ECODIESEL DIFF RE-GEARING

[drick]

That's what I would go with. I'm at 45k miles with 4.56's. I would do it again in a heartbeat. We live at altitude in Colorado and tow an off-road trailer quit frequently.

thanks for confirming

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[Ratbert]

maybe this is another one of those things where i've just been lucky?
i don't seem to have experienced any such aberrant behavior (yet!).

How does yours behave when climbing / cresting hills?

 

[zouch]

it pulls uphill at whatever speed i set, and rolls out of the pull as the load decreases; whatever it needs to do to maintain speed. nothing unusual; just what it's supposed to do. (i don't remember my Quattro being much different.)

How does yours behave when climbing / cresting hills?

 

[Ratbert]

it pulls uphill at whatever speed i set, and rolls out of the pull as the load decreases; whatever it needs to do to maintain speed. nothing unusual; just what it's supposed to do. (i don't remember my Quattro being much different.)

Interesting. I noticed it a lot more when driving home last night loaded down with people. Definitely had to cut it off at the crest of hills to keep it from "launching".

 

[drick]

Interesting. I noticed it a lot more when driving home last night loaded down with people. Definitely had to cut it off at the crest of hills to keep it from "launching".

FWIW - this happens to me all the time, not just when loaded

 

[ALeeL]

cruise control for me is fine on the flats, on hills it bangs all over through the gears and significantly over revs the engine vs. what is needed.

this behavior coupled with the overheating problems is a recipe for disaster

Same here. Without cruise control, I can go up just about anything in 8th. The exact same hills and speed on cruise control will cause it to slow down one to two mph going up the hill, then downshift a gear or two to compensate for the cruise control letting the Jeep loose speed. This happens even with my 50hp/100 lb-ft tune, and has nothing to do with power, but rather how the CC was programed.

Most Jeep diesel owners I spoke with about this, who have never had diesels, generally don't notice since they are used to this with gas engines and don't see an issue. However, most that have owned diesels before and are used to their diesels not having to downshift on such a low grade are the ones that are very annoyed by it.

I just put in manual mode in 8th gear while on cruise control past 55 mph. Last trip to Moab, it took every mountain like this aside from a very long and steep one that required downshifting to 7th at 2,100 rpm. That same mountain had my buddy, who was following me in his 3.6L 8-speed, downshift to 4th screaming at 4,600 rpm.

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