speedo jumping and sometimes quits? - JeepForum.com

 
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post #1 of 5 Old 12-08-2005, 05:33 AM Thread Starter
02Lightning
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speedo jumping and sometimes quits?

Anyone have any experance with this? Think this would be a speed sensor? If so can I just buy a new one and put it in or would I need to know what trans I have. Also how do I identify what trans I have? Thanks guys.


1995 Jeep Grand Cherokee Limited 4.0L NP249 Transfer Case, 42RE, 212,000 miles
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post #2 of 5 Old 12-08-2005, 05:35 AM
Texas ZJ1
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I would highly recommend you pick up a Haynes or Chilton's repair manual from the local auto parts store.

You'll be able to see and read exactly how to replace or repair your speed sensor.


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post #3 of 5 Old 12-08-2005, 05:37 AM
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I would bet its the speed sensor. A Chilton or Haynes manual should show the exact location of the speed sensor, it's easy to change, it bolts right into the tranny. Just watch out for any fluid that may leak out. Best to do it when the car is cold.

You can always get a build sheet for your Jeep, it will tell you what tranny you've got.

I had the speed sensor go in my '93 a long time back, right before I sold it. It did the same exact thing you're describing. It's a fairly common problem with GC's, if I'm not mistaken.

2001 Jeep Grand Cherokee Limited 4.7L Selec-Trac: 2" Fat Bob's/BDS Coil Lift, Bilstein 5100 Monotubes, JKS Quick Discos, Rough Country 2.2 Steering Stabilizer, OEM Tow Hooks, Kenwood Excelon KDC-X890
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post #4 of 5 Old 12-08-2005, 07:53 AM
wmm_16
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My wife's Caravan had the speed sensor go bad, it was acting like that then it went into "limp" mode. That was a pain!

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post #5 of 5 Old 12-08-2005, 09:47 AM Thread Starter
02Lightning
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Cool! Thanks guys!

1995 Jeep Grand Cherokee Limited 4.0L NP249 Transfer Case, 42RE, 212,000 miles
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