Odometer is off by exactly half? - SOLVED! Options

[bradtho]

When I got my car the speedo & odo weren't working. I've finally got it all working (required new angle drive AND new speedometer). The speedometer is reading dead-on (verified w/ my gps) but the odo reads exactly half of the actual amount traveled!

OK, so sure this is a great way to keep the mileage low, but while I've still got the speedo unit out and cracked open I'd like to fix this if possible. anyone seen something like this before? I haven't been able to find anything in the archives.

[bradtho]

so I cracked the thing open determined to figure this out. as I mentioned above I used a piece from a new-to-me speedo to get my old speedo running. turns out that all the worm drives had different thread sizes and gears. I pulled out all the shaft's from the new-to-me model and put them in my original unit. good to go! the fact that it was exactly half off was just coincidental.

so why didn't I just use the new-to-me speedo all along? well, face plate had yellowed and didn't match the rest of my gauges and I wanted to preserve the odo reading (even though it isn't entirely accurate).

[70_914]

so I cracked the thing open determined to figure this out. as I mentioned above I used a piece from a new-to-me speedo to get my old speedo running. turns out that all the worm drives had different thread sizes and gears. I pulled out all the shaft's from the new-to-me model and put them in my original unit. good to go! the fact that it was exactly half off was just coincidental.

so why didn't I just use the new-to-me speedo all along? well, face plate had yellowed and didn't match the rest of my gauges and I wanted to preserve the odo reading (even though it isn't entirely accurate).

Glad my gauge could help you out!

Kevin