99 Dodge 1500 speedometer

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  #1  
Old 12-01-02, 02:44 PM
tsdje
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99 Dodge 1500 speedometer

Speedometer does not register until 30mph. Below 30 just bounces around - any ideas
 
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Old 12-12-02, 03:13 PM
biere
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This sounds like it might be a manual gear type cable and it is worn or not tight or something. Even some of the electronic ones simply screw in and can get loose and funky.

Basically if it works, I would check it for loose connections or maybe somewhere it is rubbing and worn through a bit or something.

Now if there was no cable this would all be electric, but I have never heard of an all electric one bouncing. For it to bounce a sensor has to also vibrate or something to produce a bounce.

Look at the tranny or where a speedometer cable might be, usually you find them coming off the side of the transmission. On an older jeep I had it also screwed into the speedometer with a fitting in the firewall. This firewall flexed and the fitting loosened, producing a bouncing speedometer.
 
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