http://autos.groups.yahoo.com/group/nissanxterraclubhouse/ Xterra Clubhouse Mon, 02 Nov 2009 14:15:47 GMT Pete Zizzi http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30526 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30526 I am having the same exact problem with my 2005 X.  i was below the minimum line for coolant and wasnt getting hot air when idling.  took it to nissan and Mon, 02 Nov 2009 04:00:19 GMT Kate Meakim http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30525 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30525 I went thru the exact same thing with my 2001 X after getting the time belt and wwate pump replaced. Give me a day and I'll pull out my paper work and see Mon, 02 Nov 2009 03:15:04 GMT christina_013@... http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30524 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30524 They did a pressure test on my coolant system and a block integrity test to see if there were exhaust fumes in my overflow. Both came back fine. BUT, I'm still Fri, 30 Oct 2009 15:14:55 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30523 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30523 I have a 2002 and shortly after the timing belt and water pump scenario was done at 110k, I almost overheated. It had run perfectly coming from the shop and if Fri, 30 Oct 2009 14:57:34 GMT P504 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30522 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30522 I also hava a 2001 & had the same problem @ 105,000 miles when I had my timing belt work done. The mechanic noticed wear & leaking around the intake plenum Fri, 30 Oct 2009 13:30:44 GMT Dolphus http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30521 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30521 I am having the exact same problem, I too have approx 140,000 miles and replaced the timing belt, thermostat, radiator, serpentine belts maybe a year or two Fri, 30 Oct 2009 01:52:53 GMT ChristinaD http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30520 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30520 I have a 2001 xterra with about 140k miles on it. I have (in the last 6 months) replaced the timing belt, thermostat, radiator, serpentine belts, and heater Sat, 17 Oct 2009 03:24:10 GMT likexterra http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30519 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30519 You don't really see the sharp bend, but you can tell that the rear cylinder has to travel forward a few inches to the point where all 3 come together before Wed, 14 Oct 2009 01:19:21 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30518 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30518 Yup, thats them. Small too. The shields obscure seeing if they are welded or whatever. I dont reember a sharp bend though. but then i havent been under the Wed, 14 Oct 2009 01:08:36 GMT likexterra http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30517 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30517 There are only the 2 styles, and the only year that had CA emissions was 2000, 2001-2004 were 50-state setup. the 2000 non-CA models were the same as far as Wed, 14 Oct 2009 01:00:50 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30516 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30516 Here's the text on the existing headers for the xterra. "comes with primary 02 sensors fittings. Sounds like plug and play. 2000-2004 Xterra 3.3L V-6 Tue, 13 Oct 2009 23:42:06 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30515 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30515 Nope, thats not mine. Maybe mine has a pre-cat but it is long and the pieces are welded last time I looked, LOL. Possibly Ca. emissions then ?? Or something Tue, 13 Oct 2009 23:17:36 GMT likexterra http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30514 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30514 Ed, here's one of the later manifold/cat units: http://home.comcast.net/~xterra/tech/04manifold.jpg Look like yours? Brent Tue, 13 Oct 2009 01:39:36 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30513 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30513 Thanks for clearing that up Brent. For people that dont know the particulars, its appreciated that you clarify. About the 2002-2003 exhaust manifold scoop, I Tue, 13 Oct 2009 01:30:06 GMT computered http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30512 http://autos.groups.yahoo.com/group/nissanxterraclubhouse/message/30512 wow, thats unbelievable. 400 is a whole different world.