Have found no broken or frayed wires
Might be the pump its self goosed if its grounding inside the pump it will pop fuses dont disconect ecu though even touching them can knack them the static from your hands can wipe the programing where rubber gloves if you need to handle them hope this helps ivan
SOURCE: 93 s-10 blazer keeps blowing ECMB fuse which also
The ECM tells the fuel pump to come on. You can get a circuit breaker from most parts stores, and many stores you can get a repair manual for $20 that will have a schematic in it.
SOURCE: Tail light fuse keeps blowing. I have traced the
Are the bulbs out of the sockets and the fuse blows?
Take bulbs out and check again
Place one back at a time if fuse was OK with bulbs out to locate bad bulb.
Otherwise.......
Do this........if still needed with bulbs out and fuse blowing.
Put a circuit breaker in to replace the fuse of the same amperage.
It will trip off then back on.
Use a standard cheap magnetic compass........place along lighting wiring........the wire with current will cause the needle to jump as circuit breaker trips on and off.
Follow path of current to problem.....the compass will stop moving once past the shorted /grounded wire/connection.
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disconnect the fuel pump..it pops...disconnect the main relay(fuel pump relay) ...it pops...disconnect ecu it still pops... i cant find out where its grounding out at
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