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post #1 of 15 (permalink) Old 07-25-2012, 10:39 PM Thread Starter
 
Join Date: May 2009
Location: Richmond Ontario
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Electrical problem

Good evening folks. Having a strange problem with my instrument cluster and radio and power mirrors.
I start my truck and everything is working perfectly. Drive away and within a few seconds the entire instrument cluster (speedo, tach,fuel gauge,oil pressure,tranny temp,coolant temp) all go off. As well as the radio and contol of the power mirrors.
My blinkers and headlights still are running. Sometimes I only go a few seconds and everything comes back to life and sometimes it takes a few minutes??? Happpens at least once every day.
Has anybody seen or heard of this before?
Any insights are appreciated.
Thanks
rob

2005 F250 6.0 diesel with about 260000 K
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post #2 of 15 (permalink) Old 07-25-2012, 10:44 PM
 
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Sounds like a bad ground somewhere but where to start. Viper 238 Travis may have some answers. Good luck.

Such is life. Just passing through.

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post #3 of 15 (permalink) Old 07-25-2012, 11:12 PM
 
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post #4 of 15 (permalink) Old 07-30-2012, 03:53 PM Thread Starter
 
Join Date: May 2009
Location: Richmond Ontario
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No luck yet

So i have looked at a lot of different stuf over the last few days.
Cleaned and verified all the connections on both batteries. OK
Did a load test on both batteries. OK
Static voltage on both batteries is 12.8 V
When the truck is running both batteries are charging at about 14.8 V at idle.
Brought a megher home from work and verified the ground circuit for the truck is OK
Don't know where to look next???
Anybody have any ideas?
Thanks
rob
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post #5 of 15 (permalink) Old 07-31-2012, 06:08 PM
 
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You verified all of the ground circuits? With a megher?!!! Use an ohm meter. It's safer for your electronics. Check the engine to cab ground strap? Pulled apart the under dash and checked those grounds? Check the fuses/circuit breakers for oxidation or looseness, under the dash and the hood.

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post #6 of 15 (permalink) Old 08-01-2012, 05:53 PM Thread Starter
 
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Yes, i used a megher, but it is one that is used specifically for 24 V dc circuits, so i was not worried about it damaging any electronics.
i have ohmed everything that i can see without tearing the entire dash out of the truck.
i have pulled every fuse and relay and checked them for continuity and cleaned all their contact points.
Everything seems OK, but I'm still getting intermittant outages of the entire dash cluster, radio and power mirrors.
So i'm just looking for ideas of where to look next?????
Thanks
rob
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post #7 of 15 (permalink) Old 08-02-2012, 08:30 PM
 
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check your starter.....

mine didnt do what yours did and keep running but had the exact same symptems. when I went to start it up after getting fuel it did the same thing only wouldnt start, ended up the starter had shorted out and welded itself solid. Had to have the truck towed.



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post #8 of 15 (permalink) Old 08-10-2012, 09:59 AM Thread Starter
 
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So just some more info for people to think about.
Still working on getting this problem solved.
When all the elctronics power off, I am still able to push the CD eject button on the radio and the CD will eject and go back in on it's own as usual even though the entire dash cluster and the radio is off????......any more ideas fellas.
i'm really reluctantto take it to the dealer and pay them $100/hour to just start changing electronic parts one at a time????......anybody????
thanks
rob
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post #9 of 15 (permalink) Old 08-10-2012, 10:41 AM
 
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I may be way out in left field here Rob but what about a poor contact on a pin in a plug on a wiring harness?

Such is life. Just passing through.

04 F150 FX4 Screw 5.4 with couple of mods
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post #10 of 15 (permalink) Old 08-10-2012, 11:32 AM
 
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Quote:
Originally Posted by indyca View Post
So just some more info for people to think about.
Still working on getting this problem solved.
When all the elctronics power off, I am still able to push the CD eject button on the radio and the CD will eject and go back in on it's own as usual even though the entire dash cluster and the radio is off????......any more ideas fellas.
i'm really reluctantto take it to the dealer and pay them $100/hour to just start changing electronic parts one at a time????......anybody????
thanks
rob
That is normal operation of the radio/CD. I dont think it is related. A quick Google search seems to point to circuits around the battery saver relay circuitry. It's definitely an intermittent of some sort, either power or ground. I know that doesn't help much but you need to some how monitor those circuits starting from the source and then work towards the fault. Hard to explain, but that would be my approach. Lastly, do you have wiring diagrams for your truck?

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Last edited by LOOSEWHEEL; 08-10-2012 at 12:06 PM.
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