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  #1 (permalink)  
Old 10-27-2015, 09:04 PM
Junior Member

Join Date: Oct 2015
Posts: 1
Default Lightning bolt light issues

2008 6.7 manual, 4x4, 3500. Showing low voltage fuel pressure sensor, cam sensor, map sensor. Put in new, keep resetting the smarty jr to clear codes, runs fine until lightning bolt light comes back on. Did the obvious, check grounds, plug ins, new batteries etc. Any other suggestions would be greatly appreciated.
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Old 10-27-2015, 11:54 PM
Senior Member

Join Date: Oct 2012
Location: saskatchewan
Posts: 280


take the bolts out of the battery cables and clean them. Also clean the holes they go through. Re assemble with di electric grease and try again. If that didn't work check the battery cables for corrosion swell where the cable goes into the lead clamp. If it is swelled up it may be corroded and giving the computer false voltage signals.

This is why I went to optima batteries in 2011. Had to clean the cables every 6 months.
]2008 laramie 6.7 s&b cai , smarty junior , dpf delete 463000km and counting . 24mpg sold December 2017

2012 laramie 6.7 125000km H&S xrt pro set economy , afe hd momentum CAI 19-22mpg:
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Old 10-31-2015, 11:24 AM
We Hauler's Avatar
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Join Date: Feb 2010
Location: Calgary
Posts: 21
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Don't forget to check sensor wiring in air intake.
98 12 Valve Dually Intense Blue
2007 6.7 C&C Deck Brilliant Black
2010 6.7 M/C Dually Brill. Blck/ Light Greystone
2014 6.7 3500 Dually (The wife's)

In Memory of 2006 5.9 M/C Dually Inferno Red
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Old 11-06-2015, 02:11 PM
Squid's Avatar
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Join Date: Sep 2007
Location: South Central Kansas
Posts: 1,859


Most of the time (at least for me) it's either a battery cable, cable end at the alternator or bad/weak battery.

2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10
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