Jett wrote:
I wish I could have manual mode for hiway driving. Looking at specs the gde econo tune says it has 5th lock at 58mph which is pretty close to what I already have so?
Do you think anyone knows what percentage of them actually came in for the recall? Is there a way to tell if a tcm unit has been ruined from the outside or must it be driven to test the shift points?
Huh. I wish I knew more about electricity, but I could imagine a simple hack where the speed sensor input signal into the TCM could have a resistor or a pot on it so that you could trick it into thinking you were going faster than you are, and the shift points would be adjustable that way. If on a pot you could get econo mode and sport/tow mode which I could consider the f37 program to be.
The only way I know of is to drive it and see where it shifts into TC lockup/overdrive.
The sensors are are mostly 3 wire sensors,
1. a ground,
2. actual waveform signal from the sensor
3. a 5 volt reference signal.
The TCM may look at engine speed, vehicle speed, and transmission speed as there are several speed sensors supplying information to it.
Nothing is simple on this vehicle....
_________________
Supporting Vendor and Moderator of LOST05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount98 Dodge Cummins 24 Valve