I AM HAVING ELECTRICAL ISSUES AND MY ENG FUSE KEEPS BLOWING. WHY IS THIS HAPPENING?

  • Tiny
  • tophdaddy
  • 1996 Chevrolet Blazer
  • 150,000 miles

I just finished changing out my transmission. I started it up and it began to blow the fuse. I don't know what would cause this. Engine will not run properly with out this fuse.

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Thursday, July 12th, 2012 AT 2:01 PM

4 Replies

  • Tiny
  • Docfixit
  • Expert
  • 18,993 posts

4.3L? Does fuse blow sec. Key is turned to start? If yes several things feed by that fuse check work see if wire got pinched possibly between trans and engine

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Thursday, July 12th, 2012 AT 2:19 PM
  • Tiny
  • tophdaddy
  • Member

Yeah it is a 4.3 and I checked all of wire running to the trans and we made sure the hot wire running to the starter wasn't grounded out and didn't help. Fuse does blow as I turn the key on

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Thursday, July 12th, 2012 AT 10:26 PM
  • Tiny
  • Docfixit
  • Expert
  • 18,993 posts

Check all O2 sensor wiring look for pinched or damaged wiring

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Friday, July 13th, 2012 AT 3:12 PM
  • Tiny
  • tophdaddy
  • Member

Thanks for the advice. It was the o2 sensor itself shorting out. Got it fixed and runs great.

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Monday, July 23rd, 2012 AT 2:31 PM

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