daca ne luam dupa ce scrie la carte... Air intake leak: A leak in the intake or vacuum leaks (check the dipsick o-ring seal and oil filter seal) will make your car idle roughly. Spark plugs: Old spark plugs will make your car idle and run rough. Change them, good time to try those expensive Bosch platinum +4. Some owner use a slightly greater clearance: set them slightly larger to 0.86-0.91mm (0.034-0.036in) to help improve the idle with the stock plugs. Ignition wires: Check the ignition wire resistance with a multi-meter, it should be around 0 Ohm. Idle Control Valve (ICV): This expensive part gets dirty. You should clean it (along with the throttle body) each time you adjust your valves with carburator cleaner. If there is no improvement and your ICV had never been changed (there is sometimes a year stamped onto the casting), change it. Other considerations are: leaking injector, faulty temperature sensor, faulty oxygen sensor, check all electrical connections.