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Weird electrical problem

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Old Dec 8, 2010 | 09:18 AM
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Weird electrical problem

This midwest freeze is doing some weird stuff to my truck. Twice now I have started at 7f (minus 10c)with no problems. But my heater blower and turn signals don't work. Then after an hour of running if I turn it off and back on again they start working! This is the second time this has happened in four days.
 
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Old Dec 8, 2010 | 10:50 AM
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First things that come to mind is a reset signal going to the ecu that it is not receiving, can you shut it of after 15 or 20 minutes and start it back up to fix the problem or only after an hour?
 
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Old Dec 8, 2010 | 11:15 AM
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Does the Key switch return to center when you let off of it? It sounds as if the switch is sticky when cold, and not letting it go back to center.
 
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Old Dec 8, 2010 | 11:16 AM
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Originally Posted by DieselScoff
First things that come to mind is a reset signal going to the ecu that it is not receiving, can you shut it of after 15 or 20 minutes and start it back up to fix the problem or only after an hour?
Thankfully there is no ECU on an IDI
 
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Old Dec 8, 2010 | 11:19 AM
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Originally Posted by farmert
Does the Key switch return to center when you let off of it? It sounds as if the switch is sticky when cold, and not letting it go back to center.
This sounds feasible. LOL its usually the obvious thing that I miss. I will check that in the morning again when shes stone cold.
 
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Old Dec 8, 2010 | 11:21 AM
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Check the fuses first.....#6 30 amp.....heater

Then check the turn signal relay in the fuse box..... could be cold/heat related.
 
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Old Dec 8, 2010 | 11:37 AM
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Originally Posted by PLC7.3
Check the fuses first.....#6 30 amp.....heater

Then check the turn signal relay in the fuse box..... could be cold/heat related.
Can't see it being fuses related otherwise it wouldn't have started working again
 
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Old Dec 8, 2010 | 03:46 PM
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Originally Posted by farmert
Does the Key switch return to center when you let off of it? It sounds as if the switch is sticky when cold, and not letting it go back to center.
I'll second this.
Does the radio or other accessories have the same problems? I've noticed it a few times when the radio didn't come back on after starting (on while waiting for glow plugs, then off during cranking). Wiggle the key and its all good.
 
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