Originally Posted by RSCossieGaz

When starting car from cold for approx 5 mins the car idles very eracticly the revs go up and down between 500 rpm to 2000 rpm.I have changed the idel speed control valve for a new one and put new plugs in hoping this will sort the issue but since i changed it i would say its been worse also when driving have found engines not running smooth at all only when cold when warms up all seem fine.

What sort of things should i look for? ive changed isv and plugs what next should i go for rotor arm,cap and leads?

any help would be great!