Clunk when downshifting pulling trailer
I noticed that twice this past week my 09 Ford did some type of clunk when it was in tow/haul mode and I was pulling a 20ft. trailer weighing in around 4K pounds. It only did it when I was barely ...
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Downshifted, as in you were slowing down? Or upshifted, as in you were speeding up and it went from first to second? I wouldn't expect any significant clunk on a downshift at those speeds, as there's unlikely to be any significant strain on the drivetrain components—you're using your brakes, most likely.
Is it possible that perhaps what you're sensing is a bit of slop in the trailer hitch bouncing around as the trailer brakes (assuming you have trailer brakes of some sort) and engine braking and motorhome brakes all interact in various ways? Certainly not the only option, but seems like a reasonable possibility to me.
I'm not aware of many if any class C's with locking rear wheel differentials. I may simply be ignorant, but it doesn't seem like a usual option. My '98 certainly has a standard non-limited-slip differential, as I have once or twice found out somewhat to my chagrin.
Is it possible that perhaps what you're sensing is a bit of slop in the trailer hitch bouncing around as the trailer brakes (assuming you have trailer brakes of some sort) and engine braking and motorhome brakes all interact in various ways? Certainly not the only option, but seems like a reasonable possibility to me.
I'm not aware of many if any class C's with locking rear wheel differentials. I may simply be ignorant, but it doesn't seem like a usual option. My '98 certainly has a standard non-limited-slip differential, as I have once or twice found out somewhat to my chagrin.
