Hello, all - My first post.
We're looking at a 2012 Coachmen Concord 300 TS, well cared for. Yet, in a test drive, it had no power whatsoever climbing a highway grade (a long hill, not a mountain). Couldn't kick it even to 50 mph. Lots of noise and engine strain. A diagnostic showed no problems. Service tech drove it and basically said the engine is what it is. Chassis is a Ford E-450 SD V10 6.8L, 305HP, with just under 50K miles.
Hard to imagine driving this over mountains, or even towing a Jeep. We also test-drove another rv (new-2015, same size and weight, same engine) and it took the hills quite nicely.
Do other Concord owners have the same lack-of-power issue?
Is it likely that other 2012 Concords will exhibit the same problem, or might this be unique to this unit (meaning, there's a problem not showing up on the diagnostic)?
Would it have to do with the 2-valve engine (as opposed to the 3-valve typical in class A gassers)?