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Discussion Starter #1
I have recently been having trouble starting my truck when it is cold out, to the point it will kill my batteries to the point where I need a jump. This only started happening after I starting plugging it in for the night. The last two winters I never plugged it in and had no problems what so ever. I recently changed the oil/oil filter and both fuel filters (thinking maybe there was some water in the fuel. A guy I work with suggested that maybe it could be the fuel injection control module which is quite expensive and I want to make sure first. If I plug the truck in over night it seems to start no problem but I can't always plug it in... Any suggestions?
 

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First, take the batteries out of your truck and run them down to the local auto parts store. Ask them to load test them for you. Replace them as a set if either of them test marginal or fails.
When you get home, place the batteries on a battery charger and get them up to a 100% charge, even if they are new.
Before dropping the batteries back in, clean the connectors and check over the cables.
Next, you will need a helper and a multi-meter to check the FICM voltage.
Do this test with the engine cold, and don't have it plugged in.
CLICK HERE for a good write-up on how to check your FICM voltage.
The reason for checking the batteries is that weak batteries can kill a FICM. You don't want to repair a FICM and drop it in and have the weak batteries eat it all over again.

I would bet that your FICM is gone and needs to be repaired. Check out ficmrepair.com
 

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"resident smarty pants"
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A FICM issue is about $300 for the repair (I second the FICMrepair.com recommendation) - you almost certainly would not need a new one.
 

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loud and long
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567 Posts
Have u checked ur glow plugs?????
 
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