the idle should be about 900 RPM in park or neutral.
Try nada.com
yes it will fit
81-86 are the same. 87 is the same as the 88 supreme classic. 87 grills will NOT fit an 86 without changing the entire header assembly.
how many pounds do 86 cutlass weight
If it's a Cutlass Supreme (RWD), 4 speed is a TH-200r4. 3 speed is a TH-250. Not sure about the FWD cars (Calais, Cierra).
it cost hellas u might as well buy another car or sell that one.
You may want to check for sticking throttle linkage/cable and also your ignition timing may be advanced
Easy answer to this. Don't put them on stupid cause if you are having this kind of problem they are to big.
belts bad ac compressor timing chain.listen to see where the sound is comming from.that could help alot.
Under the hood, on mine.
NOT AN EASY JOB all of the av ducts have to come out from under the eash. Get a manual on your car and it should have pictures.
Make sure wires are not disconnected Maybe bad switch maybe something restricting movement