RE: calibrating speedo on 2001 Dak

From: Ronald Wong (ron-wong@home.com)
Date: Fri Mar 02 2001 - 12:57:42 EST


Problem with this is it corrects the speedometer/odometer bit not the ABS
systems expectations.

Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY

-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Victor Carrola, Jr.
Sent: Friday, March 02, 2001 9:33 AM
To: DML
Subject: DML: calibrating speedo on 2001 Dak

My 2001 4c4 Quad came with 265-70-16s from the factory. I have since
replaced the tires with 265-75-16s. This puts my speedo off by about
3%. Not too big a deal, but it throws off all the calculations on my
overhead computer in addition to the speedo and odometer being off.

I went to the dealer today to have them adjust the PCM for my new tire
size. Problem is the dealer says the PCM only has three available tire
selections: 215-75-15, 235-75-16, and 265-70-16. So your speedo will
only be correct if you use one of the listed tire sizes and have your
PCM programmed appropriately. After doing some research today I found
an interesting device that may correct my speedo
http://www.abbott-tach.com/era.htm. for $145. I had alerady checked
with Hypertech, but they don't have a programmer for the 4.7 Dakota.

I wanted to know
Can anyone confirm if these are the only three tires sizes available to
set the PCM?
Has anyone used this ratio adapter or a similar device?
Any other solutions?



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