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I have a 98 SN with the 5.7 TBI motor in it. Started having problems about three weeks ago with the engine bogging down. I thought it was a fuel issue so I replaced the fuel pump relay and the ecm relay and eventually ended up replacing the high pressure pump and filter in the FCC when the new relays didn't fix the problem. Now, and even before I replaced the fuel pump, the 10A INJ/ECM fuse keeps blowing. It started happening after the engine first bogs down and became more regular. Now after I turn the key to prime the pump, it blows the fuse. All the wires look good to me including the battery terminals. Anyone have any ideas?
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