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02-26-2009, 07:16 PM | #1 |
Drives: 2008 Yaris Liftback (Sprocket) Join Date: Oct 2008
Location: San Antonio, Texas!
Posts: 2,799
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Speedometer Error?
Has anyone with stock tires on their Yaris ever checked their speedometer against a GPS? If so, what was the difference?
Just looking for GPS versus speedo info. Cheeers! M2 |
02-26-2009, 07:22 PM | #2 | |
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do you have ABS or no?
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02-26-2009, 07:25 PM | #3 |
Drives: 2008 Yaris Liftback (Sprocket) Join Date: Oct 2008
Location: San Antonio, Texas!
Posts: 2,799
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Errr...no, but I am looking to find out what the speedometer error is on a stock Yaris. I don't know how ABS would factor into that, but I am interested if it does...
Cheers! M2 |
02-26-2009, 07:32 PM | #4 | ||
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if you have ABS, the ECU senses speed thru an average taken from each wheel speed sensor. generally the ABS cars are more accurate speed-wise (plastic gear in transmission can become worn/inaccurate) and sorry, i'm no help on what the accuracy is. crap, my post is useless
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02-26-2009, 07:40 PM | #5 | |
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02-26-2009, 08:26 PM | #6 |
Drives: Sedan Join Date: Jan 2009
Location: midwest
Posts: 40
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Mine is balls-on accurate to the GPS. No ABS.
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02-26-2009, 08:31 PM | #7 |
Drives: bone f*ing stock Join Date: Dec 2008
Location: CA east bay
Posts: 234
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I don't use GPS but speed traps read accurately.
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02-26-2009, 09:48 PM | #8 |
Drives: 08 Polar white hatch Join Date: Oct 2008
Location: North Carolina
Posts: 76
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I have a tom-tom and the speedo reads 2 mph faster than the gps.
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02-26-2009, 09:50 PM | #9 |
'07 to '12:2 wipers to 1?
Drives: '12 5-door LE & '14 5-door LE Join Date: Apr 2007
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I'm still trying to figure out how the max speed achieved on my GPS reads 158 mph ....
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02-26-2009, 10:01 PM | #10 | |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
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Do you honestly believe Toyota uses two seperate systems for measuring speed based on ABS or no ABS? Do you also believe non ABS cars have a speedometer cable running all the way to the guage cluster. Oh, and the Yaris speedo is very accurate, provided stock sized tires are installed.... |
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02-26-2009, 10:06 PM | #11 | ||
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there is a gear and sensor mounted to the differential portion of of your non-abs equipped yarii transmission in abs equipped cars the car also monitors speed from the wheel sensors. whether or not the ECU uses this information i'm not sure... most cars yes.. the yaris lol probably not do you know what you're talking about or are you just trying to sound smart? have you ever actually worked on a yaris or echo or scion transmission?
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Last edited by Tamago; 02-26-2009 at 10:24 PM. |
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02-26-2009, 10:34 PM | #12 | |
Drives: 2005 Scion xB Join Date: Nov 2006
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Funny you should say that, how do you spell hipocrite? I can't seem to remember. |
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02-26-2009, 10:39 PM | #13 |
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Hypocrite. S'nuff.
My speedo and GPS get about 1 MPH off at high speeds. (65+ MPH) |
02-26-2009, 10:40 PM | #14 | ||
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i've swapped a non-abs trans into an abs equipped chassis ;) i've seen the different wiring harnesses
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02-26-2009, 10:45 PM | #15 |
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S'nuff!
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02-27-2009, 03:46 AM | #16 |
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Who needs a speedo? I just close my eyes on the freeway, and just FEEL the speed.
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02-27-2009, 08:20 AM | #17 |
Speedo ------ scan gauge --------- GPS all basically the same exact speed. The GPS lags a bit but all give the same readings.
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02-27-2009, 08:22 AM | #18 | |
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i'm surprised the yaris came with a speedo actually, since the non-S units are sans-tachometer
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