Fixing odometer

[prebordao]

The odometer (total and trip) on my speedo suffers from a common ailment: sometimes it works, sometimes it don't (more often)...

I happen to have the "guts" of a working speedo from a 70'T. This one still has metal gears unlike my 74' which has plastic ones, I believe.

Is it possible to transplant them into the a 74' speedo ? will it work ? both are mechanical, but...

[Chris Morse]

My 74 also has a funky, (inoperative) odometer.

Page 209 in the 101 projects book has a good write up on it. I have just had a few more pressing issues.

Looking forward to seeing how yours comes out.

chris

[Kraftwerk]

I would say you have to take them both apart and compare the two gears. Replacement gears are available. I have done it, but them i twacked the needle and screwed the all works and ended up having to send it in anyway, lost time and money but, oh so much experience..

[bfunke]

North Hollywood Speedo or Palo Alto Speedo. Quality work and fair prices. To keep your Porsche odometer healthy - never ever reset the trip meter when the car is moving.

[rattlsnak]

Where can you get replacement parts? NHS and PAS will not sell them outright..

[Kraftwerk]

(HINT: there's a new invention called: GOOGLE!)
Odometer Gears | 72 Croatan Road | Newport News, VA 23606 | 757.593.3478

The gear itself is a cheap-easy fix but I snapped off the "speedo-pointer" when re-assembling the thing and had to send it to North Hollywood who did a great job btw

[pete3799]

I believe Wayne (Pelican) is now selling those also.

[E Sully]

Not a hard fix, just be careful and patient removing the needle.
Porsche 911 & Carrera Gauges and Miscellaneous - Page 4

[Woodyhfd]

FYI to anyone who's tripometer is not working:

A couple of years ago, I sent my speedometer to North Hollywood Speedometer for a rebuild. My odometer was working fine, but the speedo was not.

After I got it back, everything was working fine except the trip odometer, which worked before. I found that the reset button wasn't releasing all the way, which was preventing the numbers from turning. It loosened up after a bunch of resets, but I always make sure that it has fully released each time I reset.

[88911coupe]

Sorry to piggyback. I did the gear fix last summer which worked fine till last week when I noticed my odometer jumped from 177xxx to 277xxx. How the heck do I fix that!?

[rattlsnak]

Not sure how it happened unless something went back together crooked, but if you take it back apart you can "adjust" the mileage to where it should be.