ive been foolin round with a new engine for a few weeks and it still doesnt run right. so i decided to put a scanmaster on it to find out why its so rich/missing only to find that it isnt getting an aldl signal (the scanner works and i tried the ground test that bob posted and it wakes up again) - what is the problem - my ecm? this really sux that i can scan the new engine to get it right.