Question about Nissan Quest
First rule: Black fluid is not happy fluid. Black fluid is old, prone to forming sludge deposits and indicates overheating inside the unit.
Change fluid on a trans in that condition and chances are enough gunk will loosen up to contaminate the valve body and shift solenoids. Driving after that happens ends any chance of anything but failure. I also wonder if there is a filter in the cooler which is now plugged up as well. (cleaning that won't fix the problem but not cleaning it will kill any unit you put in there.)
If you are a shop, sorry to say but you should have known better...you probably will "eat" this one.... Customer will say "but it worked before you did that" Tough to get out of, but they are essentially correct.
Bottom line is never service a transmission that has not had the fluid changed at anything even close to the recommended service interval.
It will bite you in the **** more times than not!!! (unless it's yours and you are willing to risk it)
Posted on May 25, 2010
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Posted on Jan 02, 2017
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