need year, and engine size
Sorry, for idle speed no adjustments are possible, its controlled by computer.
The computer for a 1991 Chevy Caprice Classic is located behind the glove compartment. This provide a centralized location which gives a small level of protection to the computer.
its located on the bottom of the air filter
check g/box inhibitor switch could be out of adjustment
Much like a 1975 Caprice Classic
None, there is no such thing as a 1998 Chevrolet Caprice Classic
Yes you can.
Google 1999-2000 Chevrolet Caprice Classic.
A Classic Caprice is a more upscale caprice, sort of like a separate trim level. Classics included small upgrades to the regular caprice, but not quite enough to warrant a trim designation.
go ask your mother