1998 Chevy Beretta rough idle

1998 CHEVROLET BERETTA
95,000 MILES • 6 CYL • 2WD • AUTOMATIC
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1998 Chevy Beretta mileage: 95,000. My car is in very good condition; however, it has developed a rough idle upon coming to a complete stop. The tachometer oscillates between 200 Rpms to approximately 1300 Rpms. If I don't even off the idle by giving it a little gas, the engine stalls. How and where do I adjust the idle? Thank you in advance for your help.
Nov 8, 2010 at 10:50 PM
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The idle speed is controlled by the computer. Your car may be ready for a major tune-up including spark plugs, plug wires, distributor cap, rotor, fuel filter and air filter. Also, perform a fuel pump pressure test. Clean fuel injection system including throttle bore, idle speed control motor and passages. If problem still exists, scan computer for trouble codes.
Nov 8, 2010 at 10:56 PM