hey fellas, my idle seems to bounce between 1000 and 700 when im idling at the lights, if i rev it for a sec and let go, itll stay steady on 1000 for a few minutes then bounce again...

another thing ive noticed, it seems to bounce when i press the brakes, or when i wind up the window or fan kicks in or something.... (this last note could just be a very big co-insidence in events)


but what could be the cause of this?

p.s im a 1.6 ek1 turbo