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Re: 2006 int 4400 engine brake issue
Posted to HD/Fleet Forum on 5/7/2012

it is a horton 2 speed, but it has air going to it. I took it in to the dealer today, they said no dtc's are present. they reflashed the ecm. brake works good, but fan clutch is engaged at all times. they said to chk the gnd ckt for the fan air solinoid, if ok... Login to read more.