I am having difficulty understanding your statements/questions. Perhaps you are addressing two different issues - that maybe related.
Is the first issue that, when you push the accelerator pedal, when in 4WD Low Range, that the engine will not increase RPM's? Then, when you turn off the TCS system, engine RPM's increase and van accelerates normally in 4WD Low Range? Additionally, there are no issues when in 2WD or 4WD High Range?
The second issue is that the brakes, when in 4WD Low Range only, seem to actuate the ABS system and cause a low brake pedal.
Am I understanding you correctly?
A couple of questions:
When in 4WD Low Range and experiencing these issues, is it with the front hubs locked or unlocked?
When in 4WD Low Range, does the speedometer read the correct ground speed or does it read a much higher speed?
Originally Posted by chetubi
I have (partly) the Same problem. So I am bringing this thread to new life.
2008 e350 V8 gas. Quadvan 4x4.
When i switch to low gear and push the pedal (Accelerator?)
... Nothing happens. Does not rev up. Van just starts driving at about 1 mph. Just when I push the "TCS" button it drives normally. Strange enough. (Any thoughts about that?)
No problems there in 4x4 high!
But often when i am driving in low gear (Tcs button pushed) and need to brake I have symptoms like in this thread. Pedal low. Just hesitatingly braking. Feeling somehow like ABS.
Here in germany not to much knowledge about e350 is acumulated.