1998 ranger 3.0 4x4

im trying to change my speedometer with IDS for the 33's

i only have RABS

i go into IDS, module programming, programmable perameters, axle ratios and tire size...

now i want to change my axle from a 7.5 to an 8.8 because there is a 7 tooth difference on the reluctor ring. i also want to change my tire size to 611 revolutions per mile.

it says that the IDS will not communicate with the ABS module because it may be optional. i know i have ABS, i have the light on the dash and it works from time to time. It has me perform a self test and it always fails

Now what??

 

if it will not communicate with the abs module. you most likely have a problem with ur abs module itself or a wiring problem to the module.

 

thats what im thinking but i am not sure if there is a seperate port for the ABS diagnostic on RABS

 

its the same port. and i know it can be done.

 

Justin, since you have RABS, the speedometer setup is done in the GEM. Only the 4WABS trucks do the setup in the 4WABS Module (98~2000). You should be able to access the GEM through the DLC using a NGS or IDS.

 

bob, you always save me. i will look in the GEM module. do you think i can change my tire size in the GEM or my abs reluctor ring tooth count?

 

Yes, I did it with my V8 conversion. You can change the tone ring count and the revs/mile.

 

ok thats what i need to do. i found where to do it in the ABS module but it wouldnt let me. ill have to figure out how to do it in the GEM module

 

im gonna stop up to my work now and try it on IDS, ill let you know how it works out!!

 

so im back, no success again..

i go into module programming > programmable parameters > tire size/axle ratio > i change my axle reluctor ring from 102 tooth to 108 tooth (7.5 to 8.8) and then i select tire size and i enter 305/76r16 which is 613 revolutions per mile (33s are 614) and i click the check mark.

it just takes me back to the mail "toolbox" screen and says nothing.

or if i select a pre programmed tire size, 265 being the largest, it says unable to communicate with ABS module, so i run a self test and it says there may be something wrong with the module.

im not sure how to tell what is programmed into the computer now to see if it has changed, and im not sure if i should try to replace the ABS module and try again? Bob? anyone?

 

For your 98, the RABS Module only does RABS. The speedo correction is done in the GEM. I don't remember the exact procedure but I used an NGS to set mine up.

 

i will have to try NGS, the only way on IDS to access the tire size is the ABS module, i tried to get into the GEM in programmable parameters and in module reprogramming and it wouldnt work.

do you know what i go into in NGS? im an NGS noob

 

No, it's been a year and a half ago and I've only programmed it for tire diameter the one time. For your truck, I would look for an option to select RABS or 4WABS. Maybe that will work.

 

Im going to try the NGS we have at school, the only unit we have at work is IDS. We have IDS, WDS and NGS at school so hopefully i can do it there

Do you know the least amount of rotations i can enter? meaning, can i enter 614? the largest tire size programmed in the IDS is 265/75R16 and 31x10.50R15 so i hope i can go larger than that

 

I think that there is a lot of latitude on revs/mile for 98~2000.