carczar

I JUST BROUGHT A 1995 PATHFINDER 4X4 WITH L,S,D, WHEN I DRIVE I HEAR A GRINDING GEAR NOISE FROM THE FRONT I PUT THE TRUCK IN REVERSE AND THE FRONT WHEELS LOCK AND WILL NO GO REWARD I HIT THE GAS AND I WILL DRAG THE FRONT WHEELS WHEN I DRIVE FOWARD THE GRINDING GEAR NOISE IS LOW AND THE DRAG IS REAL BAD UNTILL SECOND GEAR THAN GRINDS ALOT SHIFTS TO 3RD GETS LOWER I SHIFTED THE 4X4 LEVER AND SOMTIMES I BACK UP 3-5 FEET WHEN I COULD AND IT WORKS FINE THAN I WILL DRIVE 5-10 MILES AND COME TO A STOP STOP AND THE GRINDING COMES BACK IT HAS 215000 AND AUTO HUBS ,COULD IT BE TRANSFERR CASE FRONT DIFF OR HUBS THEMSELVES WHAT TYPE FLUID DO YOU USE FOR TRANSFER,FRONT DIFFERENTIAL TRUCK HAD A LOT OF FLUID ON UNDERCARAGE I CHECKED IT AND IT LOOKED LIKE OIL I HOPE I DID NOT WRECK THIS TRUCK PLEASE HELP ME I CANT AFFORD TO LOSE THIS TRUCK THANK YOU BOB

Xeno

First off, quit driving it.

1. Verify that it is NOT in 4 Wheel Drive.

2. Block of the rear wheels (so it does not roll in either direction).

3. Jack up the frount end and place jack stand under it.

4. Verify that the brakes are not seized.

5. Take vehicle out of park.

6. Spin each wheel and locate problem.

7. Take apart one wheel at a time, verifing if the axel shaft spins.

Look at the lock out hubs,bearings,half shaft(if you have any).

If those are not the problem you can jump to removing the transfer case drive shaft (or you can do this before other steps?) and see if that frees up the frount wheels.