Paul,
What kind of boost were you seeing when the vibrations and failure to pass 1800 rpm occurred? A turbo that has blown would leave debris everywhere if the case were penetrated and if the case were not penetrated, the parts would be lodged in the blower directly below it and/or tossed through the exhaust and/or intake side of the blower. That would be a MAJOR problem so lets hope for something less Draconian.
My boost which will typically run 24 psi on full throttle would not exceed about 16 psi when my secondary fuel filter was plugged. I suspect that a fuel pump going south would also cause the DDEC to cut back the turbo boost.
Glad you found an inexpensive way to deal with the front furnace. Did they have to remove the coach to get yours out? I haven't found any way to gain access to mine other than removal of the couch OR removal of the laminate couch base.
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