Does a 06 not have a speedo gear? - Jeep Wrangler Forum
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Old 06-20-2012, 06:02 PM   #1
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Does a 06 not have a speedo gear?

When removing my speedometer gear today (or so i thought) i found that i had no gear at all, but a small, cylindrical, black end to what i pulled out of the housing. Does this automatically adjust the speedometer? Is no gear swap needed? I'm assuming Jeep stopped using the actual gear for this and (at least by 2006) switched over to an electronic speedo sensor? Am i wrong?

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Old 06-20-2012, 06:43 PM   #2
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NP231 Transfer Case in 2006 Jeep Wranglers has a speedometer gear.

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Old 06-20-2012, 06:50 PM   #3
Knows a couple things...

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Only Rubicons don't have a speedometer gear.
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Old 06-20-2012, 06:53 PM   #4
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Just had the gear changed out on my 06. Almost 10 mph off at 50 with the 33's on there.
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Old 06-20-2012, 08:25 PM   #5
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My Dad changed his gear on his 06' when we did the SYE....at 73 years young he didn't want to be caught speeding with his 4" lifted TJ with 33's .
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Old 06-20-2012, 11:10 PM   #6
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the original transmission isnt in the jeep...all i know is that it was replaced at a jeep dealership before i bought it....on the back of the t case today i noticed the model said 231 J..... in the morning i will take pictures of everything
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Old 06-20-2012, 11:44 PM   #7
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You did go looking for the speedometer gear on the transfer case, right?
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Old 06-21-2012, 09:07 AM   #8
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Old 06-21-2012, 09:24 AM   #9
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Interesting.

My '05 231J, and a factory '06 231J, should appear as pictured in this thread:

http://www.wranglerforum.com/f105/sp...ge-121033.html
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Old 06-21-2012, 09:32 AM   #10
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I just called the p.o. to confirm and he assures me that the transfer case is the original.

Could it being right hand drive have anything to do with it?
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Old 06-21-2012, 01:38 PM   #11
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Wikipedia says that RHD models were only available with automatic, so maybe that would make them use a different t case then what they would use for the regular ones? I'm stumped
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Old 06-21-2012, 01:39 PM   #12
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Quote:
Originally Posted by div4gold View Post
You did go looking for the speedometer gear on the transfer case, right?
yes, i just mentioned the trans being replaced because i thought maybe they put on a different t case when reinstalling it....but the p.o. said its the original
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Old 06-21-2012, 02:42 PM   #13
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you have a Short Slip Yoke Eliminator with a Double Cardan Shaft.

Tera Flex Extreme Short SYE Kit Combo With TW Drive shaft
Teraflex 4444400 - TeraFlex 231 Extreme Short Shaft Kit for NV231-J Transfer Cases - Quadratec

That speedometer works with a tone ring. You will need an electronic recalibration method....such as Speedohealer, Yellow Box, Dakota Digital, Superlift TruSpeed, or other. That's just what I remember off the top of my head...but there are a bunch more wire-in recalibration units that will work.
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Old 06-21-2012, 03:32 PM   #14
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Quote:
Originally Posted by UnlimitedLJ04 View Post
you have a Short Slip Yoke Eliminator with a Double Cardan Shaft.

Tera Flex Extreme Short SYE Kit Combo With TW Drive shaft
Teraflex 4444400 - TeraFlex 231 Extreme Short Shaft Kit for NV231-J Transfer Cases - Quadratec

That speedometer works with a tone ring. You will need an electronic recalibration method....such as Speedohealer, Yellow Box, Dakota Digital, Superlift TruSpeed, or other. That's just what I remember off the top of my head...but there are a bunch more wire-in recalibration units that will work.

DUHHHHH
ill be picking one up shortly then
thanks as always

since i did not install the sye kit i did not think to consider that the gear would be changed out when doing that conversion
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Old 06-21-2012, 08:25 PM   #15
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Quote:
Originally Posted by UnlimitedLJ04 View Post
you have a Short Slip Yoke Eliminator with a Double Cardan Shaft.

Tera Flex Extreme Short SYE Kit Combo With TW Drive shaft
Teraflex 4444400 - TeraFlex 231 Extreme Short Shaft Kit for NV231-J Transfer Cases - Quadratec

That speedometer works with a tone ring. You will need an electronic recalibration method....such as Speedohealer, Yellow Box, Dakota Digital, Superlift TruSpeed, or other. That's just what I remember off the top of my head...but there are a bunch more wire-in recalibration units that will work.
I've been here a very short time, but it's obvious to me that you know everything about jeeps

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