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Re: 2008 F550 engine speed increase
Posted to HD/Fleet Forum on 10/23/2016 2 Replies

I didn't have time to read through all this but if there is a malfunction in the SEIC system it may help. Q-173 says it applies to 2009 but I suspect a lot of that was on 2008 my as well;

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Afterwards, I did find the one for the 2008 my. Q-162R... Login to read more.

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