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this is a part time 4wd, not AWD.
and as such must not be run on dry ice free pavement.
so post if car is on said pavement.
test 4wD in DIRT, does it work now, or not?
if you keep doing it on dry pavement this happens.
see here http://www.rubicon-trail.com/4WD101/driveline-bind.html
read the wiki on all system. and see what you can do and can not.
its not AWD, and has no CENTER differentiable gears.
have also had same problem, green light flashing on my isuzu trooper 3.0 check to see if drive prop shaft is engaged firstly, first step for front wheels engaging, then 2 more solenoids are under engine front of jeep, one coloured blue one grey, these work with vacuum, if i remember blue for engaging drive grey for disengaging, inside solinoids small tiny piston, could be stuck as mine was, can be taken apart & cleaned, reason sticking is moist in vacuum system, & not being used as 4 wheel drive until winter months, hope this helps
Turn the electronic transfer
case from "2WD" to "4WD Lock" to engage the high range 4WD, if the dodge
truck is equipped with an electronic transfer case; otherwise, shift
the transfer case lever from "2H" to "4H." The electronic transfer case
is located on the instrument panel and is marked with "2WD," "4WD Lock"
and 4WD Low." The lever-equipped transfer case is located to the right
of your leg and is marked with "2H," "4H" and "4L."
Shift the transmission into
"Neutral" while the vehicle is either stopped or rolling at 2 to 3 mph
to begin engaging in the low range 4WD. Turn the electronic transfer
case to "4WD Low," if the Dodge truck is equipped with an electronic
transfer case; otherwise, shift the transfer case lever from "2H" or
"4H" to "4L."
Tips & Warnings
Indicator lights will come on and alert you that your vehicle is in either the high or low range of 4WD.
Do not engage in the low range of 4WD drive if the transmission is in gear; you must shift to "Neutral" first.
trucks allow you to shift from 2-wheel drive to the high range of 4WD
at up to 55 mph--consult your truck's manual to ensure that this is
possible. Do not exceed 55 mph while engaged in the high range of 4WD.
Do not exceed 25 mph while engaged in the low range of 4WD.
Do not engage in 4WD unless you are on slipper or rocky roads.
check the shift motor on the axle for holes. sometimes the rust through. i've fixed holes before with dura-glass body filler. if there are know holes,remove the shift motor to check and be sure the shift fork is not broken.
There should be a lever shifter on the floor board with 2h- 4h-4L on the knob. Pull or push the lever to 4H then get out and go to the front axle. In the middle of the front tires there should be a locking front hub assembly, turn the selector to lock, do this on both wheels, your truck should now be in 4 wheel drive. To put it in 4L you need to havt the transmission in nuetral before you shift the lever. Once done playing make sure you unlock your front axel(hubs) and place the lever in 2H.
I cannot understand why u would ever need 4L but anyway try this: after not working once move your vehicle about 6 inches backwards then try again. if no results move veh fwd about 6 inches and try again. if this doesnt word, im lost. good luck. ps: dont engage emerg brake
I have a 93 full size blazer and might be able to help. First you need to ensure that your are actually not engaging the hubs. To do this, shift into 4H or 4L and try to turn very sharply. If it is difficult to move forward with the wheel turned all the way, you are probably in 4WD and the indicator light may be out.
If the truck drives as it does in 2H, your front diff is not engaging. If this is the case, there is a thermostatically engaged actuator that may have failed. These fail occasionally and can be purchased at most auto part stores or at the dealership. Before you buy a new one, use a voltmemter to ensure that voltage is present at the actuator when you engage 4H or 4L.
I know several companies make a manual pull cable style activator that can replace the thermostatically engaged unit.
Lost more info here: http://www.automotiveforums.com/t173603.html
I have to stop, engage 4H or 4L, and shift into nuetral and then the front gear box will then engage and you can hear it from nuetral and the engine at idle, it will slip into gear, if not, in gear go slow with 4x4 light "on" and while rolling slip into nuetral and then back into D, Some transfer cases will not engage in Overdrive, the D with a circle around it so shift into 3rd gear the one to the right of the D with a circle around it. 4 H has a speed limit, and do not shift into 4L while on pavement or you can do some damage.