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07 5.9 starting issue

573 Views 3 Replies 3 Participants Last post by  GRUNT 11B, 
HOOCH
So I have a 2007 5.9 Mega cab with the 5.9 auto & 230k. Bone stock it’s whole life.

Anyways, I just bought the truck and noticed it was slow starting in the mornings. I replaced both batteries and it started normal. Soon after I noticed that the first start in the AM, the truck cranks over a few times then completely cuts out (like you let the key go) and stops, then begains cranking over again. It’s had the p2509 code since this started. I then went out of town for 3 days and came home to a dead truck. Had to jump it before it would start again. The volt meter in the truck shows well over 14 volts when running.

Please any help will be appreciated. I have run out of options.
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GRUNT 11B
here is how i got and fixed that code. i also have listed some things in there that you can check as well.
https://www.cumminsforum.com/forum/3rd-gen-non-powertrain/2295690-p2509-fix.html
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