Odometer issue

RockerGuy

RockerGuy

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GSXR 750; 2004

So it appears that my odometer is running a bit fast. At first I thought it was my speedohealer, but I removed it and it still counts a bit too fast.

What could have caused this?

The reading is sensed from the counter-sprocket, there's stock # of teeth on both sprocket.

Is there screw-up on my system's computer?
 
If you no longer have stock sprockets your speedometer & odometer will be off... That's y you have the speedohealer, is it
Possible you didn't program it correctly?
 
Tire size (total circumference) will have an influence, also.

The intentional error that is built into the speedometer cannot be corrected by a Speedohealer or anything similar, independently of the odometer. If you make the speedo right (normally they read high) then the odometer will read low.
 
Brian P said:
Tire size (total circumference) will have an influence, also.

The intentional error that is built into the speedometer cannot be corrected by a Speedohealer or anything similar, independently of the odometer. If you make the speedo right (normally they read high) then the odometer will read low.
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I was thinking about that, but thats the opposite of what is happening. Maybe it's a sensor issue. Do u think there can be a problem if the Speedo reads accurate but the odo is wacked?
 
RockerGuy said:
I was thinking about that, but thats the opposite of what is happening. Maybe it's a sensor issue. Do u think there can be a problem if the Speedo reads accurate but the odo is wacked?
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Did think that was possible. How could you do 100kmph for and hour and it not read 100kms travelled?
 
I set up my speedodrd, then changed my tire from a 190 to a 180 and the difference is so minimal it's barely noticable. At around 150 my speedometer is off by like 2/3kms
 
^^
I set it according to GPS. I took both readings from GPS & the incorrect speedo reading. Punched it into the calculator on the Healer website and it gave me instrutions to program the healer.

It should however read the Kms slower tho, instead its reading them faster, ie. the kms are counting higher than they should be.
 
RockerGuy said:
^^
I set it according to GPS. I took both readings from GPS & the incorrect speedo reading. Punched it into the calculator on the Healer website and it gave me instrutions to program the healer.

It should however read the Kms slower tho, instead its reading them faster, ie. the kms are counting higher than they should be.
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You need to run the test at a higher rate of speed. Like 150kmph. No joke. Let's be honest. We all hit those speeds and that's when your speedometer needs to be right. If ur doing 63 in a 60, who really cares. That's what I would suggest.
 
C-Note said:
You need to run the test at a higher rate of speed. Like 150kmph. No joke. Let's be honest. We all hit those speeds and that's when your speedometer needs to be right. If ur doing 63 in a 60, who really cares. That's what I would suggest.
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Yes, its actually a better reading if you do it at a higher speed.
From what I recall, I did it around 130-140 km/h, so not too far apart. Speed is very accurate when compared to my GPS, its only the ODO part that is wacked
 
RockerGuy said:
Yes, its actually a better reading if you do it at a higher speed.
From what I recall, I did it around 130-140 km/h, so not too far apart. Speed is very accurate when compared to my GPS, its only the ODO part that is wacked
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Alright. Well best of luck. Let me know if u figure it out!! Got nothing more for ya bro
 
well the sensor on your front sprocket cover gets the signal from the 4 pin unit on the output shaft....everything is driven by this.....speedo & ODO.

Since you have a flashed ECU, this might be parameter that might not been properly re-programmed.
 
frekeyguy said:
well the sensor on your front sprocket cover gets the signal from the 4 pin unit on the output shaft....everything is driven by this.....speedo & ODO.

Since you have a flashed ECU, this might be parameter that might not been properly re-programmed.
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I wonder what I have to do to get it back to normal?
 
Usually the ECU has nothing to do with the Odometer. It may be different in this case, but every vehicle I've seen has the cluster reading the speed sensor directly.

Only thing I can see is the wheel diameter that's already been mentioned.
 
RockerGuy said:
I wonder what I have to do to get it back to normal?
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TheDirty said:
Usually the ECU has nothing to do with the Odometer. It may be different in this case, but every vehicle I've seen has the cluster reading the speed sensor directly.

Only thing I can see is the wheel diameter that's already been mentioned.
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I think you are RIGHT. The ECU has nothing to do with the ODO, they are usually independent units. But the sensor needs to go through some sort of sensor unit to convert the speed sensor p/u and convert that into UNITS on the cluster....is this a ECU function? or would the cluster do all of this?
 
RockerGuy said:
I wonder what I have to do to get it back to normal?
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FYI: I have a 04 750 cluster and ECU, see if swapping out the cluster fixes it, or swapping out the ECU fixes it...I should even have the speed sensor / p/u unit
 
The cluster does all of this. They try to keep everything for the ODO in the cluster to reduce the risk of people being able to change the ODO reading. The sensor in all cases I've seen is a simple Hall Effect sensor. It would be tough for it to screw up and still have the speedo correct as it's a simple square wave signal.
 
Maybe there are metal filings around the front sprocket area or the nut was not correctly placed on the sprocket. Can this cause anything?

How does this sensor record the speed or mileage?
 
RockerGuy said:
Maybe there are metal filings around the front sprocket area or the nut was not correctly placed on the sprocket. Can this cause anything?

How does this sensor record the speed or mileage?
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There are 2 components for the pick up portion.....there is a sensor and the weird 4-prong washer/fitting....as the spocket moves around. The sensor picks up using those points.

Iron filings shouldn't really cause an issue.

dsc012178km.jpg
 
PS: are you sure that the sensor (4-prong) is still intract and not moving around??? Sometime they come loose if you didn't use locktite
 
frekeyguy said:
PS: are you sure that the sensor (4-prong) is still intract and not moving around??? Sometime they come loose if you didn't use locktite
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I'll have to check it out. But from what I remember, the ODO has been doing that since I got the bike
 
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