3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

had a hard start, P2509, P2609

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Old 01-24-2008, 05:33 PM
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had a hard start, P2509, P2609

Well,

Hopefully this isnt "here we go again" since I have gone another 3000 miles since going to the dealer. Started the truck this afternoon, not too cold, about 30 degrees out. It started hard with a funny noise and immediately threw P2509 and P2609. Seems to be running fine and only had one other funny start... I think..paranoid now. Anyway, if you accidentally bump start it a little can you cause that? My grid heater seems fine? Maybe I left some accessories on and the battery went down a little? Only difference lately is I have had a redneck winter front on (Piece of cardboard with hole in the middle next to radiator. What do you think? Also have not been running smarty jr too long and only running it on 70hp setting.
Old 01-24-2008, 08:19 PM
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TSB 18-001-07 is an ecm flash for those codes & improved charging system operation.But your vin might get "tagged" if they see evidence of the Jr in the ecm
Old 01-25-2008, 08:49 AM
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Found the problem

Hi guys,
thought I would update so others who get the codes may find the info. My dealer had not tightened either of the negative battery cables when I last took it in. both nuts spun easily. Thats what threw the voltage off and threw the codes. CEL has turned off on its own.
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