Will a diff out of a 99 pathfinder fit a 99 pathfinder

Left light
Pink/black tail light
green/yellow stop light
grey/bue turn
black ground
Right
pink/black tail
green/yellow stop
grey/red turn
black ground

It's not really that hard if you have the proper tools. I changed one out my 99 Pathfinder in roughly about 2 & a half hours.

No it means that it is working properly. The problem is further in . Nissan produced a series of vehicles that used a limited slip diff in the front axle as standard and I suspect that you are trying to make the diff action work. IN 4wd with 3 wheels on the ground the 4th wheel would normally turn in the diff in the side gears but if it is difficult to turn I am thinking that you have a LSD in the front.

Search from over 10 Million Auto Parts 1997 Nissan Pathfinder Engine Knock Sensor for V6 3 3L Wells

From what I can tell the knock sensor for the 97 & the 99 are the same part., So the swap should work.

Check for broken rear upper and lower trailing arm bushings that attach to the differential.

when in trouble replace the whole diff housing for the new 14 bolt diff. from the wreckers.

more info. is needed, CAR-PARTS.com, all the bone yards in the unitied states, just put the info. they ask for and review what years, make, models that fit your application.
Please rate your mechanic

will take lots of work because in addition to the obvious like a transfer case and drive shaft plus front diff you will also need a totally new wiring harness and computers

I looked it up and it shows that these engine have diff. sensors to comunicate with computer and possible exhaust and intake are diff.,
check it out, 94 has OBDI the 98 has OBDII
I put the engines next to each other and compair,
94 engines are all by it's self.
98-99 engines are interchangeable
Good luck

Probly need to get the whole manual. Amazon can direct you to the right store to do this.