SLASH Posted July 16, 2010 Report Share Posted July 16, 2010 My 2010 journey downshifts while going down hill when on cruise. the engine gets up to 5500 rpms on large hills. It seems to be trying to slow itself down. Anyone else have this problem. Quote Link to comment Share on other sites More sharing options...
Deckster Posted July 16, 2010 Report Share Posted July 16, 2010 Mine does the same, I usually just "cancel" the cruise when that happens and "resume" at the bottom of the hill. Quote Link to comment Share on other sites More sharing options...
SLASH Posted July 16, 2010 Author Report Share Posted July 16, 2010 Mine does the same, I usually just "cancel" the cruise when that happens and "resume" at the bottom of the hill. Even if cancelled I have to slow down by applying breaks before it shifts back up. Quote Link to comment Share on other sites More sharing options...
BUGS Posted July 16, 2010 Report Share Posted July 16, 2010 The cruise control is trying to keep to the speed that you set it to. To do so the CC does not have the option to brake so it uses engine compression to slow it and this requires a downshift sometimes. Quote Link to comment Share on other sites More sharing options...
jaymista Posted July 18, 2010 Report Share Posted July 18, 2010 There might be a difference too depending on the size of your engine. The 3.5 will go up hills a bit better than the 2.4. Quote Link to comment Share on other sites More sharing options...
Elwood011 Posted August 5, 2010 Report Share Posted August 5, 2010 That is interesting; I live in flat country so I haven't seen this yet. I wouldn't necessarily call this a problem, though. Downshifting while going down steep hills is better than riding your brakes. If you are talking mountain driving, it probably would be best not to use cruise control at all. Maybe the transmission is more sensitive to noticing when the momentum of the car is pushing faster than the engine, and therefore it should downshift. This is also the first 6-speed auto I have ever owned, so maybe they are a bit different as well. I don't know. Quote Link to comment Share on other sites More sharing options...
micaxe Posted August 6, 2010 Report Share Posted August 6, 2010 I've got an SXT 2.7,V6, 6sp auto, it's the cruise trying to keep speed down by downshifting, sometimes I will manually select 5th to save transmission "hunting" between 5th+6th, also helps with keeping speed downhill, by changeing down before hill. 6th seems to be good for dead flat running, soon as you accelerate a bit, it unlocks + revs the same as locked 5th anyway. Hope this helps. Quote Link to comment Share on other sites More sharing options...
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