2008 Discovery w/350 Cummins check engine!
I have a (new to me this season) 2008 Discovery with a 350hp Cummins and on a longer grade the check engine! comes on and then it will go back off on its own a short time later, after it’s not pulling...
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Our 350 did that too, turned out to be a low fuel pressure, a filter change cured it.
