My apologies to all. Because various individuals have been stating that off
the beaten path wheel diameters have caused trouble codes I decided to
investigate further. You folks are absolutely right! If you go to far off
the beaten path the PCM does detect the difference. Smart a$$ little
device. There are speed sensors for the front wheels as well and
information from the front wheel sensors is input to the PCM which does a
number of comparisons over a set time and determines if the rotations it
sees from the front wheels matches what it is expecting from the rear wheel
speed sensor. If they don't match or come close it DOES indeed throw a
code.
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@dakota-truck.net
[mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of Jeff Durling
Sent: Thursday, August 01, 2002 9:00 PM
To: dakota-truck@dakota-truck.net
Subject: DML: Re: RE: RE: Need ABS and check engine help!!!
Something to do with the abs. When I changed my tires I had the computer
changed and the tech in the service dept. told me the wheel size and speedo
work off the rear abs. It may never throw a code for just and inch change or
it may take a while but it will definately throw a code with a drastic
change. I have traced this in my FSM but when I can find which box it's in
from moving i'll check.
Jeff Durling
'01 4x2 QC SLT+
----- Original Message -----
From: "Ronald Wong" <ron-wong@cox.net>
To: <dakota-truck@dakota-truck.net>
Sent: Thursday, August 01, 2002 9:37 PM
Subject: DML: RE: RE: Need ABS and check engine help!!!
>
> That doesn't make any sense. The rear wheel speed sensor senses the
> rotation of the wheel in back of the ring gear. What does it care what
size
> tires are on there? It'll just give you an inaccurate speedometer reading
> because it figures so many revolutions per mile which won't be true with
> much larger tires.
>
> 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@dakota-truck.net
> [mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of Gabriel A.
> Couriel
> Sent: Thursday, August 01, 2002 5:44 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: RE: Need ABS and check engine help!!!
>
>
>
> i've heard from the guys at my local dealership that if you change the
tires
> to a radical size, the ABS sensor my have some difficulties (to the point
> they've had to replace them because they short out).
>
> now, i don't know how accurate this is, and they told me this was the case
> on the jacked up daks.
>
> Gabe
> http://frontpage.tripod.com/fijigabe0
>
> -----Original Message-----
> From: owner-dakota-truck@dakota-truck.net
> [mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of
> Gk131273@aol.com
> Sent: Thursday, August 01, 2002 8:57 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Need ABS and check engine help!!!
>
>
>
> Hey all. I'm new to the list. My gal has 99 Dak Ram Air hood traction
bars
> etc. that I love to borrow. I replaced the tires with different size last
> fall. I rotated them about two weeks ago. Out of nowhere she got an ABS
> Brake light light on the dash. How do you troubleshoot the ABS system? I
> had a check engine light about a month ago and when someone pulled codes,
> told me my O2 was bad. I replaced it, but never reset the computer. I've
> tried to pull codes using the fancy ignition key dance. I get nothing but
> mileage on the display. Did the computer reset itself after the O2 issue?
> Does the key dance not help diagnose ABS issues? I've got an ext warr.
But
> I was hoping not to have to pay to transfer it from the previous owner.
> I've
> got about 4k miles till it's up. Thanks!
>
> Greg...
>
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:05:11 EDT