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speedometer jumping

This is a discussion on speedometer jumping within the General Technical Discussion forums, part of the General Tech & Engine Section category; i just replaced my speedo today because the last one didnt work and now the donor one (which is 82K ...

  1. Feb 16 2008, 08:20pm #1
    lazy_one_1
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    speedometer jumping

    i just replaced my speedo today because the last one didnt work and now the donor one (which is 82K kilometers more than mine) works somewhat.the new one generally reads the correct speed but it tends to jump around quite a bit when i maintain a constant speed. does anyone know what this could be?
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  2. Feb 23 2008, 07:21pm #2
    da bazzman
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    Mine is doing the same thing between 55 and 65mph.
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  3. Feb 23 2008, 08:58pm #3
    wickerham
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    could be speed sensor? abs or brake lights on too??
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  4. Feb 24 2008, 08:53am #4
    da bazzman
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    Not on mine.
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  5. Feb 24 2008, 12:24pm #5
    ryansranger98
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    Check my thread a few down from this. ABS, Speedo...etc. It could be the sensor discussed there.
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  6. Feb 24 2008, 12:56pm #6
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    Quote Posted by ryansranger98
    Check my thread a few down from this. ABS, Speedo...etc. It could be the sensor discussed there.
    agreed.

    the speed sensor may be loose and trippy though it won't set of a light.
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  7. Feb 26 2008, 05:35pm #7
    lazy_one_1
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    mines a 94 it has a cable so im thinking its a bad cable
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  8. Feb 26 2008, 06:42pm #8
    BlueMan
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    Yeah, if you've got a cable sometimes it will have a mild bind and then release which causes the jump. You may be able get by with lubing your cable shaft (gotta pull it all the way out), or just replace it.
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  9. Mar 23 2008, 10:17pm #9
    lazy_one_1
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    lol my new speedometer stopped working so i am assuming that it was the cable. they will have to ship one from another province. ford seems to be the only one who has them so time to hand over all my cash to their greedy hands lol
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  10. Mar 23 2008, 10:31pm #10
    PS94
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    did you check local parts stores? They dont list the newer rangers, but I used one out of a 89 with the same configuration as mine, (2wd) and it worked....$25
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