ECM B Fuse keeps blowing, engine won't run.

rpage · 05-25-2004, 06:35 PM

My buddy's 87 chevy s-10 2.8L 2-wheel drive truck won't run all of a sudden and it is because the ECM B fuse keeps blowing. We tried tracing the wire down but we don't see a problem with the wiring. The fuel pump relay is new and good, and all grounds seem good. If you take out the fuel pump relay, the fuse don't blow. We also disconected the fuel pump wires from the pump and we are still blowing the fuse. We are out of ideas, anyone have a clue, what to look for, specific fixes, anything?

Thanks in advance.

michelq · 05-26-2004, 05:48 AM

check oil sending unit wires and under carpet driver side

wehswarriorS-10 · 05-26-2004, 10:03 PM

my 87 2.8 4wd did the same thing....i just put a clutch in it and pinched up some wires on the top of hte bellhousing and some under the transmission crossmember

goes · 12-27-2005, 04:58 PM

Quote:

Originally Posted by rpage

My buddy's 87 chevy s-10 2.8L 2-wheel drive truck won't run all of a sudden and it is because the ECM B fuse keeps blowing. We tried tracing the wire down but we don't see a problem with the wiring. The fuel pump relay is new and good, and all grounds seem good. If you take out the fuel pump relay, the fuse don't blow. We also disconected the fuel pump wires from the pump and we are still blowing the fuse. We are out of ideas, anyone have a clue, what to look for, specific fixes, anything?

Thanks in advance.

Any luck with the fix?
I am having the same problem and NO Solution!
Please Help!

MT-2500 · 12-27-2005, 06:03 PM

Ok fellows/and or ladies here is a link to a pdf on the wiring.
http://members.troublecodes.net/crunch/ecmbfuse.pdf
Copy it off the link sometimes doe not stay up very long.
Good luck and let us know how it goes
MT

unbe · 12-27-2005, 06:25 PM

I would try a different relay, sounds like the coil in it is shorted.

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