Set Pinion Factor

On Wed, 01 Dec 2004 03:42:38 GMT, mic canic > wrote:
>the pimion factor is set using a high quilty scan tool and refers to tire size
>
>Michale wrote:
>
>> In addition to the high idle, my wife's 96 Sebring also has an issue with
>> the speedometer. Namely it doesn't work. All other gauges work, but not
>> the speedometer. I pulled the PCM off so I could get better access to the
>> EGR Pipe to fix it. I noticed a sticker on the back of the PDM. It said
>> "Speedometer will not work unless pinion factor is set."
>>
>> A Google produced a few results which leads me to believe that the Pinion
>> Factor must be set by a tech.
>>
>> Am I reading that right?
>>
>> Thanx
I have a 96 Grand Voyager that the Transmission was replaced with a
factory rebuild at 53k. About 25k later it was hesitating when you go
from park to drive. My transmission shop checked to see if any codes
were dropped. He noticed that the Pinion Factor was blank, so he set
it for the proper size tires 215/65r15. Now the speedometer is off. At
30mph read speed is 28. at 60mph read, speed 55mph. Why is it wrong
now? He cant un-program it, only change for a different size tire
which which would make it worse. Any Ideas?