When my Blazer was doing that, I found that my EGR valve was bad. Was able to maintain an idle, but when engine was put into gear (under load), it died. There was just too much exhaust gas in the mixture and not enough fuel for ANY amount of power.
This is just one of several things that could be wrong, but this one get's over-looked.
Thursday, January 6th, 2011 AT 5:35 AM