp]

if nothing has been done to the carb to raise the revs you need more than an adjustment to bring them down. You need to find out why the revs have gone up.