Although not real easy to fix since you will have to disconnect the cable housing at the back of the speedometer.
Speedometer Needle Bounces around...
Le Mans Master
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From: Crossville TN
I don't think graphite is the right lube to use. It has some oil in it and as it dries out it can get packed together and lose its lubrication benefits. Put a light coating of white lithium grease on the cable; leave the last couple of inches of cable [at the speedo end] dry so that lube doesn't work up into the speedo. Use the grease that comes in a tube...not the spray stuff. If the cable has been chewing up the inside of the cable jacket, lubing may [or may not] help it...but that's still the first thing to try.
Pro
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From: Hastings MN
Pro
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From: Pitman NJ
Does your car have cruise control?
If it does, the lower cable is probably bad, or headed that way. As the cruise transducer wares, it puts additional pressure on the lower cable, until it eventually breaks. You could just replace the lower cable, to see if it fixes it.
In my '79, I put in a single cable.
If it does, the lower cable is probably bad, or headed that way. As the cruise transducer wares, it puts additional pressure on the lower cable, until it eventually breaks. You could just replace the lower cable, to see if it fixes it.
In my '79, I put in a single cable.
Melting Slicks
Joined: Apr 2001
Posts: 2,030
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From: Lubbock Texas
Check out this thread for some advice from Willcox on the right and wrong way to lube speedo cables.
http://forums.corvetteforum.com/show....php?t=1998258
DC
http://forums.corvetteforum.com/show....php?t=1998258
DC
Thread Starter
Advanced
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Does your car have cruise control?
If it does, the lower cable is probably bad, or headed that way. As the cruise transducer wares, it puts additional pressure on the lower cable, until it eventually breaks. You could just replace the lower cable, to see if it fixes it.
In my '79, I put in a single cable.
If it does, the lower cable is probably bad, or headed that way. As the cruise transducer wares, it puts additional pressure on the lower cable, until it eventually breaks. You could just replace the lower cable, to see if it fixes it.
In my '79, I put in a single cable.
Pro
Joined: Aug 2007
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From: Pitman NJ
If the cruise doesn't work, I recomend that you go with a single cable. A mechanic friend told me that there used to be a coupler that you could use to connect the upper with the lower cable, but I have never seen on.
Disconnecting the cable from the speedo can be done without taking the dash appart. I was able to kneel outside the car, and reach under under the dash. I found the cable, and followed it up the speedo. There is a tab you push that will disconnects it. Go under the hood, and disconnect the upper cable from the transduscer, and pull it through the firewall, and the grommit will come with it. Put new cable through the grommit, and into the firewall. Reach under again, and the new cable 'snap' back onto the speedo. Put the gommit back into the hole. The other end screws onto the transmission, you will have to use ramps or jackstands, just make sure it's not touching an exahust pipes.
As a side note, I left all of the cruise control stuff there. Just in case I get the energy to attempt to get it going. However, this isn't very likely to happen.
This is an easy fix that should take about 15-30 minutes to do.
BTW, please fill out your profile and post some pictures of your ride. This forum loves pictures.
Disconnecting the cable from the speedo can be done without taking the dash appart. I was able to kneel outside the car, and reach under under the dash. I found the cable, and followed it up the speedo. There is a tab you push that will disconnects it. Go under the hood, and disconnect the upper cable from the transduscer, and pull it through the firewall, and the grommit will come with it. Put new cable through the grommit, and into the firewall. Reach under again, and the new cable 'snap' back onto the speedo. Put the gommit back into the hole. The other end screws onto the transmission, you will have to use ramps or jackstands, just make sure it's not touching an exahust pipes.
As a side note, I left all of the cruise control stuff there. Just in case I get the energy to attempt to get it going. However, this isn't very likely to happen.
This is an easy fix that should take about 15-30 minutes to do.
BTW, please fill out your profile and post some pictures of your ride. This forum loves pictures.
Last edited by blk79nj; Apr 27, 2008 at 10:42 PM.
Drifting
Joined: Oct 2007
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From: Collinsville MS
St. Jude Donor '08
I bought one of the speedometer cable grease fittings that screws onto the end of the cable. I put new cables on and pumped them full of marine grease. It pumped full of grease but then you have to work the cable back into the housing because it pushes it all the way out. I had to dig some grease out afterwards because I was worried about it working its way into the speedometer. After reading the other post I probably screwed it up.
In the future I will probably just pull the cable out of the housing and wipe it down with grease and insert it back into the housing, I dont think they require the amount lubrication that I initially thought.
In the future I will probably just pull the cable out of the housing and wipe it down with grease and insert it back into the housing, I dont think they require the amount lubrication that I initially thought.
Former Vendor
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Lance,
Your problem is not the same. Your tach is electronic and it can bounce from a bad or loose wire on the tach filter, distributor connection on the pulse wire and so on. Your tach is not mechanical and thus not the same in the way it functions.
e
Your problem is not the same. Your tach is electronic and it can bounce from a bad or loose wire on the tach filter, distributor connection on the pulse wire and so on. Your tach is not mechanical and thus not the same in the way it functions.
e