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2007 5.9 won't crank

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I have a 2007 5.9L and the past couple of days it's acted like the battery was starting to go. ...

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Old 07-16-2016, 12:10 AM   #1 (permalink)
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Age: 27
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Ram Year: 2007
Engine: 5.9L cummins
Default 2007 5.9 won't crank
I have a 2007 5.9L and the past couple of days it's acted like the battery was starting to go. It would start to turn over then stop then keep turning over and fire up. Went back to get in it today after driving it yesterday and it won't do anything. I tried jumping it off with jumper cables and also a jump box but it wouldn't even start to turn over. I checked all fuses and none are blown. I've checked the grounds on the side of the block and the connections on the batteries. Did a load test on the batteries to make sure they were still good. All of that checked out fine, what's getting me is if you turn the key backwards then all of the accessories (radio, pillar gauges) all come on and work properly. If you turn the key forward like you're going to start it, the interior lights go dim or cut off, all of the dash lights go off, the relays behind the main gauge cluster starts flicking back and forth and it doesn't even start to turn over and acts like the batteries are dead but everything works perfectly with the key turn backwards. I pulled the grounds off of the battery to try to reset the computer and the wcm and also pulled the fuses for the wcm and let it sit for 10 minutes before hooking it back up with the same results. I'm completely stumped and would appreciate any input anyone has to try to fix this problem.

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Old 07-18-2016, 02:38 AM   #2 (permalink)
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Ram Year: 2014 4X4 QC Express 6 speed auto 355 differentials
Engine: 5.7 Hemi
Hate that for ya .
Maybe the xsmn shifting position switch is shorting out ?

Try putting it in Nutral and see if she cranks .
My last Dodge had a shift sensor go out on it , but I could start in Nutral , sometimes even in Nutral I'd have to actuate the steering wheel tilt " roughly " a couple times but it would start everytime ...

Last edited by R.L.K.; 07-18-2016 at 02:40 AM.
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Old 08-20-2016, 02:06 AM   #3 (permalink)
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Ram Year: 2003
Engine: Cummins
Can always try to shift through the gears and put it back in park.

Also I had a buddy have a similar issue and it ended up being a bad ground in this harness

2003 Cummins plenty of fuel and plenty of air (11.3 at 123mph at 5800ft)
2002 Cummins 22" Forces on 35" toyos (Sold)
2004 Cummins twin pumps, Compounds, built trans (Sold)
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Old 08-20-2016, 03:40 AM   #4 (permalink)
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Ram Year: 2015
Engine: 3.0 EcoDiesel
Could be your TIPM. It looks like your fuse box under the hood but it also controls the power to just about everything in the truck including cranking the engine over.
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