Engine starts, engine stops
I have owned my alfa 156 2.0 TS only 6 months and although I love it dearly, it is proving to be rather problematic (new clutch, new clutch slave, new crank angle sensor). My latest problem has developed only in the last 2 days - when I turn the car ignition on the engine comes to life as it always has then instantly revs drop and it stops completely. This is fixed by simply giving a bit of throttle for a few seconds and it wont drop anymore. I feel like maybe if I reset the computer this could fix it>? the fault light doesnt come on. Also, when I back off the throttle (put it in neutral approaching lights) the revs do not stay constant but drop almost to nothing, then back up to roughly 1000rpm where it should be. It cut out on me yesterday. Again, this only happens for a couple of seconds and then revs return to normal, and constant.
Your thoughts would be much appreciated, I need to sell this car unfortunately as I am moving away very shortly and it would be good to sell it confidently! Thanks in advance,