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My 2000 Nissan Pathfinder runs good when first starting up but as it warms up it begins to sputter when accelerating and the rpms jump, but does't get good acceleration. I've replaced the fuel filter and pump as well as the temperature coolant sensor.
Re: My 2000 Nissan Pathfinder runs good when first...
Change your plugs and run a couple of bottles of injector cleaner through it. Sounds like you have some carbon buildup. Also check the catalytic converter for excessive back pressure. i hope this helps.
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Could be numerous things. My advice is try nissan pathfinder off road association. Google npora and join the forum. They have helped me with 4 of my pathfinders.
You need your idle speed adjusted, or you have bad gas, or you have dirty fuel injectors. I would put some injector cleaner in the fuel tank. Go fill the car up. Then if it doesn't improve by the end of that tankfull, I'd take it in for a tune-up.
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