Scan Gauge Accuracy
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Senior User
Joined: Dec 2009
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Scan Gauge Accuracy
Has anyone run across accuracy problems with their scan gauge? I have been running one on my 06 since I replaced the EGR and oil cooler and have a steady difference of 4-5 degrees running at highway speed unloaded. It reads ECT 193 and EOT 198. However when I run the AE software under the same conditions I get ECT 192 and EOT 193. I know there could be some conditions affecting the actual driving conditions, but why does Scan gauge show 5 degrees different and AE only one? Which should I consider the most reliable? Thanks
Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 243
From: Saratoga Springs,UT
is the reading being rtaken at the same time
there is a couple diffrent EOT codes for scangauge to bring it together
The Very first thing I would be checking is the Coolant and oil temps after cold soak like 12 hours they need to be the same
this will test the accuracy of the SG AE and the temp senders to a point
there is a couple diffrent EOT codes for scangauge to bring it together
The Very first thing I would be checking is the Coolant and oil temps after cold soak like 12 hours they need to be the same
this will test the accuracy of the SG AE and the temp senders to a point
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
The ScanGauge and the AE report values that are on the databus, they don't really measure anything. The equation for the value from any sensor or the drive voltages to the actuators have already been resolved by the trucks ECM and the SG or AE simply reports the value. You can double check the values for your Xgauges just to make sure they were input correctly-especially the MTH. It may be possible to set the SG up where it's retrieving the value +5.
Some of the other guys here understand more about how this works but I believe the values we are using for Xgauges are correct.
Some of the other guys here understand more about how this works but I believe the values we are using for Xgauges are correct.
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