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-   -   odometer stopped working (http://forums.pelicanparts.com/porsche-911-technical-forum/765726-odometer-stopped-working.html)

GMR911 08-12-2013 04:25 PM

odometer stopped working
 
My sons 85 Carrera's odometer stopped working, but the speedometer is still working. Is it the plastic gear or possibly some other problem. Where should we look first? Thanks Jerry

pete3799 08-12-2013 04:33 PM

Most likely the gear has passed on.

porwolf 08-12-2013 04:37 PM

Happens to all of us eventually. It is probably the plastic gear. You have two choices: Either do the replacement yourself. Can be done, but not that easy. Plenty of threads here. Or, you send the speedometer to a repair shop like North Hollywood Speedometer, which is a highly recommended place on this forum.

RSTarga 08-12-2013 04:42 PM

ask around locally. I had mine done at a shop close to me. I'd only send to NHS for a complete refurbishment.

GMR911 08-12-2013 05:15 PM

Could it be the cable that attaches to the transmission, or would that disable both the speedometer and odometer. Where does this cable attach to the transmission? Thanks Jerry

porwolf 08-12-2013 06:16 PM

Quote:

Originally Posted by GMR911 (Post 7598749)
Could it be the cable that attaches to the transmission, or would that disable both the speedometer and odometer. Where does this cable attach to the transmission? Thanks Jerry

The cable attching to the transmission gets the signal from there. That signal, 8 contact closures per revolution of the main shaft, feeds the speedometer gauge. Both the MPH and the miles traveled work from that signal. If the speedometer reads MPH but the odometer does not work it's the broken plastic gear inside.

GMR911 08-13-2013 05:46 PM

Thanks for all the input. looks like the plastic gear, Jerry

Bob Kontak 08-13-2013 06:26 PM

If the trip odo says zero, you pushed it in while the car was moving. Ask me how I know.

shrtshck 08-14-2013 03:41 PM

Pull it out and send it to the good folks at North Hollywood Speedometer.

Have done mine and many others, also calibrated it, now the reading is spot on.

Joe Bob 08-14-2013 04:44 PM

Quote:

Originally Posted by Bob Kontak (Post 7600748)
If the trip odo says zero, you pushed it in while the car was moving. Ask me how I know.

The speedo guy at NHS tole me that was a myth.....


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