Bouncing Speedometer Needle

[cjkeeliii]

I didn't find anything in the CUCV forum relating to this. My speedometer needle bounces, (worse during hot weather). Is there any fix short of ordering a new speedometer? I've already installed a new cable. Thanks.

 

[73m819]

did you check the cable tube when installing the new cable, sounds like a slightly pinched cable

 

[drgreg]

My speedo on the #2 deuce bounces like a mofo also.

 

[319]

Sometimes the bouncing needle is an indiction that the cable needs to be greased but the hot weather thing is unusual. Did you try greasing the original cable and has the new cable been greased? Other than that I'd guess the issue is in your trans based on the hot weather comment.

 

[SasquatchSanta]

I took the tach and speedo cables out of my M35, gave them a good washing and greasing and installed them. It worked pretty well BUT the needles still jump around when I play "Dukes Of Hazard" ..... "EEeeeHHaaaaa!"

 

[cjkeeliii]

The new cable isn't pinched, and I used the grease that came with it when I installed it. I also have another speedometer from another m1008. When I installed that one, it also bounced. Could there be a problem in the transmission, and what part do I ask for, and how hard is it to replace? I think the odds of two speedometers having the same problem are slim.

 

[JohnFire]

Mine did that when I first bought it. It ended up being the plastic gear stripped out down in the transfer case. I think it was around $6-$10. The local auto parts store in germany was able to get it then. Now you might have to get it from a dealer. Easy part to change.

 

[AllenEM]

if you get a new gear make sure it's the same color, that tells you the right ratio so the speedo will be right.

 

[319]

Plastic! Figures! Thanks for the info guys, I'm sure it'll help a lot of CUCV owners!

 

[kennyw]

They are still available from Chevy dealers in limited supply, last one I bought was $9.

 

[cjkeeliii]

Problem Resolved

I just wanted to add this in case anyone experiences a similar problem: start with the simplest fix and work your way up. No brainer, right? After replacing the speedo cable and speedo gear, which has 44 teeth on a stock m1008, I found a web sight that repairs speedometers. There FAQ page said that a bouncing needle is sometimes caused by the oil in the speedometer drying out and dust collecting in the speedometer. I lubed the speedometer with CLP and all bouncing, except at around 10-15 mph, has stopped. Hope this helps the next poor sucker.