I know someone selling a 1992 Toyota 4Runner 4x4 with 86,000 miles. I'm curious about it, thinking play toy I can tow behind my S10. I would probably register/insure it though, cause I'd like to drive it to my local mudhole. What does the brotherhood know about these trucks?
Also, I got a chance to drive it today, since it was in the parking lot and I needed to go to Home Depot. I ran it hard at every stop light
and I never saw exhaust smoke or high temps. It has what sounds like valve train noises off idle, revving higher with my ear under the hood, I can hear a louder clatter, but don't know what it is. Might just be the fan clutch or something
. Smooth idle, good neutral revving and return to idle, and decent driving. It has the 3.0, ~28" Trxus M/T in great shape, auto trans, and 4x4. It has ZERO balls but moves decent once your 30+mph, just can't expect anything when the pedal meets the floor. The gear shifter and 4x4 shifter are both SUPER sloppy. It wont stay in 1st gear unless I hold the shifter, otherwise it moves into 2nd. The 4x4 shifter is also the same, moving easily from 4L to 4H. Neither really feel that positive. The 4x4 light on the dash does not stay on either, seconds after putting it into 4x4, it flickers and goes out. I only drove it 3 miles on road, tried 4x4 and didn't feel a difference...so I don't think it's working.
Other than the tires, it's completely stock. History is VERY unknown.
Even if I can get it for $400, I don't need a money pit, the Blazer swallows all the kind of money up already 
Also, I got a chance to drive it today, since it was in the parking lot and I needed to go to Home Depot. I ran it hard at every stop light
and I never saw exhaust smoke or high temps. It has what sounds like valve train noises off idle, revving higher with my ear under the hood, I can hear a louder clatter, but don't know what it is. Might just be the fan clutch or something
. Smooth idle, good neutral revving and return to idle, and decent driving. It has the 3.0, ~28" Trxus M/T in great shape, auto trans, and 4x4. It has ZERO balls but moves decent once your 30+mph, just can't expect anything when the pedal meets the floor. The gear shifter and 4x4 shifter are both SUPER sloppy. It wont stay in 1st gear unless I hold the shifter, otherwise it moves into 2nd. The 4x4 shifter is also the same, moving easily from 4L to 4H. Neither really feel that positive. The 4x4 light on the dash does not stay on either, seconds after putting it into 4x4, it flickers and goes out. I only drove it 3 miles on road, tried 4x4 and didn't feel a difference...so I don't think it's working. Other than the tires, it's completely stock. History is VERY unknown.
Even if I can get it for $400, I don't need a money pit, the Blazer swallows all the kind of money up already 

Sucks a$$ and is not an easy fix. aftermarket pumps dont have the plastic impeller though so it should be a one time fix
It happened to the guy I sold mine to also.