Pinion Index

meh_kick · **Posted:** Tue Apr 29, 2008 10:25 am

I just had my Pinion Index reset (computer adjusted the revolutions per mile) to correct the KJs speedo issues and realign the shift points of the transmission - $40 and 5 minutes at the dealer :roll:

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Today I found this fella's write up on his 231 t-case and speedo gear. Don't the KJ's use the same transfer case? Or is the 231J different?

This could be a fix for those concerned with adjustments after a lift and wheel swap.

tjkj2002 · **Posted:** Tue Apr 29, 2008 11:34 am

meh_kick wrote:

I just had my Pinion Index reset (computer adjusted the revolutions per mile) to correct the KJs speedo issues and realign the shift points of the transmission - $40 and 5 minutes at the dealer :roll:

.

Today I found this fella's write up on his 231 t-case and speedo gear. Don't the KJ's use the same transfer case? Or is the 231J different?

This could be a fix for those concerned with adjustments after a lift and wheel swap.

The 231 in the KJ does not have a provision for a speedo sensor in the t-case.The KJ uses a tone ring/sensor that is mounted in the rear axle to operate the speedo.

tommudd · **Posted:** Tue Apr 29, 2008 11:38 am

dang TJKJ beat me to one :lol:

Tom

Guest · **Posted:** Tue Apr 29, 2008 11:07 pm

What dealer? King's Chrysler quoted me 80

cmohr · **Posted:** Tue Apr 29, 2008 11:56 pm

I got mine done twice ( two different settings when we were trying to find the best setting), for FREE, I knew the guy... It pays to have a good relationship with your Stealership

meh_kick · **Posted:** Wed Apr 30, 2008 9:28 am

ThunderbirdJunkie wrote:

What dealer? King's Chrysler quoted me 80

Hamilton-Fairfield Jeep.

Went from 770 revs per mile to 681. Now the speedo is off slightly in the other direction with the MTRs. I'll check this week with my Toyo ATs.

I think 700 - 705 would be the butter zone for 245/75s...

Cmohr - I'm not sure that I'm getting the same results as you did. It does feel more responsive, but not overly dramatic.

tommudd · **Posted:** Wed Apr 30, 2008 11:04 am

I still need to find someone to do this of course I have only stopped in 2 stealerships up here in Toledo but both had that glassed over/ deer in the headlight look when I asked them about it

meh_kick · **Posted:** Wed Apr 30, 2008 11:41 am

tommudd wrote:

I still need to find someone to do this of course I have only stopped in 2 stealerships up here in Toledo but both had that glassed over/ deer in the headlight look when I asked them about it

It was pretty cool here. The guys let me watch while they were doing it too. After reading this post, YOU could walk them through the process:

Basically they:
1) Take their ScanGuage on steroids and plug it into the port.
2) Verify the jeep information (model and year) and access "KJ Body" from the onscreen menu
3) Select "Pinion Index"
4) If you have a tire size within their pre-programmed list (there were 8 options on this one) then select it. Otherwise choose "OTHER" and input the revolutions per mile (can be found at Tirerack.com look at the tire spec links)

I post this because I'd like to know if the fancy Scan Guage II has any ability to change factory settings. I've heard that it can record some nice data, but I'm not sure about making changes to the computer.

tommudd · **Posted:** Wed Apr 30, 2008 12:20 pm

Hopefully someone will chime in on the scan guage II I have been wanting one as well and if it does that would be icing on the cake ! But I haven't read anywhere if it will or not

tjkj2002 · **Posted:** Wed Apr 30, 2008 2:12 pm

tommudd wrote:

Hopefully someone will chime in on the scan guage II I have been wanting one as well and if it does that would be icing on the cake ! But I haven't read anywhere if it will or not

Quote:

1) Take their ScanGuage on steroids and plug it into the port.

The "scan gauge on steroids" is the DRBIII.

Jeepjeepster · **Posted:** Wed Apr 30, 2008 3:57 pm

tommudd wrote:

Hopefully someone will chime in on the scan guage II I have been wanting one as well and if it does that would be icing on the cake ! But I haven't read anywhere if it will or not

Ill be getting one as soon as those dang taxes get back. SS# says they wont get here will june though. :evil: