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Unread 02-06-2014, 02:29 PM   #1
LRod
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06 Rubicon Speedo Bouncing

Been going over "Bouncing Speedo" in Search and haven't come up with one solution to my problem, more like ideas of what it could be, like crank position sensor, speed sensor, wheel sensor, loose wires, dirty elect. connections, frayed wires and none for a 06 TJ. My speedo bounces around 40+ mph and faster. Any body with a similar problem?

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Unread 02-06-2014, 04:30 PM   #2
CharlieHo
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I, don't have a problem with mine, but, I remember reading something in my JB Conversions SS SYE about that.

Check that the sensor on you TC output housing is not loose or something dumb.
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Unread 02-06-2014, 05:27 PM   #3
LRod
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thanks for the reply Charlie I've messed with just about everything except changing out the cluster circuit board, so I guess that's the next step. Although it may be a combination of circumstances??
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Unread 02-06-2014, 09:21 PM   #4
JPNinPA
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Check this

http://www.stu-offroad.com/engine/speedo/speed1.htm
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Unread 02-06-2014, 09:41 PM   #5
bondosgto
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If you have a rubi, you have an electronic speed sensor I do believe. So I would check out the blue monkey set-up.
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Unread 02-06-2014, 10:23 PM   #6
LRod
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I have a 06 Rubicon with an electronic sensor, it different than the one shown. I didn't want to make this a long story but... about a year ago, the pin that holds the "Tone" ring in place on the output shaft popped out of place and got between the ring and sensor. It dented and pushed the sensor out of the housing and blew ATF under the jeep. When I got home I pulled the tailcone and replaced the pin with the same tone ring. It all worked great till about a week ago when the needle started bouncing. The tone ring has a nick in it, but has worked ever since. I've cleaned the contacts on the cluster board plugs, and "Silver" screws that connect the board to the actual gauges, switched speed sensor on the tranny, reset computer, checked for 5v at the socket by the speed sensor, cleaned the grounding connections under the LH speaker cover, so far. It has gotten better , in that it doesn't start bouncing till it gets to 40mph. Have I missed anything other than replacing the gauge cluster circuit board?
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Unread 02-07-2014, 06:25 AM   #7
JPNinPA
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Quote:
Originally Posted by bondosgto View Post
If you have a rubi, you have an electronic speed sensor I do believe. So I would check out the blue monkey set-up.
True! Didn't catch that.
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Unread 02-07-2014, 12:09 PM   #8
LRod
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Quote:
Originally Posted by bondosgto View Post
If you have a rubi, you have an electronic speed sensor I do believe. So I would check out the blue monkey set-up.
"Blue Monkey" ?????
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