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Old 09-13-2022, 10:06 PM   #1
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Brand: Thor Motor Coach
Model: Sequence 20L
State: California
Posts: 20
THOR #26422
ProMaster van downhill braking

On our trip to Iowa and Oregon, I noticed a feature in the van when coasting (in gear) downhill, the transmission down shifted very similar to our old pac-break in our Endeavor. This kept the van at a lower speed without any driver intervention and disconnect when we reached level ground.
Don't know how this works or the details but it seems as if there is no "off" switch like the Cat diesel.
Bob Lundin

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Old 09-14-2022, 02:52 PM   #2
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Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
Not sure of your design but, when cruise is engaged my transmission will downshift to keep coach at the speed set on cruise. Alternatively I can use the exhaust break if not in cruise. Was your cruise engaged?
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Old 09-14-2022, 03:10 PM   #3
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Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,767
THOR #1469
Iíll bet your owners manual can tell you all about the feature.
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Old 09-14-2022, 05:45 PM   #4
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Brand: Thor Motor Coach
Model: 2022 Tellaro 20L
State: Pennsylvania
Posts: 42
THOR #25231
The RAM Owner's Manual discusses this. It's always on.
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