dakota digital speed sensor caliibration

[Undre75]

I got a 1979 cutlass ls swap 5.3, I have a th350 trans with the Dakota digital sending until electrical speedometer and I've researched the hp tuner site and YouTube on how to calibrate my speedo. I got far as to putting in my numbers in the tire wizard on hp tuners and changed my speedo ratios. Now when I come to a stop, I have like a hunting idle. Any help would truly be appreciated.

[gtstorey]

A current version of your tune and a log of the problem is pretty much required every time. But making a new thread for every problem isn't. It would save you time explaining things to just add to your existing thread.

[Undre75]

A current version of your tune and a log of the problem is pretty much required every time. But making a new thread for every problem isn't. It would save you time explaining things to just add to your existing thread.

Ok, I didn't know, thanks

[Undre75]

a current version of your tune and a log of the problem is pretty much required every time. But making a new thread for every problem isn't. It would save you time explaining things to just add to your existing thread.

79 cutlass (My Tune) vss calibration.hpt
drive after VSS calibration.hpl

[Alvin]

It doesn't matter if the speedo is accurate in the scanner/ECM unless you are using that to drive a speedometer.

Often the sending units for older trans/cable speedo VSS things.. they aren't the factory 40 pulse per rev. Check your install instructions for the sender. There is a spot in the tune for VSS pulse per rev.

[Undre75]

It doesn't matter if the speedo is accurate in the scanner/ECM unless you are using that to drive a speedometer.

Often the sending units for older trans/cable speedo VSS things.. they aren't the factory 40 pulse per rev. Check your install instructions for the sender. There is a spot in the tune for VSS pulse per rev.

thanks for the information