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1990 GMC Jimmy EMCB Fuse

Tiny
GMCCOOL3
  • MEMBER
  • 1990 GMC JIMMY
Electrical problem
1990 GMC Jimmy V8 Four Wheel Drive Automatic

My automobile blows the EMCB fuse everytime I put it in reverse and gas it. I have replaced the computer, alternator, fuel pump relay, fuse box, rewired the fuse box and replaced broken and burnt wires.
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Sunday, February 14th, 2010 AT 2:03 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, before the repairs, were there any trouble codes? Are there any codes now? If you pull the pump relay and connector for oil pressure swich that is in the fuel pump circuit, does the fuse still blow? I couldn't access out database a while ago to better track the circuits for the ecmb fuse. Two other circuits off that fuse goes to computer, not sure of purpose?
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Sunday, February 14th, 2010 AT 2:43 PM

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