I have a 2000 6 cylinder Xterra that was running fine before I went on a short vacation (5 days). When I tried driving the Xterra after the vacation, it started hesitating violently around 40 mph after driving for about 10 - 15 minutes. I put some gas treatment in and it continued to hesitate at all different speeds. I took it to a car repair shop, and after sitting overnight, the mechanic took it on a short ride and it did not hesitate. A diagnostic test found nothing and the mechanic could not get it to hesitate. A high detergent fuel cleaner was added to the gas. I drove the Xterra about 10 miles without a problem. The Xterra sat for a few hours, then I drove back home about 15 miles. The Xterra started hesitating and idling extremely rough for about the last 5 miles and it felt like it was going to stall.

Any ideas?

Thanks,

Alan

 

Sounds like a fuel filter to me.

 

I HAD THIS PROBLEM WITH OTHER CAR.
ONE MINUTE IT WAS RUNNING FINE, NEXT IT IS HESITATING, ALMOST CHOKING AND STALLING.
HAD TO TAKE IT TO MECHANIC SEVERAL TIMES (TUNE-UP, FUEL INJECTOR CLEANING).
HAVE YOU MECHANICCHECKFUEL DESTRIBUTION COIL

 

willing to say that its your distributer

 

Have themcheck the fuel pump out put before after the filter. Also have the throotle body throat check for dirt & also the butterfly& temperature sensor working properly