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05-14-2012, 05:23 PM | #1 |
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Speedometer Bouncing Back and Fourth
I just put a new 3:54 ring and pinion in my 29 Closed Cab Pick Up. I changed the speedo gear too. Now the speedometer bounches back and fourth. Any Ideas? Thank you.
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05-14-2012, 07:49 PM | #2 |
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Re: Speedometer Bouncing Back and Fourth
Bad cable or cable lube.
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05-14-2012, 07:53 PM | #3 |
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Re: Speedometer Bouncing Back and Fourth
Mine did that for a while until the lube worked it's way into the entire cable apparently. It just quit doing it one day and has been working fine since. I had used the regular Cable Lube from the catalog. With a new cable too. Works fine now.
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05-14-2012, 08:24 PM | #4 |
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Re: Speedometer Bouncing Back and Fourth
Mine did that too. I found that the square cable end (down at the speedo gear) had come loose from the wire. Crimping it helped for a while, but it worked loose again. I finally filled the square end with JB Weld, crimped the wire in, and it never came loose again.
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05-14-2012, 09:03 PM | #5 |
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Re: Speedometer Bouncing Back and Fourth
I just fixed this same issue last week on a 30 town sedan. The cable slipped Dow into the bottom gear and as such it was not seated into the speedometer. Took a 10/32 screw and cut the head off and slipped it into the bottom gear and then installed the cable. Now the cable slips into the speedometer head fully.
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05-14-2012, 10:17 PM | #6 |
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Re: Speedometer Bouncing Back and Fourth
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05-15-2012, 07:32 PM | #7 |
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Re: Speedometer Bouncing Back and Fourth
I stopped my 30 sedan by dropping a little 3in1 oil in the speedometer. I had already lubed the cable.
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05-15-2012, 08:17 PM | #8 |
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Re: Speedometer Bouncing Back and Fourth
What can I use to lubricate the cable, I don't have a Model A dealer on the corner but I do an auto parts, hardware store, gas station and a tavern!
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05-15-2012, 08:55 PM | #9 |
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Re: Speedometer Bouncing Back and Fourth
If you can't get speedo cable lube you can use regular grease
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05-16-2012, 08:07 AM | #10 |
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Re: Speedometer Bouncing Back and Fourth
Don’t use regular grease. Use any good cable lubricant. I had contacted the Lubriplate Lubricants Company and asked them which of their products are for use on automobile speedometer cables and they recommended the Aero. http://www.lubriplate.com/products/greases/aero.html the product is good for minus 60 degrees.
Pull the cable completely out and apply the cable grease as you feed the cable back into the cable housing. |
05-16-2012, 08:29 AM | #11 |
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Re: Speedometer Bouncing Back and Fourth
Use Vasoline cheap and in the house usually,all i used back in the day and still works for me.ken ct.
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05-16-2012, 10:00 AM | #12 |
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Location: new jersey
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Re: Speedometer Bouncing Back and Fourth
I also have the same problem. The speedometer reads fine in 1st or 2nd gear, but when its in 3rd it bounces back and forth. If it is the cable wouldn't it bounce all the time? the cable seems free and easy to turn. What is the easiest way to lubricate the cable?
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05-16-2012, 04:18 PM | #13 | |
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Re: Speedometer Bouncing Back and Fourth
Quote:
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. Last edited by 700rpm; 05-20-2012 at 11:24 PM. |
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05-16-2012, 10:12 PM | #14 |
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Re: Speedometer Bouncing Back and Fourth
Pull the speedometer and look at where the cable is in the housing. The tip of the cable should be at the end of the outer cable. If not then refer to my earlier post.
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05-17-2012, 06:51 AM | #15 |
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Re: Speedometer Bouncing Back and Fourth
Thanks Tin Cup, I will check that out. Could be an easy fix.
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05-20-2012, 06:48 PM | #16 |
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Re: Speedometer Bouncing Back and Fourth
I pulled the cable out from the top, it was well lubed, I put it back in, test drove, same problem , I unscrewed it of at the bottom, every thing seemed ok. test drove, same problem. Now what??
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05-20-2012, 07:34 PM | #17 | |
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Re: Speedometer Bouncing Back and Fourth
Quote:
If tooth contact is good, then it must be the speedometer head that needs to be lubed or loosened up. |
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05-20-2012, 07:59 PM | #18 | |
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Re: Speedometer Bouncing Back and Fourth
Quote:
How about K.Y. or Astro Gel??? Bill W.
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05-21-2012, 11:33 PM | #19 |
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Re: Speedometer Bouncing Back and Fourth
I had to disconnect my speedometer this weekend to install a firewall insulator. When I hooked it back up it started to bounce. I recall reading on FB once that a source of the "bounce" can be overtightening the cable into the speedometer housing. Sure enough, I loosened the collar and the bounce stopped. I guess the other way to approach this would be take a bit off the square end of the cable where it fits into the speedometer. I suspect that the cable end is just a bit too long and overtightening it makes it bind. ?????? Anyway it now works.
Last edited by 30Tudor; 05-22-2012 at 12:46 AM. Reason: Added clarification sentence |
05-22-2012, 07:49 AM | #20 |
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Re: Speedometer Bouncing Back and Fourth
If you have an old piece of speedo cable cut it to about 6" and pull your speedo out of the car. Chuck the cable into an elctric drill and slip the other end into the speedo. Run the drill in reverse and see if the speedo itself is jumping. Usually a full blast drill reads about 25mph.
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