4 wheeled drive does not engage
SOURCE: chevy s10 4 wheel drive will not engage
There is a vaccuum operated switch located on the transfer case that sends vaccum to the accuator that pulls a cable that locks the front end in. Check for vac coming in and out of this switch if no vac out replace it. This switch is a very common problem. You can find them at most parts stores in the help section #49315. please rate.
SOURCE: 4 wheel drive problem on Jeep YJ
you can also check the 4 wheel drive vacuum switch on top of the transfer case...got mine for 10 bucks from parts store...fixed the problem
SOURCE: 4 Wheel Drive Problem
Put the key in the run position and turn your 4wd on and off to listen for the electronic acuator to engage and disengage. If your can hear it then it's macanical and a Quick fix. On top of the transfercase on the driver's side, your going to find three vacuume tube connected to a cauume switch that may have gone bad. There common to go bad and there not the bad of a price at the Auto Zone. Check for any cracks on the vacuume line first then get your hands dirty. Good luck and keep an extra switch in your glove box.
SOURCE: Lights flashing on 4 wheel drive panel
the front actuator is not working..If you open the hood and under the battery is the plunger that pulls the cable for the 4x4..If theres a vacuum leak it will not in gage.It could also be the sensor in the transfer case..What you could do is you may have to pull the tray out that holds the battery in and see if the actuator/plunger has a hole in it..It looks like an old chevys cruise control but it is directly under the battery...You can pull the plunger in and try and move the car to see if it locks in to rule out any bad parts in the front axle..If that works the problems a little easier to figure out..Either the plunger has a hole in it and cant hold vacuum or theres a hole in the vacuum lines to it..The vacuum lines also run all the way back to the transfer case also so they could have a hole in them also.If those are all good then the sensor in the transfercase on the top of it and its either a three wire or four wire is bad..Hope this helps you have a great day
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589
SOURCE: 4 wheel drive will not engage 4 wheel drive button is pushed
bad trasfer case selector motor common problem i ve a ton of these replace that motor and youll have 4 wd again ,the part is costly about $ 300.00. hope this helps.
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