Question about 2006 Nissan Xterra

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Nissan Xterra EGR valve troubleshoot

Engine runs really rough when trying to start, it sounds like one piston is running. I just had the car tuned up, new sparkplugs and I know battery is good. I believe it could be the Nissan Xterra EGR valve.

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  • Anonymous Mar 20, 2014

    Where is the EGR valve 2002 nissan xterra

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Check the EGR by disconnecting it to see if there is a change in the engine at idle

Posted on Oct 03, 2009

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If your truck is a 2006 4.0L it doesn't have an egr valve. May be throttle body or cam or crank sensor. Could even be battery or alternator. Mass air flow sensor. Good luck!

Posted on Oct 24, 2009

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My 1995 k1500 Chevy Silverado started running really rough today.when idling it sounds like it's missing but fine when I take off,but had no power and kinda sputters allittle.what can cause this


in need of tune up--fuel pump--fuel filter --bad coil pack -egr valve carboned up -cat converter clogging --throttle body needs cleaning

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Where is the egr valve on a 99 Ford expedition


The EGR valve is in a very difficult spot to work on. If the EGR is bad it will set off the check engine light and make the vehicle run rough or stall at idle. It really doesn't make it run rough while driving or accelerating. What are the conditions when the car runs rough?

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Is the 2004 xterra 3.3 v6 a non-interference engine? had the cam shaft sproket turn a 1/8 of a turn while doing a timming belt


I can't remember if that is interference or not but in reality even one that's not can still sustain damage if the cam timing is off by that much. 1/8 turn is around 45 degrees. In a non-interference engine you have at most, 12 degrees to play with as far as altering cam position (racers use that "window" to advance or ****** a cam for performance reasons). The only way to know before start up if there is a potential problem is to turn the engine slowly by hand two complete revolutions. Best is to actually put clay on a piston top and put the head on and do that, then measure how deep into the clay the valves went. If you turned the engine by hand and the engine refused to turn, AND you went no further, likely you did no damage. If you attempted to start it using the starter, chances are very high that you have either bent a valve, damaged a piston, or both.
If the engine is running, a bent valve will show up as rough running and a distinct vacuum fluctuation when using a vacuum gauge or backfiring through whichever valve is bent (with all else set properly).

Sep 06, 2011 | 2000 Nissan Xterra

1 Answer

I have a 1997 jimmy and it cranks up fine but it starts bogging down when i am driving and when i try to climb a hill


You may have a clogged up egr valve. When the egr valve gets clogged up with carbon, the truck will run rough, surge stall, and be very anemic on power. Is the service engine soon(check engine) light on? I've dealt with this issue before, and those 4.3 v6's tend to get egr issues. Try this: when it bogs and runs rough, stop truck, open hood, and tap on egr valve base( where it bolts to engine) if rough running clears up, there's your problem. Egr valve is located on front of engine just to the rt of alternator bracket.

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how about a simple tune-up?  Plugs and filters.

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2000 nissan xterra v6 xe 2wd auto trans quit running idling .


Well, I hate to inform you of this, but all Nissan engines except the V-6 that was used in the Quest mini-van up to 2003 are interference engines- meaning that if a valve is fully open and the corresponding piston travels to Top Dead Center (TDC), they will contact forcefully resulting in a bent valve.

I have seen this many times as most people don't want to spend the $500 to have their timing belt replaced.

Fortunately for you, Nissan cylinder head castings are built pretty strong. I have pulled the cylinder heads and replaced bent valves (be sure to "lap them in" with a good valve lapping compound) and reassembled the engines with fantastic results. Most engines have broken valve guides and valves and pistons, but Nissans typically don't break these things.

This is a very involved job and should not be attempted unless you have pretty extensive experience with the internal combustion engine, so I would recommend a trusted mechanic or, ultimately, your local dealer.

Depending on labor rate, you're looking in the ball park of $1500 for this repair.

I hope this has been helpful!!


Nissan Scope Technician- 10+ years experience in Nissan dealership.

Nov 16, 2008 | 2000 Nissan Xterra

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