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Technical Discussion Forum For the discussion of technical questions about Professional Cars and their repair and maintenance. Posting in this forum is limited to PCS Members and / or Site Supporters. We encourage all website users to become members of the Professional Car Society and / or become Site Supporter.

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Old 03-09-2010, 05:13 PM
Josh Gentry Josh Gentry is offline
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Default Speedometer Cable

On my 67 M-M, the geers on the end of the speedometer cable are making a roring sound when you drive it. I have ben told theres no way to fix it without replacing it, but I've also ben told you can stop it. So, my question is, is there a way to stop it? Its not really a big deel, but on a long trip it can kinda get on your nervs.

Thanks for any help you can give me,
Josh
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Old 03-09-2010, 08:53 PM
Brendan Martin Brendan Martin is offline
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Josh mine is doing the same thing on my 63, but it stops making the noise when the car runs for a while. The speedometer doesn't work but the odometer does. It is on my list to fix, but I think I either need a rebuild or a new speedometer. Mine has been broken since I bought the car.
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Old 03-09-2010, 08:56 PM
Mike Stevens Mike Stevens is offline
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Smile speedo cable fix

Josh,
Once they start making noise you either change them or disconnect them. If the gears are worn you might try to find a new gear. I am sure you will get more advice from the members of this forum.
Mike
61 M-M
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Old 03-09-2010, 09:21 PM
Paul Steinberg Paul Steinberg is offline
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If it is the speedometer head that is making the noise, then the only solution is to take it out and have it repaired, if parts are available. If not, then finding a replacement speedometer is the only other choice. Turning the odometer to match the mileage of your original is a tricky thing to do, and I don't recommend doing it. I learned how to do this back in the 1960's when I worked in a shop that repaired wrecks. Just not certain that my hands are steady enough to do it without making a mistake at this point in my life, but will try if you find one that needs to be reset.
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Old 03-09-2010, 09:40 PM
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John ED Renstrom John ED Renstrom is offline
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some times it will work if you take the head out and put a little oil on the end,
there is a brass bushing that the whirling magnet goes around on and that is were the noise comes from. if it dry it might work if it's worn out most likely not. as it quits when you run it for a bit then I would say it dry and the heat build up in it enough to melt some old grease and lube it. it would be worth a try on it. beside you need to clean the dust out of it any way and change those bulbs that are burnt out. spend the weekend and tear it apart.
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Old 03-09-2010, 09:49 PM
Josh Gentry Josh Gentry is offline
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The speedometer works, its off just a little but it works. And no matter how long you drive it the noise doesn't stop. wen I bought the car I thought it was the tires making the noise, but after a while on the road figured out thats not what it was. Its kinda like having a small quiet siren up under the hood, kinda anoying.

Josh
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Old 03-09-2010, 09:55 PM
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up under the hood??? you got a gear box on the inner fender that the cables run to. if so take it apart and but some gear lube in it. the 253 tires will put it off about 5 mph
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Old 03-10-2010, 09:01 AM
Richard Vyse Richard Vyse is online now
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Funny you mention this. On my Lifeliner I have a whining noise once in a while when driving it. Can't quite figure out what is happening or where it is coming from. I greased the speedometer cable so if turns nicely. The whine will begin, get loud, then stop! I guess I could drive it until it makes the noise, stop and unscrew the cable, then drive again to see if it happens again. If the noise doesn't return then I know it's the speedometer itself.
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Old 03-10-2010, 11:21 AM
Danny Ryder Danny Ryder is offline
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Quote:
Originally Posted by Josh Gentry View Post
The speedometer works, its off just a little but it works. And no matter how long you drive it the noise doesn't stop. wen I bought the car I thought it was the tires making the noise, but after a while on the road figured out thats not what it was. Its kinda like having a small quiet siren up under the hood, kinda anoying.

Josh
Unhook the speedo and use your GPS to monitor your speed. Problem solved!
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Old 03-10-2010, 01:09 PM
Richard Vyse Richard Vyse is online now
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Quote:
Originally Posted by Danny Ryder View Post
Unhook the speedo and use your GPS to monitor your speed. Problem solved!
Still not sure if the speedometer is the issue but will test this weekend.
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