Question about 1998 Nissan Pathfinder
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Posted on Jan 02, 2017
check aux air control valve , thats what controls the idle it may be bad,also with that kind of mileage i would replace the mass air flow sensor ,do that first, good luck , the mass air flow sensor has alot to do with your gas mileage .
Posted on Nov 07, 2009
Well the head gasket job will cover the valve cover gasket ( you have to do one to get to the other) Bring it to a repair shop its about a $1500 job.
Posted on Apr 19, 2010
SOURCE: R&R EGR Valve 97 Nissan
It takes a 17 mm wrench to losen the tubing on both sides of the valve. Then it is a matter of unmounting the bracket and pulling off the vacuum line. Make sure that you losen both lines BEFORE unmounting the bracket or you will never get it off. Sometimes getting the tube fitting (flare nut) loose requires a flare nut spanner wrench. Some EGR vlaves on have one flare unt and have gasket under the EGR valve where it mates to the manifold. Make sure you replace the gasket if yours has one.
(flare nut spanner wrench)
I also recommend that you use a long piece of solid copper wire #10 to push through the tubes to remove the carbon build up.
It really is a matter of time. The most difficult thing about changing an EGR valve is getting the flare nut(s) loose.
Thanks for using FixYa.
Posted on Jun 22, 2010
SOURCE: Vehicle: 1998 Nissan Pathfinder
When the MAF on most vehicles reach a point of preventing the engine from starting, you can usually just unplug it and the engine will start. If that doesn't work-
You may want to try having the O2 sensor, ( Oxygen sensor ), checked. It works with other components of the emission system and can cause similar symptoms as the MAF, including preventing the engine from starting.
Posted on Feb 21, 2011
Testimonial: "Other similar issues are the cam position sensor, which is located inside the distributor. It's easier to just replace the distributor."
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