I've been searching the forums for a couple of days, but I guess my search-fu is weak.
New to Jeeps, new to 4wd, but not new to automotive/motorcycle mechanics. '94 YJ Sahara, mostly stock from what I can tell (except apparently a PO did the 20 gal tank "upgrade"). It's a DD, but I'd like the option to do some light wheelin' if the bug decides to bite.
Shifting into 4H doesn't do anything, shifting into 4L changes the gearing, but still no front drive. The front drive shaft spins, though. I called myself testing it before I bought it, but being a 4x4 newbie, the gearing change threw me off. I've since tested it on loose dirt, and the front axle is definitely not getting power. I know the "right" thing to do is go with a posi-lok & do away with the vacuum system altogether, and if I need to I will, but I'd hate to put the time & money into it if it's a simple vacuum line or fitting that can be replaced.
So *is* there a thread that I've missed that details how to test the stock system? I visually checked the vacuum line coming off the intake and the dual-looking fitting that goes into the vacuum switch (? circular bit on the passenger side of the front axle), and it "looks" ok, but looks can be deceiving.
Thanks for any info you can pass along.
PS: After doing the little things that should have been done before I bought it (117k miles & stock plugs, wire, dist cap & rotor???), I'm loving it! Took the hardtop and full doors off today and both my 14yo daughter and my German Shepherd thought it was the coolest thing ever!
Ah, thanks. I somehow saw & saved the pics and totally forgot the text. The first time I read it, what I comprehended was "the lines are probably shot, replace them. There are a couple of switches and a motor that may also be bed, replace them if the lines don't fix it." What I completely missed was "if your indicator light doesn't come on, it's most likely a vacuum issue."
There's a 4x4 light on all YJ's. if you have a clock, the light is illuminated in the Star Trek panel above the steering wheel. If yours didn't come with a clock, the circular gauge in the center bezel closest to the steering wheel will illuminate.
Haha star trak panel awesome! I know my 4x4 does not work thanks! Just wasn't sure if it had a light for it. Is there a wrong way to put the vacuum lines on the tc? J/w because my jeep needed a new trans before I could drive it.