reprogram 2001.5 K-H 325 ABS controller?

[McKeeJ]

I recently replaced my 2001.5 2500 QC 4X4 diesel 6-speed ABS controller with an exact P52010033AB match junkyard part successfully but it has the same weakness as the original - speedo reads about 10% slow (with 285/75R17). Did extensive ABS controller research and ran across references to programming the controller with a DRBIII tool. Anybody still in business with one of these obsoleted tools or a DRBIII Emulator? Know if tire size / pinion factor can be reprogrammed?
A little history: My controller had the standard ABS power transistor failure causing the pump motor to run all of the time with fail lights. Tried replacing with a P52110033AE from a similar vintage 1500. Pump did not run but ABS fail light on and 4WD light flickered constantly while moving; pretty sure that unit was no good. No VIN issues or other problems with current replacement but I pay no attention to the CE light since my VP44 is MIA and that generates a slew of codes.

 

[Ozymandias]

Autoenginuity can program it to, also a Smarty Tuner is capable of doing so.

 

[Road Dog]

The vehicle speed uses the ABS sensor in the rear diff and is programmable with most after market tuners. I didn't know it was in the ABS module. In my Edge programmer I can set the tire revolutions per mile to whatever I need.

 

[McKeeJ]

Autoenginuity can program it to, also a Smarty Tuner is capable of doing so.

Thanks Ozymandias, looked at the Autoenguity site and they offer lots of expensive hardware but did not see services (I sent them an email about that) so I will be looking for a shop (Denver area?) using the appropriate Autoenguity programmer to work on old Dodges. May solve this minor problem another way; probably going to 37" tires and 4.10 axles. My shaky arithmetic says that combination with current ABS controller settings may work out.

 

[Ozymandias]

The vehicle speed uses the ABS sensor in the rear diff and is programmable with most after market tuners. I didn't know it was in the ABS module. In my Edge programmer I can set the tire revolutions per mile to whatever I need.

Indeed it sits in the ABS Modul, but yes there are countless solution out there for programming tire size. Google help.

For my buddies 98.5 I simply bought a Smarty S03 so we have added Power as a nice benefit.

 

[McKeeJ]

Indeed it sits in the ABS Module, but yes there are countless solution out there for programming tire size. Google help.

For my buddies 98.5 I simply bought a Smarty S03 so we have added Power as a nice benefit.

i am running a P-pump in lieu of the Vp-44 so no programmer possible. Probably could come up with an add-in electronic box but would prefer to find someone with a DRBIII or emulator who wants to make a few bucks. Lots of things work on correct speedo but have lived with error for lots of years until ABS controller failed and I learned about reprogramming possibility. Plus my dinner napkin calculations seem to show it will come out about right (1% low error) if I can get lots of suspension/axle/gearing mods done - I have the parts, just not the motivation to completely rebuild/modify F&R suspension and axles!

 

[Ozymandias]

Cool, a P-Pump conversion, did you do it yourself or bought it that way?

 

[Road Dog]

i am running a P-pump in lieu of the Vp-44 so no programmer possible. Probably could come up with an add-in electronic box but would prefer to find someone with a DRBIII or emulator who wants to make a few bucks. Lots of things work on correct speedo but have lived with error for lots of years until ABS controller failed and I learned about reprogramming possibility. Plus my dinner napkin calculations seem to show it will come out about right (1% low error) if I can get lots of suspension/axle/gearing mods done - I have the parts, just not the motivation to completely rebuild/modify F&R suspension and axles!

Since the ABS sensor is counting pulses off the axle (diff ring) the gearing is irrelevant. Only the tire size matters.

 

[McKeeJ]

Cool, a P-Pump conversion, did you do it yourself or bought it that way?

PO paid the big bucks for the conversion. I bought it out of Salt Lake with 230K miles on it and misc other problems but the P-pump 6-speed is why I chose that truck. Close to 300K now - engine runs flawlessly, plenty of power, 20+ mpg.

 

[McKeeJ]

Since the ABS sensor is counting pulses off the axle (diff ring) the gearing is irrelevant. Only the tire size matters.

Have read that the two programmable options on tire size are the two sizes Dodge offered but the DRBIII had a third alternative - tire revs/mile over a very wide range. Don't know what axle ratio would have to do with ABS but many strange things going through that controller. Really surprised me when the defective controller I tried caused the 4WD light to flicker (in 2WD, very fast flicker) when moving. 4WD light almost never works when actually in 4WD. During the year and a half I drove it unplugged with no speedo/odo my overhead readout showed W and temp changed very infrequently and always incorrectly! Overhead works now with new ABS controller but 4WD light still MIA.
Brain light bulb came on, speed sensor counting diff carrier tone ring pulses; axle ratio no effect on speedo! Thanks! Wonder why they put in axle ratio variable unless for other application/part number that counts driveshaft sensor pulses? This means my calculations meaningless and speedo error with 37s will probably be about 16% low. Need someone with a DRBIII or find a correction adapter.