Originally Posted by thenorseman890

Hi guys I am new to the forums.

I have a 1989 cherokee 4x4, its been in the family ever since i can remember. my dad gave it to me a year ago and i have been DDing it ever since. now its time to start upgrading. my friend and myself will be doing the work to it.

1 first off it needs a COMPLETE tune up. what do i need? just replaced the Orings on the fuel injectors. and the air filter. plan on doing plugs, plug wires, cap n rotter.
A tune up typically includes plugs, wires, entire distributer system, air filter, PCV Valve (If your Cherokee has one). It would be wise to do these things.

2 I have oil leaking into my air filter box. i have no clue why. guy at the auto part store said that oil in the air box could be a bad head gasket. how ever i have never heard of such thing.
That's a good one. Check to see if you have a vacuum leak. This could be a head gasket or intake gasket. With the motor running, take the oil cap off and see if the motor bogs down or attempts to stall. If so, you've got a vacuum leak. I'm not 100% on this because I've never seen/heard of oil in on the air filter.

3 buddy thinks i should replace ignition parts, such as distributor, and the part that sends the spark to the distributor. MSD or one of the cheaper off brands. thoughts?
Yes. MSD is a good brand if you've got the money. You could stick with MOPAR or use Auto Zone/Advance Auto/NAPA specials. It's up to you.

4 i have the throttle body style fuel delivery, keep it? go carb? what are you guys doing?
Well you've got a couple of things going on here. If you go with a carb set up, you're going to need to replace the intake set up and you'll lose fuel injection. You get better gas mileage and better throttle response with a TB set up. One thing you could do is upgrade to a different style injector. Search "Fuel Injector Upgrade" or something close to that and you'll find all sorts of information on this subject.

5 Transfer case is locked up at the moment because my dad never used it. any suggestions on a quick fix to attempt before i pay someone to go into it.
Oh boy. Are you sure it's the Tcase or is the linkage stuck? Try to lubricate the linkage first and see if that helps. If it is the Tcase, you may need a new (used) one or a rebuild.

have pics up in a little while.

Originally Posted by Nor-CalJeeper

One reason you get oil in your airbox is either your pcv needs replaced or if you have a jeep with no pcv alve you need to install one. There are a ton of writeups about older jeeps leaking oil into the airfilter box and it is a common problem. It is cause by the baffles located in the valve cover becoming blocked overtime and forcing the oil into the airbox.

There is nothing wrong with your jeep it just needs a pcv valve to quit doing that.

here read this about the oil in air filter

http://jeep.off-road.com/jeep/articl....jsp?id=257985

Originally Posted by thelaststarfighter13

Get a PCV from orielly's. They are cheaper and made of metal. At least mine was. Mine had the oil in the airbox too. that fixed it.

Just got to the parts store and get a distributor cap and rotor. Cheap wires and cheap *** champion spark plugs. Mine had a bunch of expensive crap on it threw it out and this combo is great. I got the bottom dollar AC Delco wires, champoin plugs, and I spent a little extra for the brass distributor. I bought a little bit of that DiElectric Grease to put on everything. Your jeepster will love you for it.

X2 on the linkage. Give it a good inspection. It might need lubes, It might be bent or something, just check it out.