Question about Ford Ranger

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1995 ford ranger pcm blowing

Pcm fuse is blowing as fast as can be replaced what all does this fuse control run or engage

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I would disconnect the computer and put a new fuse in and see if it blows again. if it does not blow then the short is in the computer if it does blow the fuse with computer disconnected then the short is in the harness let me know what happens

Posted on Apr 19, 2013

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  • Ford Master
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It's the fuse for the engine computer, anyway, don't know what else. But it could be a bad computer, or more likely, a short in the wiring to the computer. Pull off the connector to the computer and start checking wires for melted insulation, or a broken wire. Pull off the negative battery cable and run continuity checks on the power wires to the computer. You may have to pull some of the engine harness apart to check wiring-it can be very tedious-if you can't find any bad wiring, a short, then it may be a shorted computer.

Posted on Apr 18, 2013

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Posted on Jan 02, 2017

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SOURCE: keep blowing the starter relay fuse on my 1995 ford ranger

Had similiar problem on a old Austin Alegro 25 years ago.

2 reasons.
Starter had worn wire insulation. Used industrial yelow sticker foil on that.
Fuse blow in sane curve highway every time. Car was repainted and wire harness reinstalled unprofessionally previous owner.
Crawled half a day every square mm and yep a litle broke insulation on a positive cable grounding to chassis an blowing the fuse.

Posted on May 04, 2009

emissionwiz
  • 76630 Answers

SOURCE: fuel pump fuse blowing

replace the fuel pump, it is drawing to much current, this is common when the pump bearings get worn out, also make sure you replace the fuel pump connector at the fuel tank connection, it will be burnt..

Posted on Jul 02, 2009

outdoorsman5
  • 631 Answers

SOURCE: Help 95 ford contour obd-1 error 335

I was reading in one of my repair manuals and it says in there that there could be a block where the exhaust gas pressure sensor is. There could be a blocked inlet hose. Or it could be the ECM.

Posted on Sep 11, 2009

tecnovative
  • 360 Answers

SOURCE: I need a fuse diagram

It is fuse 13.


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Please rate this solution.

Posted on Jan 10, 2011

  • 946 Answers

SOURCE: 2001 Ford taurus #22 fuse (A/C clutch relay PCM

Remember that when you THINK the AC's off,it's really not.Almost all cars have the AC compressor actuate every time you set the dial to `defrost' or `mix' positions.
On a TAURUS there are only two positions(maybe three)which DON'T kick the AC on.On some cars,that's the 11 o'clock and 2 o'clock positions on the selector.

SO...........the odds are that the compressor magnetic clutch or wiring to it has shorted.Because you really have power going there even when you think you don't. (:^) don-ohio

Posted on Oct 30, 2011

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