Hi All - first post here, but need some help. 2010 Nissan Maxima with the belt CVT transmission with 148,000mi.
This transmission is the Nissan RE090FB (Jatco JF010E) - in all V6 equipped Altima and Maximas. Car has been WONDERFUL with only basic maintenance. Very suddenly, Saturday, the transmission lost pressure (pulled fault codes P0868 - secondary pressure low) and the car wouldn't even make it up my driveway. My diagnosis is a messed up valve body, have new one on the way (for $1000) and highly doubt it is any of the mechanicals inside the transmission (pulleys, gears or belt).
Sent analysis. Everything is beautiful, except iron level of 91 at 43,000 miles, 117 at 111,000 miles and now at 145 at the time of failure. I consider this mildly abnormal, but not critical. What is your folks' opinion? Fluid looks great, not burnt, smells fine and has been changed every 40,000 miles.
Does anyone know anything at all about the typical wear signature of CVT's? I would imagine iron would be a little higher than traditional AT because of the belt drive, but unsure about this. I've scoured the internet trying to find out anything on this and have came up empty handed. I suspect the elevation in iron is due to A) using kit to suck sample out of dipstick tube and was scratching around with the tube on bottom of transmission pan (has never been removed or magnet cleaned) and B) drove it about 15 miles with a bad valve body (runs really good until it gets hot and then not at all).
Do you all think that iron of 145 is indicative of impending or failed internal parts in the transmission? Insolubles are 0.2.
What would you all do? Replace valve body and monitor or get entirely new transmission - that's my ultimate question?
Thanks,
Travis
This transmission is the Nissan RE090FB (Jatco JF010E) - in all V6 equipped Altima and Maximas. Car has been WONDERFUL with only basic maintenance. Very suddenly, Saturday, the transmission lost pressure (pulled fault codes P0868 - secondary pressure low) and the car wouldn't even make it up my driveway. My diagnosis is a messed up valve body, have new one on the way (for $1000) and highly doubt it is any of the mechanicals inside the transmission (pulleys, gears or belt).
Sent analysis. Everything is beautiful, except iron level of 91 at 43,000 miles, 117 at 111,000 miles and now at 145 at the time of failure. I consider this mildly abnormal, but not critical. What is your folks' opinion? Fluid looks great, not burnt, smells fine and has been changed every 40,000 miles.
Does anyone know anything at all about the typical wear signature of CVT's? I would imagine iron would be a little higher than traditional AT because of the belt drive, but unsure about this. I've scoured the internet trying to find out anything on this and have came up empty handed. I suspect the elevation in iron is due to A) using kit to suck sample out of dipstick tube and was scratching around with the tube on bottom of transmission pan (has never been removed or magnet cleaned) and B) drove it about 15 miles with a bad valve body (runs really good until it gets hot and then not at all).
Do you all think that iron of 145 is indicative of impending or failed internal parts in the transmission? Insolubles are 0.2.
What would you all do? Replace valve body and monitor or get entirely new transmission - that's my ultimate question?
Thanks,
Travis
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