Bouncy Speedo needle - Page 2 - JeepForum.com

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post #16 of 24 Old 09-12-2013, 11:06 PM
pcoplin
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No, you would have to bring it to a speedo shop to gauss/degauss after rebuild.

You can check it by pulling it and lightly clamping a power drill onto the back and running it slowly up. It was very easy to reproduce my problem with the drill.

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post #17 of 24 Old 09-13-2013, 08:26 PM
jkwheels
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My speedo doesn't bounce but speedo cable is noisy. Do I have to disconnect from behind the speedo under dash at back of instrument panel? Do I take off both ends or just one and pull out? Is one end easier then another?

Any thoughts are appreciated

Thanks
JkW
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post #18 of 24 Old 09-13-2013, 08:27 PM
jkwheels
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Noisy speedo is on my 89 grand wagoneer
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post #19 of 24 Old 09-14-2013, 08:59 AM
pcoplin
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If you have cruise you would have to remove two inner cables. There's an electronic sensor at the left inner fender.
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post #20 of 24 Old 09-14-2013, 12:41 PM Thread Starter
usererror
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Quote:
Originally Posted by pcoplin View Post
No, you would have to bring it to a speedo shop to gauss/degauss after rebuild.

You can check it by pulling it and lightly clamping a power drill onto the back and running it slowly up. It was very easy to reproduce my problem with the drill.
Awesome idea. Thanks!!
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post #21 of 24 Old 09-17-2013, 09:29 PM
billy_YJ
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Originally Posted by usererror View Post
Awesome idea. Thanks!!
Sounds like you are chasing down the same problem I had with my Woody. After replacing both speedo cables I ended up replacing the speedometer itself with a lightly used one from ebay. Check out my thread...
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post #22 of 24 Old 10-20-2013, 12:47 PM Thread Starter
usererror
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Well, I am happy and pissed all at the same time. While removing the cluster I managed to crack the clear plastic cover of the cluster. So now i'll be looking for probably whole new cluster regardless.

I am happy to say that when I attached my drill motor to the brass/copper fitting on the rear of the cluster the needle does bounce as it does while driving. I tried attaching my drill just to the speedo cable but it didn't move the needle at all.

What should my next steps be? Replace / repair the speedometer needle assembly?

It appears that if I play with the needle by hand I can make it 'get stuck' in a certain position. It almost as if the 'disc' in the center is making contact or getting stuck on the two outer "C" shaped pieces. Does this need to be lubed? They can be seen in the picture below.

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post #23 of 24 Old 10-22-2013, 10:51 PM
billy_YJ
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I would replace the whole cluster with a known working speedo. Also, replace all your bulbs so you don't have to go back in the dash.
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post #24 of 24 Old 10-26-2013, 11:44 AM Thread Starter
usererror
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Success! The new instrument cluster's Speedometer assembly works. I switched out the odometer dial from my old one as well. Pretty interesting that if you run the speedometer backwards when disconnected from the car, it will drive the odometer counter backwards.
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