What would cause missing when driving and at idle speed in a 1995 Suzuki Sidekick?

;tune up the car, cap,rotor,wires,plugs and air and fuel filter.

then evaluate

http://www.kick-fix.com/

Could be a timing issue. Timing may be off. Also check your spark plugs. If the engine has a timing belt, the timing sprocket may be wore out on the crankshaft. The timing will be off, loss of engine power and missing at idling speeds.

I have the same year and model as you.Same problem.I changed my spark plugs ,rotor cap and rotor.The problem still persisted, then I changed my spark plug wires and voila all was ok afterwards. Your gas filter may also cause that problem,so get it changed also. Good luck and merry Christmas