1991 Jeep wrangler 2.5 standard shift.vacumn lines from transfur case to front drive axle.we need a picture of where each vacumn hose goes. a print out of the colors. thank you
Re: 1991 Jeep wrangler 2.5 standard shift.vacumn lines...
I just boought a 1992 Jeep Wrangelr sport with a chevy 305 V8 and its a automatic with a standard 4 wheel drive and i put in 4 wheel drive and the front tires wont move what is wrong????
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remove the vacuum hose from the shift motor on the front axle.with the vehicle running,(be sure to set parking break and /or chock tires.) place your finger over the end of the hose check for vacuum,it will be very slight. if there is no suction it is probably the vacuum switch on the transfer case. if there is vacuum,first check the vacuum motor for holes.(they rust through sometimes.) if no holes are noticed, remove the shift motor and check the shift fork. if the 4wd indicator light comes on it is probably the shift fork.
you have a vacumn actuator on the passenger side front axle tube that engages your front axle when put in four wheel drive. those are notorious for not working
The front axle connects 4wd by vacuum. check the vacuum hoses that run to the actuator. Pay close attention to the vacuum hoses running underneath the battery as battery acid can eat thru those hose easily. Good Luck.
there is a vacuumswitch on top of the transfer case it appliesvacuum when the truck is shifted in to 4 wheel drive . if you connect it to direct vacuum you front axle will be engaged all the time
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.
Our Jeep Wrangler YJ's are equipped with a vacuum module on the front axle. It is used to engage the front axle when the transfercase is shifted into 4WD. Check the vacuum lines on the front axle to make sure they are connected. The passenger side axle shaft has a disconnect sleeve that is moved left and right by the vacuum.
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