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speedometer issue

Old Sep 28, 2012 | 12:18 AM
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bigjohn57
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speedometer issue

i have a 1978 f-150, i had to remove the insturment cluster to repair some wires. when i put it back together, my speedometer is off by about 30 mph. how do i set it at zero and then keep it at zero until i put the speedometer cable back in.

thank you

John
 
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Old Sep 28, 2012 | 07:27 AM
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jim collins
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I'v had a lot of these gauge clusters out and never had that to happen. Did you drop it on the floor or take the speedometer apart ? When you say it's off by 30 miles ,do you mean the needle is stuck at 30 and won't drop on down to O ? If that's it you may have to remove the needle and reset it on O .
 
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Old Sep 29, 2012 | 05:42 AM
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no i didnt drop it or even take it apart,when the truck is not moving the needle points straight down not even close to zero. i dont know how to set it on zero. is thier any hope
 
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Old Sep 29, 2012 | 07:49 AM
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77F150Jason
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Mine dosen't work at all. I just use a free speedometer app on my phone that works off the gps. then you don't have to worry about switchng speedo gears with differant tire sizes. just my 2 cents
 
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