Ok., Gary .. So if the minimum Revs per mile is 723 then it can't be done.
the 31 inch tire looks like it does about 660 revs per mile. I guess I
could have them get as close as possible by setting it to 723...
Does any one know how to work one of those portable interfaces that the
dealer has?? It would be great to be able to tell the tech excactly were to
go in the menus to do the recalibration.
Anyone........
.Anyone...
Beuller.....
Beuller....
----- Original Message -----
From: "Gabriel A. Couriel" <gcouriel@bellsouth.net>
To: <dakota-truck@dakota-truck.net>
Sent: Wednesday, August 13, 2003 3:57 PM
Subject: DML: RE: Tire Size/Speedo--Revisited
>
> that it total horseshit!!! the PCM can be recalibrated on all models
(after
> 97). take it to another dealer, and have them recalibrate it for you. i
am
> assuming that you have a 4x4 dakota, but on the 4x2 dakotas, the lowest
that
> the ratio can go is 723 revs/mile @45mph. i'm not sure of the heighest,
but
> i'm sure it's somewhere near 800. right now, i'm running 744, just lower
> than the original tiresize.
>
> the only way that the PCM can't be recalibrated is when the truck is a 97
or
> earlier, because they measure the speed through a gear at the rear of the
> transmission. on the 2000's, the measurement it taken digitally by a
sensor
> on the rear axle shaft.
>
> Gabe Couriel
>
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Craig Rash
> Sent: Wednesday, August 13, 2003 2:34 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Tire Size/Speedo--Revisited
>
>
>
> Noooooo! not this again!
>
> OK, I went to my Friendly Neighborhood Dodge Dealer at lunch today'
> cause I'm about to spring for the BFGoodrich AT 31x10.5s. I wanted to
> confirm with them that the computer could be reset to work with the new
> tires. I was able to get them to hook up the computer to find out. He
> went through the menus on his little portable and said that it COULDN'T
> be changed at all! I found this to be unusual because this model truck
> probaby came with several different tires from the factory. (maybe they
> are all the same dia??)
> He said that it all depends on which transmission is on the truck, and
> the transmission that I have does not allow for changing of tire sizes.
> The entry on my VIN sheet says... Transmission 4-spd. Automatic,42RE...
> I was hoping someone at a dealership could confirm their findings. If
> they are way off could you give me a run down on the menus as to were
> to go to get this done. This guy had a confused look on his face when
> going through the menus that did NOT instill confidence.
>
> TIA
>
> Craig Rash
> -------------
> 2000 Dakota Sport
> ClubCab
> Black
> 3.9 w/FABM
> JVC 12CD changer w/head unit
> See Pics at: http://mywebpages.comcast.net/2kdaksport/index.htm
>
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