it sounds like your fuel is starting to go bad.......................
Replace the fuel filter first, sometimes they can be the problem. But usually it's a tired fuel pump.
I had a similar problem with a ford explorer once, I checked under the hood and found some air intake pipes/tubes loose and off, this may not be your problem but check that all air intake pipes and tubes are fitted firmly to where they should be.
Problem is most likely your alternator or your fuel pumps.
There can be several problems if your Nissan Xterra runs smoothly for 20 minutes and dies. One issue could be your battery. It is recommended to take your car to a mechanic to verify if you need to replace your battery for your car. . However, if the problem is with your transmission that is very expensive fix that usually cost thousands to repair.
air mass sensor?
Sounds like a fuel problem. First change the fuel filter. If the problem presists after this, look at other areas such as the fuel pump, fuel pressure regualator, etc.
If you have a 2003 Trailblazer which takes 5 minutes before it starts, there could be a problem with the remote start or the ignition switch.
also having the same problem. dont know what it is but would really like to know
My 92 PA did the same thing. I had to replace the crank sensor and then the cam sensor. Either one can cause this problem.
The mature stage may sometimes be prolonged by a tilted updraft, but for the most part all stages last around 10 minutes.
I would change your fuel filter
It is a common problem for shevy. Usually the Fuel regulator. Or for other vehicles it could be a dirty fuel filter