The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-26-2009, 11:01 PM   #1
caja_larga
Registered User
 
Join Date: Oct 2007
Location: Tucson, Az
Posts: 172
jumpy speedo..

I just installed a neew speedometer from Brother trucks. The speedometer needle jumps around (5mph +or-) I have a new cable in it already and I tried to lube the cable. It this common for the replacement speedos?
caja_larga is offline   Reply With Quote
Old 03-26-2009, 11:10 PM   #2
texanidiot25
Eat My Rust
 
texanidiot25's Avatar
 
Join Date: Jan 2007
Location: Cypress, Texas
Posts: 3,362
Re: jumpy speedo..

Mine does this when it's really cold out..
texanidiot25 is offline   Reply With Quote
Old 03-26-2009, 11:17 PM   #3
tim21391
Registered User
 
tim21391's Avatar
 
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
Re: jumpy speedo..

x2
__________________
1972 C-10...402/400..flowmaster 40 series
1967 Mustang 347 stroker/C-4
1966 Mustang 289/3-speed
2013 Mustang V6/6speed w/300 ponies
I may be 23, but i sure do knows 67-72s are sexy!
Its not MPG its smiles per gallon!
build started 11/25/08
build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796
tim21391 is offline   Reply With Quote
Old 03-27-2009, 10:01 AM   #4
sneakysnake
It's a catastrophic success.
 
sneakysnake's Avatar
 
Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
Re: jumpy speedo..

A dirty cable is usually the culprit.
Did you replace the whole cable or just the inner?May have gunk build up on the inside that needs to be cleaned.
Is the new cable binding, (cut a corner to sharp) something causing stress on the inner cable.
sneakysnake is offline   Reply With Quote
Old 03-27-2009, 11:00 AM   #5
shawn57nomad
Registered User
 
shawn57nomad's Avatar
 
Join Date: Apr 2007
Location: Newton, IA
Posts: 173
Re: jumpy speedo..

how long is the cable for a 350 with a 400 auto? just wondering. my speedo jumps because the cable that's on it now is from the original 3 speed column and it is real tight.
__________________
FAST cars don't make power to the front wheels, THEY LIFT 'EM!
shawn57nomad is offline   Reply With Quote
Old 03-27-2009, 11:51 AM   #6
cdowns
Senior Member
 
cdowns's Avatar
 
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
Re: jumpy speedo..

what did you try and lube the cable with?

they make a special speedo cable lube that is graphite based and it lubes and also polishes the inside of the cable housing for smooth operation/// using heavy grease white grease and similar will dry out and cake up causing drag and a jumpy needle
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane

MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF

DONT BELIEVE EVERYTHING YOU THINK

TAKE MY ADVISE;I DON'T USE IT ANYWAY
cdowns is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:19 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com