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Old 02-01-2021, 12:05 PM   #1
Neinris
 
Drives: 08 Yaris 3 Door Hatchback
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Location: ‘Murica!
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Speed Accuracy...

The Yaris is said to have two different stock wheel/tire combo, the 175/65/R14s and 185/60/R15s. Currently I have 185/60/R15s, and my speedometer reading is off by 2MPH, where it reads 60MPH, when I'm actually going 62MPH. So I believe my car is dialed for the 175/65/R14 combo. It's kind of bothering me and want it fixed. Am I the only one having this issue? I don't want to go with smaller tires because currently the tire size I have fill my wheel well nicely. Is there a part number difference for the speed sensor that goes in the transmission?
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Old 02-02-2021, 12:08 PM   #2
Mister
 
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https://yellr.com/

Yootoobers use this?
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Old 02-02-2021, 05:28 PM   #3
kevinj93
 
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Hmm, my speedometer reads faster that the actual speed.

Interestingly, If I take the output from the OBD port, it agrees with GPS speed. I wonder if anyone knows if it is possible to physically open the speedometer and adjust it?
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Running on standard AU 14" steel wheels (14x5 rims, 175/70R14 tyres). Added reversing camera and touch screen radio, cruise control, 16" rear wiper blade, tow bar and dash cam.
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Old 02-03-2021, 11:07 AM   #4
Neinris
 
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Quote:
Originally Posted by Mister View Post
https://yellr.com/

Yootoobers use this?
Interesting... Thank you! I might get this.
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Old 04-30-2022, 01:21 PM   #5
RedRide
 
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With my '09 HB The speedometer is dead on

This is according to all those solar powered speed read outs that a lot of towns use.
When a readout says 30 MPH (in a 30 MPH zone) that is exactly what my speedometer says also.

This is with 185/60/R15s tires as this is the size that came with it
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Old 10-13-2022, 05:11 PM   #6
Neinris
 
Drives: 08 Yaris 3 Door Hatchback
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Eureka!!!

I discovered that there ARE two different part numbers for the speedometer driven gear sun-assembly!!!

One specifically states 185/60R15, I’m going to order it and install and see if that fixes my speed difference issue that’s bee driving me nuts for years!!!
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Old 11-02-2022, 08:58 AM   #7
Neinris
 
Drives: 08 Yaris 3 Door Hatchback
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Is there a special tool to remove the speed sensor that's in the manual transmission? I couldn't get mine off to try and replace the gear sub-assembly. And yes, I removed the bolt that was holding it.
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Old 11-02-2022, 12:38 PM   #8
sh0rtlife
 
Drives: 2007 5dr canadian import
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assuming its like all the rest ..its a very..VERY tight fit and just needs more effort..alot of them are a neer press on fit, you could always try tossing it in the freeze for a couple hours to shrink the metal its on
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Old 11-02-2022, 03:18 PM   #9
remcafee
 
Drives: 2007 Toyota Yaris 3 door
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it should be sealed by an o ring, sometimes they fuse themselves to the case, just keep struggling, swearing, and fucking up your hands until its out lol
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Old 11-02-2022, 04:08 PM   #10
Neinris
 
Drives: 08 Yaris 3 Door Hatchback
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Quote:
Originally Posted by remcafee View Post
it should be sealed by an o ring, sometimes they fuse themselves to the case, just keep struggling, swearing, and fucking up your hands until its out lol
LOL!!!
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Old 11-02-2022, 04:44 PM   #11
sh0rtlife
 
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ah the actual sensor..is there room to get a carpenters blade under it?..ive used them as a puttyknife on things like that in the past to work them up just enought o actuly get a puttknife in there to work them more
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