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Username Post: Bouncing Speedometer
ChipB
Poster
Posts 10
05-09-19 12:28 PM - Post#2766029    

The speedometer in my 1962 C10 works fine about half the time. The other half the time, it makes a grinding noise and the needle bounces around. Often when bouncing it only bounces about 10mph either way. But sometimes, it will bounce all over the speed range. (From 0 to 80 or 90 when doing only 35mph) The noise sounds like it is coming from under the dash or in the dash itself. (Hard to tell because I'm always driving when it happens.) Has anyone experienced a similar problem? I'm guessing the easiest thing to do is replace the speedometer cable. If that's not it any ideas?
GreatNorthWoods
"5th Year" Silver Supporting Member
Posts 1018
GreatNorthWoods
05-10-19 04:10 AM - Post#2766078    

  • ChipB Said:
The speedometer in my 1962 C10 works fine about half the time. The other half the time, it makes a grinding noise and the needle bounces around. Often when bouncing it only bounces about 10mph either way. But sometimes, it will bounce all over the speed range. (From 0 to 80 or 90 when doing only 35mph) The noise sounds like it is coming from under the dash or in the dash itself. (Hard to tell because I'm always driving when it happens.) Has anyone experienced a similar problem? I'm guessing the easiest thing to do is replace the speedometer cable. If that's not it any ideas?



Sounds like the cable needs lubrication or replacement. Try removing the cable and coat it with graphite (speedometer lube). Make sure the cable housing isn't kinked anywhere. If lubrication doesn't correct it, replace the cable. Last resort is replacing the speedometer head if the cable isn't the problem.







Vern

1953 Chevy Belair Sport Coupe - 355 Blueprint Engine, 700-R4, Vintage Air, EZ Wire, Ididit column, Cruise/Tilt, 59 Vette Steering Wheel, 4-Wheel Disc Brakes, Posies Springs, Coker Radials, Nova 10-bolt, Mustang II front, Continental Kit

1oldtimer
Senior Member
Posts 328
1oldtimer
08-20-19 12:42 AM - Post#2773623    

Or the speedo head itself needs to be greased. My '64 panel used to do that when it was cold outside.
'60 Chevy El Camino
'60 Studebaker Lark Wagon
'59 Hillman Husky (2-because you need parts)
'56 Chevy Panel truck
'47 Ford 2dr Super Deluxe
'41 Ford Pickup
'36 Ford 5w coupe
'28 Ford Tudor
They're all projects in some form.

WagonMan
"8th Year" Silver Supporting Member
Posts 1640
WagonMan
08-20-19 05:03 PM - Post#2773699    

ChipB
This was written for a different vehicle but the guts are very similar when you get inside.
https://www.chevytalk.org/fusionbb/showtopic.php?t...
Charles

57 210 4dr. Wagon(bought '82)
-350/700r4 Mild Custom
56 BA 4dr. ht.(bought '98)
-265/TH350 Mostly Stock
29 Ford Sedan(bought '75)
-4.3L/TH350(in progress)

ChipB
Poster
Posts 10
08-20-19 07:44 PM - Post#2773714    

Thanks for the feedback all. I replaced the speedometer cable but that didn't fix anything. But with time the bouncing has greatly decreased and the noise has stopped. Of course, the odometer has stopped too. (Stuck at 59999.9) So, I'm pretty sure that the odometer is frozen and that whatever gears were in there are stripped by now. So... I guess I'm in the market for a 1962 odometer. More than likely I'll have to find a used dash from somewhere.
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