1990 k5 ecm fuse blows after fuel pump installed
No the fuse wasnt blowing before. However I pulled the battery & charged it because it went down for some reason. So I took off the breather and found the electronic control spark module and replaced it for $77.00 figured it cant hurt so for now it will start & run real good but I have not road tested it yet. Oh yeah the check engine or service engine soon light is but its been on before?
Last edited by xs2003; Apr 28, 2011 at 03:57 PM.
When I replace the fuel pump I had to replace the relay Fuse on the firewall on the passenger side. this fuse may still work but may cause the fuel pump to grown out. Second on the frame of the driver side make sure the grown is connected all the way. The reason I say that it may come lose due to off road. You may want to reconnect the grown to somewhere in the engine compartment.
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