Well I got my car back today from the local Volvo shop and they replaced the hall sensor. On the way home the engine started to climb to redline. When it is started now it climbs to redline without me even touching the gas pedal- and I have to shut the car off almost immediately. The throttle body air valve looks OK as far as opening and closing and the shop folks came out and replaced the CIS motor, but it still didn't help. I also disabled the AMM to see if that would make any difference and it doesn't. I don't trust the shop at this point as they don't have any answers other than the engine harness is bad -which it is not as it is only a year old !! Any ideas would be greatly appreciated as this car is about to do me in - LOL !!!