• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-

Speedometer needle jumping - help!

  • Thread starter Thread starter chemeng
  • Start date Start date Apr 16, 2004
C

chemeng

New Member
Feb 21, 2004
93
0
0
Louisville, KY
Apr 16, 2004
#1
  • Apr 16, 2004
  • #1
Hi everyone,

Got a '65 fastback I am slowly restoring and have this problem. It usually starts jumping above 30 mph and gets worse as the car goes faster. It also reads about 10 mph faster than it should, found out the rear end has been replaced and has 2.79 gears in it (next year's project is to put in 3.25's and a posi). I traced down the speedo cable and it is secure, but there is a little transmission fluid leaking from it. Is this the cause and should I just replace the cable?

Thanks in advance, Mike
 

66stangmeister

New Member
Apr 14, 2004
226
1
0
Lafayette, LA
Apr 16, 2004
#2
  • Apr 16, 2004
  • #2
i have that same prob on my 66 that i got in december...me and my dad replaced the speedo cable but it's still off once u go over 30 or 35 like u say. I'm starting to thinks its the speedometer gear thats in the transmission....i haven't replaced that so i don't know if thats the problem. but it probablly is
 
1

1965-Mustang

New Member
Nov 25, 2003
85
0
0
Apr 16, 2004
#3
  • Apr 16, 2004
  • #3
Maybe this might help?

http://www.mustangmonthly.com/techarticles/173_0401_top/index3.html

Article "Instruments Acting Weird"

Mine does this too. Need to fix this weekend maybe.
 

66stangmeister

New Member
Apr 14, 2004
226
1
0
Lafayette, LA
Apr 17, 2004
#4
  • Apr 17, 2004
  • #4
thanks for the link dude.
 
You must log in or register to reply here.

Similar threads

For Sale 3-owner 1987 Mustang GT, $18K obro, Lancaster CA
  • Bill Cool
  • Oct 6, 2024
  • Fox Body Mustangs For Sale (1979-93)
Replies
4
Views
2K
Fox Body Mustangs For Sale (1979-93) Oct 13, 2024
nickyb
G
Drivetrain 90 LX Speedo Problem
  • Glliw
  • Jun 1, 2020
  • Fox 5.0 Mustang Tech
Replies
11
Views
2K
Fox 5.0 Mustang Tech Jul 20, 2020
Mustang5L5
Tach needle dropping and jumping back up on '93 2.3L
  • Tavis
  • Feb 27, 2020
  • 2.3L (N/A & Turbo) Tech
Replies
11
Views
4K
2.3L (N/A & Turbo) Tech Oct 20, 2024
glowstang93
Speedometer, temp, and fuel gauge issues (fox t5/late 5.8 in classic)
  • SadbutTrue
  • Dec 30, 2019
  • Classic Mustang Specific Tech
Replies
3
Views
2K
Classic Mustang Specific Tech Jan 4, 2020
General karthief
Speedometer gear
  • Lake Martin John
  • Apr 18, 2019
  • Classic Mustang Specific Tech
Replies
2
Views
1K
Classic Mustang Specific Tech Apr 18, 2019
Lake Martin John
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?