I have an ongoing intermittent problem with my 240 that is driving me nuts/ rendering the car unsafe to drive. I've had it into a Volvo specialty shop multiple times and they've never heard of such a problem, and have found nothing...so now I'm throwing it out to the internet to see if anyone can help me! I have a 1993 240. On a fairly regular basis after I've been driving at highways speeds, as I come to a stop I will be almost completely stopped when all of a sudden the engine will rev way up, rendering my brakes useless. So I shut the car off, pull my parking brake and restart the car and it's back to normal. I've almost rear ended people numerous times while trying to come to a stop at a light or pulling into a parking spot. Im leaning towards it being an electrical problem? The shop I take it too says the IAC is very simple and would be unlikely to be the culprit. At this point, I'm willing to pay to throw a dart and replace something just so that I feel like I'm trying to address the problem. Any guidance/ advice would be greatly appreciated. Thanks!