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General Tech Good at troubleshooting? Have a non-specific issue? Discuss general tech topics here. IF YOUR QUESTION IS SPECIFIC TO A CERTAIN MODEL, IT DOES NOT GO IN THIS SECTION.

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  #1  
Old 07-17-2006, 06:41 PM
 
Join Date: Jul 2006
Posts: 1
Default ECM-B fuse blown

I have a 96 GMC 5.7 vortec that keeps blowing ECM-B 20amp fuses the truck will just quit and then if you let it cool down for about an hour it will let you put in a new fuse without it blowing and run for about another hour. Heres what ive done- I replaced the fuse with a fliptop off a beer can and that got me off the highway( I noticed when i did that the fuel guage pegged past full), i tried a 30 amp and it blew with just the ignition on, i replaced the fuel pump relay and that did nothing, i played with the wires and havent found a short anywhere on the top side. Any ideas whats going on?? by the way if i get it running and just let it sit and idle it will still blow the fuse. The fuel pump isnt that old could it be the pump wiring??
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  #2  
Old 07-25-2006, 04:00 AM
 
Join Date: Jun 2006
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Posts: 3
Default RE: ECM-B fuse blown

Have you had any tranny work done lately? If so inspect the harness over the trans that supplies the o2 sensors for a short. Have had 3 customers in last 2 years with same problem.
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Old 07-25-2006, 04:00 AM
 
 
 
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2001, 98, bad, blowing, blown, blows, carlo, ecm, ecmb, fuel, fuse, ign, monte, pump, s10, suburban


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