shakey speedo reading question

[turbotroy]

Hey all! My 87 with digital dash fluctuates up or down 5 or 6 mph. The scanmaster fluctuates 25 to 30 mph but only up, not down. I have TT 6.1 chip and if I breathe on the throttle my wideband drops to 10. Could these issues be related? Thanks in advance and cheers!

 

[novaderrik]

VSS issue, perhaps?

 

[BOP4ever]

Pull out Inner speedo cable clean and relubricate. I bet it gets better.

 

[HouTX87]

I lubed my cable, 2 months later the upper cable broke. New cable is not expensive. The fun part is changing it.

 

[turbotroy]

Do I pull it from the speedo head, trans, or cruise? Thanks

 

[Bruce Urie]

Pull it out from the housing after disconnecting the cable housing from the speedometer....do NOT let grease get on the last 6 inches of the cable at the speedometer end...keep that last 6 inches clean...otherwise you'll have problems.

Bruce '87 Grand National

 

[turbotroy]

Cool thanks Bruce do they still use white grease on them?

 

[novaderrik]

use graphite on the speedo cable.

 

[Bruce Urie]

You can use white grease, but very, very little..it's what I used....try to get it on the cable, not all over your hair, beard, mustashe,eyes, tongue like I did. ........graphite is a good idea also, I would go with what he said.

Bruce '87 Grand National