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My 1993 Chevy S-10 w/ a 2.8 keeps blowing theECM/Fuel Pump gu

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  • Cars & Trucks Master
  • 12,223 Answers

RUN the scanner/computer for easy diagnostic and fix it. YOu can have a bad alternator with overload in the system. In the repair shop they specialized instrument like oscilloscope for to see was going on in the electric system.
Do not waste time+money the electronic vehicle now is very complicated, and you must have use the resource available

God bless you

Posted on Jul 12, 2013


6 Suggested Answers

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Posted on Jan 02, 2017

  • 1224 Answers

SOURCE: E.E.C fuse keeps blowing in 1991 Ford Explorer

if you replaced fuel pump i would look at backward wiring when replaced and i would start at the source of work if your vehicle was working fine before replacement then 9 out of 10 it will be your fuel pump wireing

sometimes when putting wireing back together the connectors have the missing clip and in turn you can turn the wireing in both directions now where positive is touching the ground on both sides of connector kris kross problem check your work this is crucial use a test light to find the right wires where they go

Posted on May 26, 2008

  • 108 Answers

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.

Posted on Jul 12, 2009

  • 3854 Answers

SOURCE: fuel pump fuse blows

Check the fuel pump relay, i am not sure but i think there are two of them. Check the wire harness too, mice may have chewed in to the wires causing a shot in the system. 
Good luck and hope this helps.

Posted on May 09, 2009

michigan man
  • 3533 Answers

SOURCE: fuel pump not working and keeps blowing the PCM-B fuse. trying to find a way to put an aftermarket pump in line instead of replacing the factory pump.

this something i would not do checkout all of the fuses and the fuel pump relay before you do this try this website to see if they have you truck listed and i also would like to give you this information if you every have any hard to find GM-parts they sells only GM its Scharm auto & truck parts 1-800-292-1032 and they website is and i hope i have been some help to you Michigan Man

Posted on May 24, 2009

  • 2002 Answers

SOURCE: My 1993 chevy s-10 blazer keeps bogging out and

Check your timing. It sounds like it is off maybe enough that the motor jumped her time. Hope this helps.

Posted on Nov 14, 2009

Testimonial: "It idles perfect. No issues. Thanks for the advice. I will check the timing and the plugs and let you know if that helps. "

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