2002 Nissan Xterra. Do I need a replacement key

check the fuel pressure and flow , if the pressure is low replace the pump, if the flow is low replace the fuel filter,the injectors may need some attention at that mileage.

Denver is only 5400 ft. above sea level. You shouldn't have to change anything. Sounds like your friendly local repair shop is'nt busy enough with real work.

BUY ELECTRONICS SPRAY CLEANER FROM ANY PARTS STORE, COST BETWEEN $5 AND $8 DEPENDING ON SIZE OF CAN. REMOVE THE MASS SENSOR AND SPRAY IT THOROUGHLY, WAIT TILL IT DRIES AND PUT IT BACK. IF IT STILL DOES'NT WORK REPLACE IT, PRICE ABOUT $98.

unless your xterra is supercharged, you really do not need to replace it. its a lot of work, because its located way down under the upper plenum and lower intake. its way down there. if it is supercharged, you do need to replace it, because it puts the supercharger into fail safe mode and truck till not run to its full potencial.

Just take it to your local lowes or home depot

Take the old freeze plug out, and replace with the appropriate sized one available from your local dealer, or put a rubber freeze plug in that has a range of size depending on how much you screw the center adjustment bolt/nut in.

Try your local parts store for a replacement freeze plug solution.

Good luck on this repair.

I recommend 60-90K Cost depends on the dealerships labor but usually when your doing a timing belt, radiator hoses and fan belts are removed and should be replaced while your in there. Its about 3hrs, more if other things need to be replaced while in there. So you looking at $300+ for labor only

Its probbly internal and the rackinpinion is were you would have to fill! check with a dealer or see if an autopart store may be of assisance

try www.autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

yes it probaly has a quick connect hose u can get this tool at any parts store it is called a fuel line dis connect