I recently bought a 94 4runner about 3 months ago. I've been noticing that all of the 4runners of that body style tend to sit a bit lower in the rear. Some are worst that others. Is it a spring or shock problem, or is that how it is supposed to be?

 

All second, and most third generation Runners have the rearend sag problem. The problem lies in the weakness of the stock springs. About the only thing you can do to raise the rear is replacing the springs. Avoid going back to stock because of the obvious. Precision Products makes replacements that give ~1" of lift. Other options include Old Man Emu (OME), Downey or stock Land Cruiser coils. Each of those options yield ~2-4" or so and will give you a raked look. I went with the LC coils on my 2002 and got about 3.5" of lift. I'm using a 2.5" spacer lift up front. Good Luck!

 

I just did this today. I don't have any excuse as to why I waited so darn long (had the runner a while now). I have a shop, we do transmissions but I never have time to work on my own vehicles.

Last week I got the springs from NAPA, stock height variable rate springs. They list for like 130 but I only had to pay wholesale, 76 american dollars for the pair. I unlocked the door of the shop at 12:15 and was taking a test drive at 1:00.

The only things I took off were the swaybar mounts on the rear axle, 2 12 mm bolts per side, and the big bar that is behind the spare tire looking under from the back it runs from the frame diagonally to the rear axle just left of center, one 24 mm nut, and the bottom mounts on the shocks, two 17 mm bolts.
I lifted the vehicle and put the transmission removal jack under the rear axle first of course.

6 bolts and one nut. Couldn't be more simple. Just be sure to turn the spring so that the bottom is oriented properly, (if you do it yourself you will see what I mean by this when you look at the spring seat after the spring is removed.).

I am ABSOLUTELY amazed at what a difference it made to the overall ride comfort and cornering stability of the 4runner. I wish I had one of these jobs to do every single workday now. I could give them a deal and still put 75.00 in my pocket while they wait. I didn't even have to take the wheels off believe it or not both springs were removed and installed from the rear pulling the bottom of the spring out first.

Now if I could only find time for 4wheeling ....