Question about 2000 Ford Expedition

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My 2000 ford f-150 pick up has a battery problem. it is a new battery but when the truck sits for 2 days the battery dies. when charging the battery inside the truck i can hear a clicking noise. i pulled the fuses until the clicking stopped. it is fuse #15. the book says the 5amp fuse controls the stop lamp switch, pcm module, gem module, and rabs test connector. one at a time i disconnected the plugs on the stop lamp switch, abs, and put the fuse back in to see if the clicking noise went away to try and eliminate each one as the problem. all 3 did not work. when i did it to the pcm the clicking went away and when i plugged the pcm back in and put the fuse in it the clicking noise went away altogether. did i possibly reset the pcm module and it is fine now?

Posted by Anonymous on

  • Lloyd Jacobson
    Lloyd Jacobson Apr 06, 2017

    I have one and had the same problem with it,it was the positive battery cable. It fried my battery and alternater. Replaced cable and everything else. It runs great now

  • Lloyd Jacobson
    Lloyd Jacobson Apr 06, 2017

    Sorry wrong answer for that question



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  • Contributor
  • 23 Answers

Of course it is possible.
Disconnecting the battery would have done the same thing. Sometimes holding the disconnected terminals together resets computers. I believe it empties the internal capacitors.
You did a great job of narrowing it down. Unfortunately the ecm is connected to a lot of things and like the person b4 me said you can find out exact parasitic draw by hooking up an ammeter in series with either battery terminal. Jeff also was correct in suggesting you find the device that clicks next time. You can use a vacuum hose from AutoZone held to your ear for that. We use a stethoscope.

Posted on Apr 06, 2017

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  • Ford Master
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Where was the clicking noise coming from ? Could be a relay the PCM controls . It's possible it will do it again but you never know . If the battery dies again do a parasitic draw test . Improved Methods to Find Parasitic Draw Battery Drains Overnight

Posted on Mar 21, 2017


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Posted on Jan 02, 2017

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SOURCE: battery drains in a few days.

Disconnect the pos while running- if it still runs the alternator is working to run it. If not get the alt diodes tested, it is possible it is causing a drain while sitting. If it is working, check to see if it is overcharging because that can cause the battery to break down- "sulphate"' the plates and cause an internal short that will drive you crazy trying to find the short in an automobile component. If you just make short trips you could just be not charging it enough do deep cycle it. Have the batt tested- its usually free after all. In my part of the country I've never seen a modern 8yr batt last longer than 3 1/2 years, so don't assume it's good.

Another problem is you might have an internal short

Posted on May 14, 2009

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SOURCE: I have 2001 F150 that wont shift out of park keeps

A shift release solenoid is to blame causing this problem. It is shorted out and needs to be replaced

Posted on Mar 07, 2010

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SOURCE: shut the truck off an imediately went to start it

check trailer lights plug sounds like it touching the bumper shorting out

Posted on May 07, 2010

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