Working on a 1993 s10 Blazer 4.3 engine code W Ecm2 fuse blown, replaced and it blew instantly when the key is turned on. Replaced the fuel pump and relay. Started up and ran about 100feet and blew the fuse. Started taking readings on the gray wire that leads to the fuel pump, realized a dead short, somewhere between the relay on the firewall and the drivers floorboard. Ran new wire from relay to there eliminating the dead short. Started up 7 or 8 times. Took for a ride and made it half mile and the fuse blew. Replaced fuse, starts up runs about 3 seconds and then blows the fuse. I guess my question is what I did causing this? It actually does more now than it ever did. Is there other things on this circuit that could be causing the problem?
Sunday, April 3rd, 2011 AT 1:39 PM