Correcting speedo error
08-28-2007, 07:12 PM
#11
Guest
Posts: n/a
Re: Correcting speedo error
That would be odd, but there 'could' be two different calibrations in
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
08-28-2007, 07:12 PM
#12
Guest
Posts: n/a
Re: Correcting speedo error
That would be odd, but there 'could' be two different calibrations in
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
08-28-2007, 07:12 PM
#13
Guest
Posts: n/a
Re: Correcting speedo error
That would be odd, but there 'could' be two different calibrations in
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
the computer program.
I doubt anyone here has a factory manual for a Liberty to tell you for sure.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
budman@frozenorth.ca wrote:
> 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
>
08-28-2007, 07:18 PM
#14
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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
> 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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
08-28-2007, 07:18 PM
#15
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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
> 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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
08-28-2007, 07:18 PM
#16
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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
> 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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
08-28-2007, 07:18 PM
#17
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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
> 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
>
Why? You want the odo to be 'real' miles.
My CJ7 with 33" tires has an odo gear to make them match the speedometer
exactly in 'real' miles.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
08-28-2007, 07:20 PM
#18
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, 07:20 PM
#19
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, 07:20 PM
#20
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
