paul with

HELP!!!,my 99 2 litre non turbo legacy engine has developed an "intermittent" fault.it simply stops at any revs,any temperature.we've checked fuel,spark,cleaned everything and replaced the 'top dead centre pickup',all without success.The'check engine light'comes on as it's about to stop,and goes out when it's died.It will usually restart after several tries and will run perfectly for 1 mile or 50 miles and then stop again. Not much fun on a busy motorway! ANY response would be appreciated. Thanks