My speedo bounces quite a bit below 10MPH and pulses a bit up to 20MPH before it finally smooths out. It is off/slow by about 10% as well but I'm sure that is fixable via driven gears in the tranny. What causes the bouncy needle? Is it something to do with the cable, cable housing or speedo itself?
I researched "Bouncing Speedo". I don't think this is quite the same........... <iframe width="640" height="360" src="" frameborder="0" allowfullscreen></iframe> I agree with this:
Ok, I'll pull the cable and see what it looks like. I thought I greased it a few years back with something. What is the proper lube & quantity?
I still have a decades-old tube of AC Delco stuff labelled "Speedometer Cable Lubricant". It looks, smells and feels just like thick white lithium grease. No instructions on the back, so I'd simply say use some lithium grease, "apply liberally" and put it all back together! Devon
Sounds like a good rainy day project, which tomorrow is supposed to be. Got an old tube of the white stuff and I'll try that. Does it come out at the top or bottom? Best I remember, it comes out from the dash end and not the trans end.
The cable itself loads into the cable housing/jacket/sleeve/whatever from the speedometer side. The pain is getting up under the dash, at least in my '67 'cat. There's a spring clip around the cable housing at the speedometer, it can be a challenge to push the spring clip toward the cluster with one finger while pulling the cable housing away. Devon
I have always used normal 10-30W motor oil. Two teaspoons is enough to lubricate the whole cable, unplug the top end and let it soak in overnight. Needs to be repeated once every 10 years.
Knuclebusted, I guess you are back from sweating your butt off in Jacksonville. I'm still shivering in the mountains of Virginia. I agree with Jerry on lubricant and I'd like to thank Jerry for the "girls on trampolines" too! I sure miss "The Man Show!!!"