Hey guys, i have a few questions that have to do with 4wd on my l6 4.2 wrangler. I've had it for about 2.5 years, constantly replacing this and that, as it goes for many. I've finally got it running well, at least the best it has since i've owned it, so i wanted to move on to fixing the 4wd.
What i believe is called the "actuator", connected to the front axle on the passenger side, has a missing male piece where the vacuum hose would fit over to engage. Thats the first obvious weak point in the system. My question is, after replacing that piece, if it still wont engage, are there any other common problems i should keep an eye out for?
Second question is, will engaging 4wd amplify any imperfections in the engine or drive shaft? Like i said, i've been fixing it as i go and have it running pretty good, but its not new. I live in Ohio, and were having a very mild winter like many other states, and if fixing it at this point could cause DD problems i'd rather hold off. I've replaced the four U-joints along the drive shaft, but would any potential week spots be under a considerably larger amount of pressure?
Last, and i could probably find this answer somewhere... But would a locking system bypass a lot of potential troubles? With my tax return coming in soon i wouldnt mind spending the money on a kit if it would save a lot of hassle in the long run.
Thanks a lot for any advice.