05 Speedo/Odometer Mechanics
Thread Starter
Joined: Apr 2007
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05 Speedo/Odometer Mechanics
Hi all,
What method does the 05 Ram use to operate the speedometer/odometer? Is it all electronic or are there some mechanical means? Does the odometer depend on the speedometer?
What method does the 05 Ram use to operate the speedometer/odometer? Is it all electronic or are there some mechanical means? Does the odometer depend on the speedometer?
Champion
Joined: Aug 2005
Posts: 3,313
Likes: 8
RE: 05 Speedo/Odometer Mechanics
the speedo/odometer now gets its signal from the rear wheel anti-lock sensor mounted above the rear differential.
old post with info about changing the speedo to match tire sizes:
-----
originally posted by grfraz
Augusta GA
Here is the recipe.
1) Have the tech plug his hand held into the OBD port and turn it on. A menu
screen comes up with a bunch of info. Select YES to go to next screen.
2) On this screen select menu item 1, "DRB III Standalone" to go to next screen.
3) On this screen select menu item 1, "1998-2005" to go to next screen.
4) On this screen select menu item 1, "All" to go to next screen.
5) On this screen select menu item 5, "Antilock Brakes" to go to next screen.
6) On this screen select menu item 9, "Miscellaneous" to go to next screen.
7) On this screen select menu item 2, "Set Pinion Factor" to go to next screen.
8) On this screen there are a several tire sizes and Other. Select menu item 8,
"Other" to go to next screen.
9) On this screen there are two items, an Axle Size, (9.25" on the 1500's and
10.5" on the 25/3500's) and Other. Select menu item 1, "9.25" Axle" (10.5 in
your case) to go to next screen.
10) You have now arrived at the point in this process where you will enter the
revolutions per mile for your tire size. Select the menu box for RPM. It will
indicate 400. Here is where the tech will change the revs per mile with either
the up or down arrow. It will take a while to go from 400 to 604 (for the BFG
315's) so be patient. As you are waiting on him to finish, take this time to let
him know that he shouldn't charge you more than say $20.00, especially since you
trained him on this procedure.
11) The last step is to select "OK" and the changes will be excepted, then the
hand held will display "Reprogramming Successful".
Good luck!
======
There is an online Java calculator to compute revolutions per mile at:
http://pw1.netcom.com/~sgalaba/tiresize.htm
old post with info about changing the speedo to match tire sizes:
-----
originally posted by grfraz
Augusta GA
Here is the recipe.
1) Have the tech plug his hand held into the OBD port and turn it on. A menu
screen comes up with a bunch of info. Select YES to go to next screen.
2) On this screen select menu item 1, "DRB III Standalone" to go to next screen.
3) On this screen select menu item 1, "1998-2005" to go to next screen.
4) On this screen select menu item 1, "All" to go to next screen.
5) On this screen select menu item 5, "Antilock Brakes" to go to next screen.
6) On this screen select menu item 9, "Miscellaneous" to go to next screen.
7) On this screen select menu item 2, "Set Pinion Factor" to go to next screen.
8) On this screen there are a several tire sizes and Other. Select menu item 8,
"Other" to go to next screen.
9) On this screen there are two items, an Axle Size, (9.25" on the 1500's and
10.5" on the 25/3500's) and Other. Select menu item 1, "9.25" Axle" (10.5 in
your case) to go to next screen.
10) You have now arrived at the point in this process where you will enter the
revolutions per mile for your tire size. Select the menu box for RPM. It will
indicate 400. Here is where the tech will change the revs per mile with either
the up or down arrow. It will take a while to go from 400 to 604 (for the BFG
315's) so be patient. As you are waiting on him to finish, take this time to let
him know that he shouldn't charge you more than say $20.00, especially since you
trained him on this procedure.
11) The last step is to select "OK" and the changes will be excepted, then the
hand held will display "Reprogramming Successful".
Good luck!
======
There is an online Java calculator to compute revolutions per mile at:
http://pw1.netcom.com/~sgalaba/tiresize.htm
Professional
Joined: Aug 2004
Posts: 117
Likes: 1
From: 33.43.342, 84.21.602
RE: 05 Speedo/Odometer Mechanics
even though the pic is from a DANA axel, your 05 AAM axel works exactly the same way (and yes I snatched this pic from mayfairs post)
anyway the speed sensor reads the teeth on the ring the red arrow is pointing at. simple as that.
this way if you happen to do a regear or put in an aux transmission you dont have to worry about speed-o adjustments, only for tire size.
[IMG]local://upfiles/7365/7C1D74D6146D44FCBFDC61B4FB5648BC.jpg[/IMG]
anyway the speed sensor reads the teeth on the ring the red arrow is pointing at. simple as that.
this way if you happen to do a regear or put in an aux transmission you dont have to worry about speed-o adjustments, only for tire size.
[IMG]local://upfiles/7365/7C1D74D6146D44FCBFDC61B4FB5648BC.jpg[/IMG]
Record Breaker
Joined: May 2006
Posts: 1,497
Likes: 0
From: North Plains, Oregon
RE: 05 Speedo/Odometer Mechanics
Someone can correct me but before I bought my 06 I looked at a 2005 that had an 11.5 axel. Yet what Hank posted above only shows a10.5 in for 2005. So was the truck I looked at a late 05 or did they all come with 11.5 rear axels in 2005? I really don’t want to be posting or passing on incorrect information.
