88 Nissan Pathfinder heard a loud popping noise under the front suspension of the car while driving and then a winding down noise as i slowed down

Get the suspension springs checked. Park the vehicle on a flat, level surface with no-one in it. Stand back and carefully look at the vehicle. Sometimes when a spring fails the vehicle will lean towards the broken side. The tail ends of the spring can break off when they are old and the broken bits don't always fall out when it happens.
The stall could be something separate. Do you have any warning lights on the dash? If the charcoal canister is starting to fail it often causes the check engine light to turn on as it will affect the emissions. This will trigger other engine sensors to flag up a trouble code.

turbos normal make a whining noise under load noise may be present more then before if you have changed anything on the intake side sometimes it can be as little as a lest restricted air filter other cause is lose piping but some power loss would be noticeable if this was the cause
hope this helps good luck

use belt loosner spray first .

This is not a do it yourself project. It sounds like part of the front suspension has broken loose. It is possible that it is a wheel bearing or a drive shaft. Anytime you dissamble the steering wheels, you stand a good chance of losing control after you put it back together. This is one where a trusted mechanic needs to get involved.

Motor mount could be gone or low on transmission fluid.

It may be the CV joint. Have it checked out or replaced. The ball joint may also cause noise when turning when it has gone bad. Depending on the sound intensity, that may be an issue. You may have it inspected as well.

Check your brakes for excessive wear or uneven wear. There are metal objects attached to the brake pads, that when worn they touch the rotors creating a metal squealing sound. This serves as a warning to prevent additional damage to your braking system, replace if pads are worn. If this isn't the case, if 4WD have your shafts, hubs bearings checked, if 2WD have your wheel bearings checked. Hopefully this helps

same thing, get a used engine, ill sell u mine with 135K miles..
first it was my transmission at 87K, the whining came at 60K miles, but it costs 2K to install, just dump it or bring back for trade in, those dicks..

that sounds like a bad universal joint on the transfer case to the front axle. have that checked out

sounds like you need your transfer case looked at and repaired.....that the only thing i can think of...hope it helps :)