Xc90 v8 chugs or cuts out when accelerating

first check No.5 spark plug wire closely...change if necessary....if good then change crankshaft position sensor.

There are numerous things that will cause this problem. If the check engine light is on, have the codes checked to see if there is a problem the computer has found to cause this issue. Even without the check engine light on, there may be a code stored. You can also do a visual inspection under the hood for any disconnected hoses causing vacuum leaks. These are the best places to begin with diagnostics

sounds like fuel filter or pump

The fuel filter is probably full of metal too. (fuel starvation) replace it.

What speed are you going when it chugs?
It could be as simple as a bad spark plug or a spark plug wire/boot grounding out.
When spark plug boots get old, the rubber cracks and lets voltage arc out the side and to the engine instead of through the plug.
This will be most noticeable when trying to maintain a speed of over 40 mph, or under mild acceleration.
The reason for being noticeable at this speed/acceleration level is that the transmission torque converter will be locked, transferring the vibration from any engine miss straight through to the wheels.

Not to scare or offend you but it could be many many things. It does help that the check engine light is on, though.
If you can go to a place like Autozone, where they check your check engine light for free, and post what the code was, I can give you a place to start.
I do not mind helping you further with a proper diagnosis procedure either, if you can share your vehicle information.

Sounds like a MAF(Mass air flow sensor, you can start by pulling it out, it's inside the intake box on this car. You can clean it with a high percentage isopropl alcohal or MAF cleaner, this sounds to be the problem, if it is really bad, you can unplug it temporarily, it will not have as much power but it will run better. If cleaning it doesn't fix it, then you will need to replace it, ensure not to touch the sensor itself at all.

Check your fuel pump or even your air intake could or might be loose or your putting cheap gas in your vehicle.
If your truck has a V8 I would suggest using 91 octane at Chevron or a Texaco.

CHECK FUSE AND RELAY FIRST IF THEY ARE GOOD.SOUND LIKE FUEL PUMP IS FAULTY.

This could be a multitude of things but my first suggestion would be to change the spark plugs. They are cheap and can be bought at any auto parts store.