Two problems related to engine belts and pulleys have been reported for the 2004 Nissan Xterra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Nissan Xterra based on all problems reported for the 2004 Xterra.
Nissan uses faulty equipment in their vehicles and ashly at their consumer affairs dept actually told me that Nissan only expects their vehicles to last the 3 yrs or 36k miles!! since I purchased this vehicle I have had the a/c compressor replaces, all heater hosses replaced, oil leaks, coolant leaks, drive belts replaced and the alternator replaced. My car literally broke down in my driveway. I was returning from vacation with my son, my dog and my cat-if my trip would have 15 mins. Longer I would have broke down on the side of the road. Nissan does not stand behind their products at all and does not care about the consumer or their safety!!.
From the onset of the purchase I have been hearing a knocking noise in the engine the mechanics at the Nissan repair shops states that nothing is wrong , however the noise gets worst when you drive the car , for longer periods , I have had Nissan service the car but all they do is tighten the fan, the timing tensioner pulley , yet the noise is still there, Nissan north America has been contacted and so has the dealer to this day they cannot find the problem , nor are have they been able to identify the source.