Question about 1997 Ford F150 Regular Cab

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My F150 keeps blowing pcm fuse

Was running great and just died now it keeps blowing the pcm fuse

Posted by Anonymous on


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Posted on Jan 02, 2017

  • 55 Answers

SOURCE: pcm fuse keeps blowing and van won't run

sounds like dead short....would look at wire diagrahm to see what ground is hitting a hot wire...maybe alternator,starter, fuse block....ect....

Posted on Jun 25, 2010

  • 1 Answer

SOURCE: 1995 ford ranger pcm blowing

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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SOURCE: why does my pcm fuse keep blowing on my ford f150

Check the Powerbox for a group of Relays and try replacing the PCM Relay.

Posted on Mar 15, 2014

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My 2004 ford explorer keeps blowing the ignition fuse also i noticed that my windshield wipers also stopped working

You have a short to ground on that circuit ,the only way to find it is to find a wiring diagram an see what all gets power from that fuse .Then isolate each circuit until the fuse doesn't blow any more . Go to youtube an check out some videos on finding a short on automotive wiring . Also I suggest you check out some videos on basic automotive electrical trouble shooting . Finding an fix automotive electrical shorts is best left to a automotive electrical repair shop !

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Why does my pcm fuse keep blowing on my ford f150

Check the Powerbox for a group of Relays and try replacing the PCM Relay.

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Click on the link.
Voltage for fuse 18 comes from, pcm power relay.
Terminal 30, load side of relay is fuse protected and hot all the time. If you unplug that relay and use jumper wire between terminal 30 and 87, fuse 18 should go hot. That should mean, the control side of relay has a problem, The control side needs voltage and ground.

Jul 24, 2017 | 1999 Ford F150 Regular Cab

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Pcm fuse keeps blowing

There is a wire grounding somewhere ,more than likely on the engine.

Oct 02, 2013 | Chrysler Cars & Trucks

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I have a lucida emina and the fuse panel is all in japanese. I keep a 15a fuse every time i switch on the ignition and want to know it controls. I'm hoping it's for the injector unit as I'm getting fuel to...

Troubleshooting wiring can be a difficult task when your doing it much less telling someone else to. If your blowing a fuse you need to find out what that fuse runs. The best bet would be to get a book on the vehicle and see what circuit is blowing.

You will want to start by looking for wires that are burnt or touching the exhuast. They dont even have to be on the same circuit for it to matter. As an example if the o2 sensor wire on a v6 f150 burns on the exhuast it will blow the transmission fuse and sometimes the pcm fuse.

Mar 26, 2011 | Toyota Previa Cars & Trucks

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Engine stopped while running - will turn over but not start- replaced pcm fuse - started and ran awhile - replaced fuel pump relay and pcm fuse - engine will turn over but will not start.

Generally when a PCM fuse pops it means either the wire to the PCM is shorted or the PCM itself has a short in it. If this is a short in the fuel system its most likey the connector or the pump itself.

May 20, 2010 | 1998 Ford F150 Regular Cab

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I have a 2002 Ford F150. Fuse 15 (5 Amp) keeps blowing.

replace nuetral safty switch for gear shifter and check window relays

Feb 12, 2010 | 2002 Ford F150 Regular Cab

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Getting a message

Have this checked with another scan tool. Link error is produced when the PCM fails to respond to the scan tool. More times than not this is the PCM failing.

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20amp fuse in black box keeps blowing


The fuse ecm b it tied to the fuel pump, PCM, and VCM.
Fuel pump could have an internal short
check it by the way...


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