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Old 04-21-2010, 05:01 PM   #1
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Manual shifter shake !

Hi,
I might have asked a while back. Just came back from a trip to Death Valley.
09' Wrangler 2 door with manual 6 speed. When going over rough washboard trail at 15 / 20 miles per hour, in second or third gear, the shifter will shake really hard ( 6-7 inches sideways and no way you can hold it !!! ). The car works perfect, doesn't jump out of gear and troupers all the way to where i want to go.
It is just that that much shaking seems a bit too much for my liking. I know the powertrain is isolated from the body.
I have to bring it in tomorrow and they will check that no motor / transmission mounts are loose or broken.
What do you think ? Do you have the very same experience over rough terrain ?

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Old 04-21-2010, 06:35 PM   #2
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This is what a manual transmission shifter lever will do.. Keep in mind this shift lever is not that short..Once engaged into a given gear, the shift lever end in the shift tower rides in the selected shift rail and there is some free play which is absorbed by a spring load.. However riding over a bumpy road will move the shift lever knob end quite violently and this move will override that small preload/spring load and the visible shake will start...
As long as you don't hear other funny noises it should be OK..
Most of the time, I keep my hand on the shift lever one I go over bumpy roads....

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Old 04-22-2010, 06:41 AM   #3
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My shifter shakes a pretty good amount too. It has kinda freaked me out but I've grown used to it now. I guess it's another jeep thing.
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Old 04-22-2010, 08:05 AM   #4
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Old 04-22-2010, 11:00 PM   #5
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Thanks for the replies. The dealer didn't find anything wrong with anything.
I guess driving a bit fast on very rough ground will shake that stick !!!
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Old 06-10-2012, 12:54 PM   #6
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I too have severe shift lever shake on my brand new JKU Rubicon. I think that the answer "its a jeep thing" is wearing a bit thin. I have owned 4x4s for the last 40 years (4Runner, Tacomas, FJ 40 Landcruiser, Willys, etc.) and haven't had this issue (this bad) before. I don't believe that using the Jeep name is an excuse for bad engineering. Having this much shake can't be good for the transmission or motor mounts, much less the safety of not being able to grab it to shift.
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Old 06-10-2012, 01:36 PM   #7
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You got it frogonwheels, washboard at certain speed will cause a lot of shake. I don't usually have any issues holding or shifting. Every Jeep I have had has done this with no issues or anything else. Saying it is a Jeep thing has no bad connotations tagged to it.

Sorry, but every time I see something that someone thinks is not a normal thing and then call it bad engineering is silly. There are many items in life that do things or react in a way a lot of people think is not right, but are doing exactly what they are supposed to. It is lucky that most people can't see them.

Dr RockJock If in your opinion you think the other 4x4's you have had over the years are better engineered, then why go with Jeep at all?
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Old 06-10-2012, 01:39 PM   #8
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My 2000 tj did and so does the 2012 jk, its the norm. The jk shakes pretty good just going over bumps in the road.
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Old 06-10-2012, 02:01 PM   #9
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Quote:
Originally Posted by Dr RockJock View Post
I too have severe shift lever shake on my brand new JKU Rubicon. I think that the answer "its a jeep thing" is wearing a bit thin. I have owned 4x4s for the last 40 years (4Runner, Tacomas, FJ 40 Landcruiser, Willys, etc.) and haven't had this issue (this bad) before. I don't believe that using the Jeep name is an excuse for bad engineering. Having this much shake can't be good for the transmission or motor mounts, much less the safety of not being able to grab it to shift.
FJ40, Willys? Are you sure your memory is accurate?
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Old 06-10-2012, 02:43 PM   #10
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Every manual transmission equipped vehicle I have owned had the shifter shake. Some more than others but they they all shook just the same.
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Old 06-10-2012, 03:15 PM   #11
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With stiffer springs and good shocks my shifter shakes less than it did stock.
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Old 06-10-2012, 06:40 PM   #12
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My Daihatsu Rocky didn't shake much at all. I got puzzled when my brand new truck drove over pothole and manual shifter almost hit me. But I don't have time all people here have, so I will drive it until it falls apart. It can be soon, though. If that happens, I will "grey-import" Daihatsu and enjoy it once again.
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Old 07-30-2013, 08:54 AM   #13
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My '12 JKU shakes like crazy to the point that my friends with manuals even joke on it when they ride with me. My '03 TJ didn't shake any where near as much as this one. It seems to me that either the drivetrain mounts are softer and causing more movement or that there is more flexibility in the shift linkage then the older jeeps; i don't know just trying to think of stuff that would cause it.
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Old 07-30-2013, 09:46 AM   #14
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The shake is totally normal, it's just more pronounced on the jeep because the shifter is so long.
you also really shouldn't make a habit of holding on to the shifter while you are driving. You will actually inhibit its movement which can cause premature wear on your transmission.
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Old 07-30-2013, 12:07 PM   #15
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Also this stick goes right into the transmission, which is not the case for most of the other vehicules, where they use rigid or cable linkages.
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Old 07-30-2013, 12:15 PM   #16
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2013 JKR 6 speed here and it also has a very scary shake when going over un-even roads. I don't like it because I was not used to this type of "Jeep thing" but now, I guess I have accepted it as part of the territory
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Old 07-30-2013, 02:50 PM   #17
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Quote:
Originally Posted by USAntigoon View Post
This is what a manual transmission shifter lever will do.. Keep in mind this shift lever is not that short..Once engaged into a given gear, the shift lever end in the shift tower rides in the selected shift rail and there is some free play which is absorbed by a spring load.. However riding over a bumpy road will move the shift lever knob end quite violently and this move will override that small preload/spring load and the visible shake will start...
As long as you don't hear other funny noises it should be OK..
Most of the time, I keep my hand on the shift lever one I go over bumpy roads....
Same here, mine will tend to jump back and forth as well - I just keep my hand on it when on gravel or offroad.
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Old 07-30-2013, 03:08 PM   #18
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I could be just talking out my rear but I think it's just the style of mount that the Jeep uses on the transmission. It shakes pretty good. My Tacomas and FJ manuals were not this violent.

Not an issue to me just something a first time Jeep owner notices coming from other manual transmissions.
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Old 07-30-2013, 03:14 PM   #19
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Also this stick goes right into the transmission, which is not the case for most of the other vehicules, where they use rigid or cable linkages.
This. Direct mechanical connection causes it. Some are worse than others.

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