[Vwdiesel] Speedo drive gear
Roger Brown
r.c.brown at ieee.org
Sun Dec 14 19:54:39 PST 2014
You could also have a good speedo repair shop have a got at it and get both the odometer
and speedometer back in calibration:
http://www.tacomaspeedometer.net/
I had a calibration gear box built for my 4x4 many years ago and that shop just got it so
the speedo was back in spec, the odo reading was whatever it was.
On 12/14/2014 5:01 PM, dieseltdi at verizon.net wrote:
> I read on line somewhere that the ACH had a red gear. I specifically ordered a red drive gear when I put the ACH in my car. I need to go back and find this again. Hayden
>> On Dec 14, 2014, at 6:10 PM, sandy cameron <scameron at storm.ca> wrote:
>>
>> On 12/13/2014 11:54 AM, dieseltdi at verizon.net wrote:
>>> OK, I finally have a working speedometer in my Jetta again. Now, I would really like to fine tune the speedo as it is just a bit off according to the GPS. It measures about 4 mph fast and the odometer is high by about .16 miles. So…..I currently have the red speedo drive gear in my ACH transmission because that is “the one you are supposed to use”. Would changing to the white drive gear speed up my measurement or slow it down? Obviously I need to slow the thing down a bit. So what say the gurus? Hayden
>>>
>>>
>> Cars with the ACH & AGS tranny came from the factory with the white speedo gear I have a few here. That was the nominal diesel tranny and speedo gear. Those were the "long-legged" transmissions. I think the one on my current 89TD daily driver is a 4S.
>>
>> There was also a red, and blue/green gear to cover the wide range of gassers. I have samples of all 3. I think they were one tooth less, and one tooth more, than the white one
>>
>> Red 15 3.65
>> 3.67 171.957.821.B
>> White 16 3.89
>> 3.94 171.957.821.A
>> Green 17 4.25 171.957.821.C
>> From Roger Brown's "4crawler" site
>>
>> Sandy
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