SOURCE: four wheel drive not engaging
Check the front wheel bearings for play and also while the wheel is off the ground lock the front hubs, grab the axle behind the wheel and see if it is engaged. If not then you will need to take the hub apart and find out what is broken.
SOURCE: The four wheel drive quit working while driving in
Your truck should have a solenoid attached to the front axel (more so to the right side). Unplug the solenoid and probe the harness. It should be two wires if not tell me. But it should have twelve volts on one and ground on the other (with the 4wd in-gauged) If that is fine remove the solenoid and see if it actuates when put it into 2wd and 4wd. If that checks out then the problem is either somewhere inside the front axel or maybe the transfer case. But the way you described it I would start with the front axel.
SOURCE: My 1999 chevy silverado 1500 four wheel drive
You probably have a bad encoder motor.It is located on the side of the transfer case on the drivers side.It is black.The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor.Hope this helps.Good luck.
SOURCE: I have a 2004 ford f-150 off road 5.4 liter. My
If this is a 2004 Heritage ( old body style ) and the transfer case is known to lock in ( check with truck jacked up, shift into 4WD and try to turn front drive shaft ), the next item to look at is the vacuum disconnect motor for the front axle. This is on the front axle, and will move when shifted into 4WD
It is item #10, on this parts diagram
If you do not have movement in this, check the vacuum lines with a vacuum pressure gauge, to see if vacuum is being applied ( Pink line is 2WD w/ vacuum is operation, Blue line is 4WD w/ vacuum operation ). If no vacuum at the lines, check them back to the vacuum shift solenoids
SOURCE: front brakes lock up
your brake calipers are stuck! replace the brake calpiers and won't hurt to replace the hoses at the same time.
FOUR-WHEEL DRIVE SYSTEM
(a) Four-wheel drive control
Use the four-wheel drive control lever and center
differential lock button to select the following transfer and
center differential modes.
The "H" and "L" position of the four-wheel drive control lever
provides either lock or unlock mode of the center differential
depending on the center differential lock button position.
Use the center differential lock system if your wheels get stuck
in a ditch, or when you are driving on a slippery or bumpy
surface. When the center differential is locked, the vehicle
stability control system is automatically turned off and the
center differential lock and "VSC OFF" indicator lights come on
because the function that controls engine performance
As soon as the center differential lock switch is turned
on, the "VSC OFF" indicator light comes on. After the
wheels are out of the ditch or off the slippery or bumpy
surface, turn the center differential lock switch off.
Make sure the center differential lock indicator light and
vehicle stability control system off indicator light turn
off.
"H" (high speed position, center differential unlocked):
Lever at "H", center differential lock button left out
Use this for normal driving on all types of roads, from dry
hard-surfaced roads to wet, icy or snow-covered roads. This
position gives greater economy, quietest ride, least wear and
better vehicle control.
"H" (high speed position, center differential locked): Lever
at "H", center differential lock button pushed in
Use this for greater traction when you experience a loss of
power, such as wheel slipping, in the center differential unlock
mode.
"N" (neutral position): Lever at "N"
No power is delivered to the wheels. The vehicle must be
stopped.
"L" (low speed position, center differential unlocked):
Lever at "L", center differential lock button left out
Use this for maximum power and traction. Use this for climbing
or descending steep hills, off-road driving, and hard pulling in
sand or mud.
In this mode, the braking feeling that occurs when the wheels
are negotiating a sharp corner is further reduced than in the "L"
(low position, center differential locked) mode.
"L" (low speed position, center differential locked): Lever
at "L", center differential lock button pushed in
Use this for maximum power and traction. Use this for hard
pulling in situations the vehicle cannot negotiate even in the "L"
(low speed position, center differential unlocked) mode. Also,
using this mode when driving down steep off-road inclines will
help contribute to increased vehicle stability.
https://secure.drivers.lexus.com/lexusdrivers/info/my-lexus/resources/submit-owners-manual-search.do
Please copy and paste the link above and it will take you to the lexus site. There you will find the owners manual and you can download whatever sections you need for free.
Hope this helps.
77 views
Usually answered in minutes!
×