Calgary Jeep Association

Author Topic: Speed sensor question  (Read 1506 times)

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Offline 5speedcobra

  • Winch Wench
  • Posts: 36
Speed sensor question
« on: May 06, 2013, 12:14:32 PM »
I recently replaced the transfer case in my 98 XJ with another 98ish one.. I noticed that the speed sensor that came with the transfer case had a different connector than mine, and much larger gear on it. I put my speed sensor into the new transfer case, and everything is running good, EXCEPT that my speedo is showing me 107km/h at when I'm actually only doing 100km/h

I'm guessing the new transfer case has different number of teeth or something? Anyone had this problem before?

Thanks!

Cris
98 Jeep Cherockee XJ : my very first jeep, stock for now...
87 Dodge Daytona Shelby-Z : AKA "The Mistress" ;  12.5 @ 113mph
08 Cadillac CTS : The money maker

Offline Dingleberry

  • UberWheeler
  • Posts: 450
Re: Speed sensor question
« Reply #1 on: May 06, 2013, 03:47:32 PM »
Sounds like the tcase you put in likely came from a Jeep with different gear ratio in the diffs perhaps? Therefore it would need a different tooth count in the speedo gear.
Take a peek at this handy chart to help decipher what tooth count speedo gear you need:
http://www.quadratec.com/jeep_knowledgebase/article-46.htm

Offline Bnine

  • Talks waaay too much!
  • Posts: 2572
  • Sticky Fingers
Re: Speed sensor question
« Reply #2 on: May 09, 2013, 08:30:36 AM »
Should keep you from getting many speeding tickets.

Or just put 31's or 32's on and it will be in sync again. lol
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