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Old 06-25-2016, 08:43 PM
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Join Date: Jul 2012
Posts: 1
Default Acceleration issue

I have a 2007.5 6.7L with 108,000 miles on it and the only thing to ever go wrong was the water pump and that was covered under warranty years ago.
My current issue is an intermittent problem and I'm curious if anyone else has had this problem.
Occasionally when I begin to accelerate the motor bogs down and it sounds like the exhaust brake is on ( the switch is off) so I reduce my throttle input and then reapply throttle and accelerate and the problem clears up. Any ideas out there?
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Old 06-26-2016, 08:16 AM
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Join Date: Oct 2012
Location: saskatchewan
Posts: 279

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Either your egr valve is sticking open a bit or the throttle valve that works with your egr system is closing. When the throttle valve closes it creates vacuum behind it so the egr gasses get sucked in to the engine.

With the engine off unplug the egr valve . It will put the check engine light on but the egr will stop recirculating.
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]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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