Auto Trans Headaches...
02-14-2009, 01:47 PM
#11
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I have been looking in to this. I think the problem is 4th hear or OD is too high of a ratio. When the RPM's are under 3000 the engine does not have enough torque to climb even the slightest hill. It will not unlock the torque converter in an attempt to get better gas mileage. Then when you push the gas hard enough to make it shift, it drops to 3rd and unlocks the torque converter. Its not a nice shift because of the large gear ratio change.
When you get reflashed or a new converter installed it won't lock for so many miles till it goes through the break in cycle.
I don't like what it does but it is designed to work that way. You won't get it "Fixed" at the dealer. There is no way to fix it without a different tranny.
When you get reflashed or a new converter installed it won't lock for so many miles till it goes through the break in cycle.
I don't like what it does but it is designed to work that way. You won't get it "Fixed" at the dealer. There is no way to fix it without a different tranny.
02-14-2009, 03:03 PM
#13
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That's too funny. That's the problem too. All it needs is to allow the converter to unlock at a slightly lower gas pedal pressure that it takes for a downshift. So if its not a really steep hill just unlocking might be enough.
Last edited by derff96963; 02-14-2009 at 03:08 PM.
02-14-2009, 03:45 PM
#14
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I'm BONE stock on everything. The tire size is the factory 255s. The trans is entirely awful and I've owned a LOT of jeeps.
I'm going to ask that they reset the adaptives so I can at least teach it that I drive like a maniac (I don't) and have it at least more apt to shift aggressively.
I'm disappointed that there's no answer... so I guess I'll start working on that lifetime powertrain (at least until Chrysler goes Tits up.).
Thx.
I'm going to ask that they reset the adaptives so I can at least teach it that I drive like a maniac (I don't) and have it at least more apt to shift aggressively.
I'm disappointed that there's no answer... so I guess I'll start working on that lifetime powertrain (at least until Chrysler goes Tits up.).
Thx.
02-14-2009, 04:01 PM
#15
JK Jedi
I have been looking in to this. I think the problem is 4th hear or OD is too high of a ratio. When the RPM's are under 3000 the engine does not have enough torque to climb even the slightest hill. It will not unlock the torque converter in an attempt to get better gas mileage. Then when you push the gas hard enough to make it shift, it drops to 3rd and unlocks the torque converter. Its not a nice shift because of the large gear ratio change.
When you get reflashed or a new converter installed it won't lock for so many miles till it goes through the break in cycle.
I don't like what it does but it is designed to work that way. You won't get it "Fixed" at the dealer. There is no way to fix it without a different tranny.
When you get reflashed or a new converter installed it won't lock for so many miles till it goes through the break in cycle.
I don't like what it does but it is designed to work that way. You won't get it "Fixed" at the dealer. There is no way to fix it without a different tranny.
I wonder if I higher gear ratio such as 4:10 or 5:13 may help?
Between this and the clunky steering, it makes for a crappy driving experience.
02-14-2009, 04:09 PM
#17
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02-14-2009, 05:00 PM
#18
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02-15-2009, 07:56 AM
#20
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One of two reasons in my estimation...........
1) Making this trans shift correctly would involve letting the engine rev higher before it shifts and allowing it to downshift much earlier than it does. This would greatly affect mileage and therefore Chrysler's ability to meet federal CAFE standards.
2) Working the trans harder than the current shift points allow would adversely affect the life expectancy of this transmission.
Now that I think about it, it's probably both.
1) Making this trans shift correctly would involve letting the engine rev higher before it shifts and allowing it to downshift much earlier than it does. This would greatly affect mileage and therefore Chrysler's ability to meet federal CAFE standards.
2) Working the trans harder than the current shift points allow would adversely affect the life expectancy of this transmission.
Now that I think about it, it's probably both.