On Alfa number 15
AO Platinum Member
Join Date: Dec 2005
Location: United Kingdom
Re: Going Mad and Cutting out
This is a classic symptom of crank sensor failure. Do a search it was covered very recently try also TDC sensor.
The temperature itself wouldn't have damaged it, but the tend to (but not always) play up at high engine temperatures when on the way out. The many heat cycles that they go through throughout their life eventually kills them.
Don't worry a new one is only about £25