as title, it s revs drop bellow 500rpm and the coolant system light comes on. sometimes it stalls all together! its done it for about six months now on and off but its got worse over the last week! ive tried my new spare afm and it still does it! i have heard that it could be the throttle body that needs cleaning? is this right? anyone else had this problem and how was the issue resolved? any help would be great.