Correcting speedo error
08-28-2007, 07:20 PM
#21
Guest
Posts: n/a
Re: Correcting speedo error
budman wrote:
Looks at subject, pictures Borat in a green thong/speedo.
Pokes eyes with pen.
> A GPS is as accurate at calculating your vehicle speed as is a
> 'certified' speedo in a police car. So when the speedometer in my
> 2006 Liberty was registering 107 kph when the GPS was showing 120
> kph, I mentioned this at my next service interval. The mechanic came
> up with a relatively easy fix. He re-programmed the computer to make
> it think I had different sized tires on the car. He got it dead on.
> However, the odometer still registers less kilometers than the GPS
> records. I have verified the GPS odometer with the markers along the
> highway.
>
> Can anyone confirm that electronically altering the speedometer
> reading would not necessarily change the odometer as well?
Depends on what got reprogrammed. Sometimes there are different offset
values for the spedometer and odometer, both need to be changed.
I don't have the manual for your Jeeps computer, so I can't tell you if
it has two locations.
--
DougW
Looks at subject, pictures Borat in a green thong/speedo.
Pokes eyes with pen.
> A GPS is as accurate at calculating your vehicle speed as is a
> 'certified' speedo in a police car. So when the speedometer in my
> 2006 Liberty was registering 107 kph when the GPS was showing 120
> kph, I mentioned this at my next service interval. The mechanic came
> up with a relatively easy fix. He re-programmed the computer to make
> it think I had different sized tires on the car. He got it dead on.
> However, the odometer still registers less kilometers than the GPS
> records. I have verified the GPS odometer with the markers along the
> highway.
>
> Can anyone confirm that electronically altering the speedometer
> reading would not necessarily change the odometer as well?
Depends on what got reprogrammed. Sometimes there are different offset
values for the spedometer and odometer, both need to be changed.
I don't have the manual for your Jeeps computer, so I can't tell you if
it has two locations.
--
DougW
08-28-2007, 08:19 PM
#22
Guest
Posts: n/a
Re: Correcting speedo error
Steve wrote:
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
08-28-2007, 08:19 PM
#23
Guest
Posts: n/a
Re: Correcting speedo error
Steve wrote:
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
08-28-2007, 08:19 PM
#24
Guest
Posts: n/a
Re: Correcting speedo error
Steve wrote:
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
08-28-2007, 08:19 PM
#25
Guest
Posts: n/a
Re: Correcting speedo error
Steve wrote:
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
> Mike wrote:
>
>> <budman@frozenorth.ca> wrote in message
>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified'
>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>> this at my
>>> next service interval. The mechanic came up with a relatively easy
>>> fix. He
>>> re-programmed the computer to make it think I had different sized
>>> tires on the
>>> car. He got it dead on. However, the odometer still registers less
>>> kilometers
>>> than the GPS records. I have verified the GPS odometer with the
>>> markers along
>>> the highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would
>>> not necessarily change the odometer as well?
>>>
>>> Thanks
>>>
>>
>> Of course it would alter the odometer too
>
>
> And that would be illegal no?
>
> Steve
>
No. It's never been illegal to correct your speedometer.
tw
08-29-2007, 12:15 AM
#26
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
08-29-2007, 12:15 AM
#27
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
08-29-2007, 12:15 AM
#28
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
08-29-2007, 12:15 AM
#29
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
>>
>>Steve wrote:
>>
>>> Mike wrote:
>>>
>>>> <budman@frozenorth.ca> wrote in message
>>>> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>>>>
>>>>> A GPS is as accurate at calculating your vehicle speed as is a
>>>>> 'certified'
>>>>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>> registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>> this at my
>>>>> next service interval. The mechanic came up with a relatively easy
>>>>> fix. He
>>>>> re-programmed the computer to make it think I had different sized
>>>>> tires on the
>>>>> car. He got it dead on. However, the odometer still registers less
>>>>> kilometers
>>>>> than the GPS records. I have verified the GPS odometer with the
>>>>> markers along
>>>>> the highway.
>>>>>
>>>>> Can anyone confirm that electronically altering the speedometer
>>>>> reading would
>>>>> not necessarily change the odometer as well?
>>>>>
>>>>> Thanks
>>>>>
>>>>
>>>> Of course it would alter the odometer too
>>>
>>>
>>> And that would be illegal no?
>>>
>>> Steve
>>>
>>
>>No. It's never been illegal to correct your speedometer.
>>
>>tw
Illegal to alter the odometer reading though. I even pulled the needle off the
speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
was being operated in the passenger seat by a police officer.
Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
put in the tank. I use K-Jon Vehicle Record System that calculates among many
other things, my KPL, or kilometers per litre. I then take that figure & go to
http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
only after I drove back to the Michigan NASCAR race on Tuesday that it came to
light that I HAD to be getting better fuel economy than VRS indicated.
I drove round trip 588 km and still had 1/4 tank left when we got back to
London. This was according to the vehicle odometer. However, the GPS said we
drove 658 km. I have since checked known distances and the GPS is dead nuts.
The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
that I will theoretically be able to drive 12% further before my warranty runs
out! However, I think I'll mention this at my 30K maint. visit. If they think
it warrants fixing, then let them find the solution. If they are content with
the current situation, then so be it.
For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
that's too bad for driving 65-70 mph for the most part.
08-29-2007, 12:17 AM
#30
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.