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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FWIW: My V10 Class C's 2005 TorqShift 5R110 transmission failed completely in August of this year after only about 51,000 miles on the RV.
I started to notice something was wrong for a few months by it acting about like what the OP described. Of course near the end in August it did a whole bunch of additional weird things. My mechanics have no idea of why the normally robust Ford 5R110 transmission should fail that soon.
There's only one thing I can put my finger on that may have caused it to fail so soon. Our home lies in the mountains at the end of a moderate-grade long uphill pull and then a steep-grade short uphill pull. After arriving home with the RV I merely shut the engine off. Perhaps the transmission is hot after pulling these grades to our house and I should be idling the engine for a few minutes after arriving home to cool the transmissions down? I've never read anything about doing this .... so am just wondering. Perhaps the OP has the same situation and their transmission is beginning to show early signs of damage.
I started to notice something was wrong for a few months by it acting about like what the OP described. Of course near the end in August it did a whole bunch of additional weird things. My mechanics have no idea of why the normally robust Ford 5R110 transmission should fail that soon.
There's only one thing I can put my finger on that may have caused it to fail so soon. Our home lies in the mountains at the end of a moderate-grade long uphill pull and then a steep-grade short uphill pull. After arriving home with the RV I merely shut the engine off. Perhaps the transmission is hot after pulling these grades to our house and I should be idling the engine for a few minutes after arriving home to cool the transmissions down? I've never read anything about doing this .... so am just wondering. Perhaps the OP has the same situation and their transmission is beginning to show early signs of damage.
