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2001 Nissan Pathfinder with acceleration/fuel system problem

I have a 2001 Nissan Pathfinder that has been running perfectly. It has had regular maintenance and now has almost 80,000 miles on it. I went on vacation this past weekend and when I returned, I cranked the Pathfinder and It sputtered a little at first. I thought... No big deal... it's been sitting up for a few days... Then I pressed the accelerator. The engine revs fine up to about 2500 rpms, then after that it's like it's starving for gas... (vroom...vroom...vroom...vroom) I've had a it put on a diagnostic machine and the only thing that shows up is the Mass Air Flow (circuit). I've been told that you can clean the sensor and sometimes that alleviates the problem... That didn't work... I really don't want to take it to the shop until I know something about this problem... Does anyone have some knowledge on this subject to share...

Thanks,

Reply to
christopher.harper
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Sounds like it needs a new AFM. Not uncommon.

Reply to
JimV

That's fail-safe mode and it happened to my Altima when the electrical socket fell out of the MAF sensor. It would rev up to 2500 and then cut off. It also would stumble near idle or when decelerating, and stalled a fair bit.

I would start by checking the wiring to your MAF sensor, and reseat it a few times. With a code set and failsafe mode engaged, I would guess that it's something more than just a dirty sensor. I got a new-to-me one for my Altima from a salvage yard for less than $100 Cdn and it actually ran better with that than with the original.

Good luck,

Reply to
JM

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