Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Speedometer issues


  • Please log in to reply
4 replies to this topic

#1 RatInDaHat

RatInDaHat

    USMB Regular

  • Members
  • PipPipPip
  • 71 posts

Posted 27 November 2007 - 12:22 PM

So..

Any reason for my speedometer to suddenly start reading well over actual speed? I'm talking like reading 60. but only going 40 type of error.

My car is a '74 subaru GL (1400)

Thanks,

#2 nipper

nipper

    Semi Elite Master of the

  • Members
  • 17,637 posts
  • Long Island NY

Posted 27 November 2007 - 02:21 PM

Older spedos are really quite simple. They are a spinning magnet is a bell shaped drum. The needle is attached to the drum and the faster the magnet spins, the higher it reads.

What throws off a spedo (this much) is a worn cable, or mechanical malfunction. When the cable starts fraying, it will wind up and release, therefor showing a much higher speed then you are actually going.

Inspect your cable.

nipper

#3 RatInDaHat

RatInDaHat

    USMB Regular

  • Members
  • PipPipPip
  • 71 posts

Posted 27 November 2007 - 02:56 PM

Older spedos are really quite simple. They are a spinning magnet is a bell shaped drum. The needle is attached to the drum and the faster the magnet spins, the higher it reads.

What throws off a spedo (this much) is a worn cable, or mechanical malfunction. When the cable starts fraying, it will wind up and release, therefor showing a much higher speed then you are actually going.

Inspect your cable.

nipper


What are these cables lubed with? graphite?

#4 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,903 posts
  • Oregon City

Posted 27 November 2007 - 09:37 PM

Another thing that can happen is the seal around the base of the speedo cable can break where it goes into the tranny and it'll actually suck up some gear oil to cause it to read differently. It should just be lubed with a thin oil like mineral oil. Best thing to do is to replace it because it'll eventually break on you and leave you without a speedo/odometer. I think they can be had on ebay for pretty cheap.

#5 kiwi subbie

kiwi subbie

    Certified Subaru Nut

  • Members
  • 932 posts
  • Christchurch, New Zealand

Posted 28 November 2007 - 03:01 AM

Another thing that can happen is the seal around the base of the speedo cable can break where it goes into the tranny and it'll actually suck up some gear oil to cause it to read differently. It should just be lubed with a thin oil like mineral oil. Best thing to do is to replace it because it'll eventually break on you and leave you without a speedo/odometer. I think they can be had on ebay for pretty cheap.


i just had my cable brake on my 1400.
bit annoying when you dont no what speed ya doin




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users