PCM 30 AMP FUSE BLOWS

  • Tiny
  • ric1234
  • 1997 Ford F-150
  • 166,000 miles

Pcm 30 amp fuse blows

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Friday, November 23rd, 2012 AT 6:42 PM

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  • Tiny
  • JDL
  • Expert
  • 16,289 posts

I looked at 4.2l engine early production wiring. My wiring doesn't say pcm fuse, it just gives a number and amp rating. If it is the fuse I'm thinking about, like hunting a needle in a haystack. That fuse supplies many different circuits.

Just a thought, try pulling the fuel pump relay and see if still blows the fuse. That may not be conclusive?

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Friday, November 23rd, 2012 AT 7:16 PM
  • Tiny
  • JDL
  • Expert
  • 16,289 posts

I just rechecked the wiring, I don't believe pulling the relay will help.

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Friday, November 23rd, 2012 AT 7:23 PM

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