Unplug the vacum on my 4x4 to get the 4 whelll drive to disengag
My truck is 1987 chevy s10 4x4 and the 4 wheel drive dont work right. everytime i have to unplug the vacum line from the pod to get to disengage. it will lock right in. i have to keep the line off the pod or it will lock in drive down the road
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Make sure that the vacuum hose connector is connected AND connected correctly at the transfer case and at the front differential. If that is all right and the front differential still doesn't engage, then you need to test the vacuum actuator at the front differential.
Good Lord! The FILTER should never be fuel soaked. I would have it given a full tune up, have the carb tuned, and then, for heaven's sake, check the distributor timing. That, and less importantly (I doubt it's the valves if it runs) the valve/cam timing. But mostly check that distributor!
There is a vacum actuator on the right side inner fender or under the battery box. Vacum line in one end, that operates a cable on the other end. This
cable engages and disengages the front axel.
Hope this helps.
there is a vacum maudual that screw's into the transmission were those three vacume lines connect,a little ball inside there moves up and down to controle the vacume ingageing and disengageing the 4 wheel, i had the same problem,replaced it and wooks great, you will have to go through a chevy dealer to get the part tho, auto-stores don't carry it. good luck
sounds like either a fuse or the do u have locking hubs that need to be engaged also when using 4 wheel drive there is actually only 2 wheels turning usually passenger front and driver back sometimes u also have to drive backwards to engage and also disengage 4 wheel drive finally it may be a transfer case problem check drive shafts and u joints make sure they are engaged
hey there i cant tell you what you are missing but i can tell you how to disengage the front wheels . ok you have a vacum line that runs right under the battery and a line that comes up from the front diff. to the same place ( you may have to remove batt and batt tray to get full access to this) un bolt it and temporaly put batt and batt tray back in start it up and decompress this and see if it comes out .... you should here clunking noise if it goes back in ... if thats the case just pull that big vaccum line off .... to test get all four tires off the ground and have some one put it in drive but dont hit the gas it should turn on its own ...if that dont work check the cable that runs down to the differental
I had a 90 S10 4X4 so I hope I can help. The front axle on this truck is locked by cable. The housing for this cable is found behind/around the battery. I found the vacume hose was falling off the plug and was not locking the front axle. When the truck is put into 4wheel, you can check the locking of the front axle here. Now if everything is working there, you might want to check the the transfur case is working. If the truck has electric it will have a electric motor on the side of the transfur case. If you have a manual shift on the transfur case then you would have to make sure that the rods are moving and locking into place. Hope this gives you an idea as to where to start looking.