Mr. Snappy
Adventurer
So, I recently had new tires installed on the hundy, now my speedo's off by about 5 mph too low. Any ideas on how to reset this? I can't find anything on changing it on the 100.
Thanks!
Thanks!
100 Series speedo recalibration?
- Thread starter Mr. Snappy
- Start date
texascrane
Adventurer
http://www.yellr.com/yb_home.htm
Their toyota harness will plug right into the plug coming off the transfer case. The other option is Mark's 4wd Speedo correction unit sold by Slee. It's about twice the price and requires splicing into the wiring behind the glove box.
Their toyota harness will plug right into the plug coming off the transfer case. The other option is Mark's 4wd Speedo correction unit sold by Slee. It's about twice the price and requires splicing into the wiring behind the glove box.
texascrane
Adventurer
Relevant thread from ih8mud: http://forum.ih8mud.com/threads/yellowbox-speedometer-correction-install.818436/
TexasGuidedExpeditions
Guide
Use a scan gauge, as others have. However you could install a correction speedo box and here is the write-up. Also you can replace the speedo gear, but that may be a bit farther than most individuals would like to do. If you use the appropriate search function in Ih8mud.com, you can find more detail of each option/choice. 
marks-speedo-correction-install
land+cruiser+100+speedo+correction
speedo-correction
slee_speedo
marks-speedo-correction-install
land+cruiser+100+speedo+correction
speedo-correction
slee_speedo
texascrane
Adventurer
Use a scan gauge, as others have. However you could install a correction speedo box and here is the write-up. Also you can replace the speedo gear, but that may be a bit farther than most individuals would like to do. If you use the appropriate search function in Ih8mud.com, you can find more detail of each option/choice.
marks-speedo-correction-install
land+cruiser+100+speedo+correction
speedo-correction
slee_speedo
As far as I know there isn't a gear to swap out on the 100 series. The issue with the Marks 4wd option, depending on your perspective, is that it requires splicing into the ecu harness behind the glove box. I personally think the yellow box is a cleaner and easier install.
The other option is to install a scanguage. It will display the correct speed, although your speedometer/odometer will still be off. It's a fairly popular modification and has other benefits besides reading the correct speed. However, I like correcting the actual signal into the ECU... otherwise your odometer is going to be understating your mileage.
Mr. Snappy
Adventurer
Yeah, and which scan/gauge? I've looked at a few, like the one from jet, but no reprogramming option for the speedo.
And I'm not too keen to the idea of hacking into the harness IF I don't have to.
And no, there is no regearing the speedo on the 100 series as far as I can find.