Help Needed: CRD drive-ability issues, possible transmission problem

[400brad]

I have been chasing a problem with drive-ability issues in my 2005 WH CRD.
The car has been feeling under powered with excessively high fuel consumption.
After numerous visits to the workshop and focusing most of our attention on the engine itself we made a discovery at the last workshop visit that may be pointing to the transmission as the cause of the problem.

The car has not shown any fault codes to date.

We connected up the scan tool and accessed the transmission control module and discovered a few discrepancies with the following sensors:

Uphill Gradient: on level ground in the work shop the gradient is indicating -32%. by driving downhill the gradient indication will go further into the negative zone. The opposite happens when driving uphill, This indicates to me that that the sensor is working BUT may be out of calibration or needs adjustment. Does anybody know where this sensor is located?

Throttle position: There are 2 throttle position inputs available when connected to the TCM. unfortunately once again there seems to be a discrepancy in the reading. Both sensors do not indicate the same amount of throttle input.

I have attached screens shots from the scan tool for additional information. The scan tool being used is made by Auto Enginuity using their Chrysler enhanced software


Any Ideas???

[fil]

Two throttle readings due to fly by wire ? One for the pedal and one for the throttle control motor. It looks as though the throttle is only open 39% even though the pedal is fully depressed (100%)

If it is FBW try recalibrating the pedal sensor/throttle motor
maybe this is the cause of the gradient reading aswell?

found this proceedure on another jeep forum

Throttle Calibration
Throttle calibration can substantially improve throttle responsiveness over "factory standard." Many people notice what appears to be sluggish throttle response or a "dead area" at initial accelerator depression. Throttle calibration can take care of these.
1) Insert ignition key and turn to "ON" (not start).
2) Wait for all idiot lights to go out. Check Engine Light may remain on.
3) Slowly depress the accelerator pedal all the way to the floor.
4) Slowly release the accelerator pedal until it's all the way back up.
5) Turn the ignition key to "OFF".
6) Start the engine.

[400brad]

Thanks for the info,
I have tried a similar procedure in the past but it did not seem to make any difference.
I will try step by step again as described above.