I run in Hi gear
Is there only high and low on the 2001 land rover discovery SD
No this is not possible. Modern Land Rovers are PERMANENT 4wd This does not however effect gas mileage so there is no reason to have the desire to reconfigure it to 2wd.
On the transmission selector you put your shifter in neutral position and then you can move the transfer case selector to high or low.
its probobaly broken get it a service
4L is the low gear in 4WD, 4H is the high gear. Most of the time, 4L is all you'll need to get out when stuck.
I'm guessing the low gear is for towing or climbing The high gear is for normal driving on road, the low gear when engaged lowers all the normal gears for driving cross country over severe terrain, something that very, very, few drivers of range rovers ever do.
Standard recommendation concerning coolant for the Discovery are mid to high end brands. Regardless of brand selected it must be replaced every two years for maximum effectiveness.
transmission ECU may be bad. i would recommend having the dealer look at it. overtime, the transmission will not get out of first gear without going into high revs.
Arent they full time 4WD? Only driver participation should be selection of High/Low and Diff Lock. Land Rover Discovery's are all-time all-wheel drive. In the Discovery I's, there was high and low-range all wheel drive mode, and the option to lock or unlock your transfer case. In the early Discovery IIs, I believe it was 1999 and 2000, the transfer case from the Discovery I was used in some of the Discovery IIs, but there was no linkage attached allowing the transfer case to be locked. From my understanding, however, it is possible to lock the transfer case if you crawl underneath the vehicle and turn a bolt. The Discovery II uses its traction control to simulate a differential locker, applying up to 80% braking capacity to a slipping wheel. This greatly improves its off road capability.
The gear with the more number of teeth is bigger.
High Gear - Whitecross album - was created in 1992.