You did not specify what year, the engine type and the transmission type the vehicle has. The pathfinders circa 2013-2020 used CVT's, so from your description of the problem, it sounds like the CVT is dying.
Rattling sound that starts at around 2200 RPM
When the engine revs to about 2200 RPM i get a noticeable rattling sound. When the RPM drops below 1900 the rattle sound goes away. Its very definite right at these RPMs and sounds like a pump or electric motor turning ON OFF at these preset RPMs. But...if im cruising at 40mph and I shift it to Neutral, and I free rev the engine past the 2200RPMs it does NOT make the rattling sound, which leads me to believe its a transmission issue?
Also, If i dont start the pathfinder for over a week it has a pretty loud rattling on startup. It doesnt do it if i drive it everyday
Also, If i dont start the pathfinder for over a week it has a pretty loud rattling on startup. It doesnt do it if i drive it everyday
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2010 V6 auto 4wd -- Rattle may be a wrong description, it kinda sounds like a pump or motor spinning up
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