pepo289

So yesterday i Flushed the CVT oil on my Maxima...
Old oil had signs of water ( flooded) .
After replacing the oil on the CVT pan,
I continued to flush the rest of the oil,
i used about 12 quarts, 4 for the pan, and 8 for the cleaning process.
1 quart at a time,
After doing that, My CVT is making bad noises, like its about to die...
Any help?
Yes i used OEM NS2.

Boslax6123

Did you just do a drain and fill or an actual flush. Don't recommend the flush as it will stir up debris and gunk that can severely damage the engine.

pepo289

Did a complete flush, because the oil had signs of water.
I read the FSM and said to replace OIL if water was present.
So is there any way to fix it?

Boslax6123

That I do not know, others may offer some advice. Check with a dealership too

pepo289

Anyone? any help would be apreciated.

esco115

iTrader: (1)

Mileage and MY? Your CVT should be under warranty still even if the car isnt???

zoemayne

iTrader: (4)

Why would you flush it???? SMH. We already told you on your other post not to do so. Its not the same as an Auto tranny. From my understanding your not suppose to never flush CVT transmissions. If its making hard grinding noises it's too late.

PetitFrereMaxima

iTrader: (2)

Wow. Sorry about that happening to your Maxima.

How did you discover the water in your CVT? Was your CVT slipping or acting up before you decided to do the flush? Or were you doing it for regular maintenance since you just bought the car? Did you buy from private seller or dealership? How long have you owned your car? I would try to take it back to seller. Though I guess you might not get any positive results since you have already dumped the fluid. Pull carfax to see if your car is was a flooded car.

I would do like others have said. Take it to dealer first. They will be able to give you a better diagnosis.

I have learned from here and a lot of other forums to never flush a transmission. It sucks that youo did the flush. And how do you effectively do a flush if you did not use the machines the dealership uses.

Our CVTS have 120,000miles warranty. I hope the dealersh is nice to give you a new tranny, if it ends up you need one.

shook187

iTrader: (5)

"because it had signs of water" :-\ I think you was over paranoid

pepo289

thanks everyone,
I bought the car used, flooded for 7500.
I replaced everything the car needed. And it works great now.
has 28500 miles.
The grinding noise its slowly dissapearing, i believe its all the debree that was inside the CVT and radiator.
The car had some work already, and you could drove the car. only some small issues.
I spent 2000 more on some parts. And the car now works flawless.
The previous owner told me that the CVT fluid was replaced.
But he told me he went to autozone.
So i knew that it didnt had NS2 fluid.
So when i removed the 10mm Allen torque screw from the CVT pan,
I then new the oil had some water, it was milky brownish look.
I didnt smell like burnt oil.
So i placed the new oil, and then proceeded withe the flush around 6 qt.
1 qt at a time.
I believe the sound will dissapear, after driving the car for 15-25min.
The sound is now not as notorious as when just did the flush.
Anyway i will put a magnet on the screw of the CVT pan. On the outside of course. The toyota CVT has a magnet on the Pan, the metal debree sticks in there.

pepo289

i used 12 qts in total
4 for the pan, and 6 for the flush.
2 for flush of the cvt with the 10mm allen torque removed, just to wash the CVT.

PetitFrereMaxima

iTrader: (2)

Thanks for all those details. Since the car was a flooded car, then no surprise finiding water in the cvt. But glad to do know the sound is slowly disappearing.

You took a big gamble when buying the car. Seems you have done a lot to make it be back to as good as it can be. So, keep fingers crossed that everything tuirns out great. I hope it does. You have done well with all the maintenance, so hopefully everything turns out great.

Keep us informed of its progress, if its ok with you.

pepo289

Yea, hopefully no more issues pop.
SO far so good.
I got paranoid when i heard those noises and though the CVT was gone.
I wonder why nissan doesnt have a magnet on the CVT pan lid , like toyota.
That simple thing might save alot of trouble.
Yea will keep you update.
I learn alot from this car, on all the parts i changed haha.

PetitFrereMaxima

iTrader: (2)

Glad everything is working out now. I hope it stays that way. What year is your Maxima? Got pics?

pepo289

no picture other than that one.
Will take more later.

4th gen maxi

iTrader: (1)

So you didnt exactly flushed anything. ? When you flush a system its the solvents in the actual mixture that eat seals and then you get leaks and metallic particles all over.
You explained just replacing new fluid from the old brown.That's good.
Noise is common on the clutches not engaging smooth.
Or did you not followed proper procedures. .

Ghozt

ive had countless mechanics tell me never to flush this transmission. only drain/fill unless you want it to break.

chrome91

iTrader: (1)

drain and fill is all you usually need. any automatic vehicles i own i just initially dump the pan, change the filter, put new fluid in, drain the fluid again in a few months, fill it up, and maybe drain it again a year or so after that. some dealerships wont even flush out trannies, just dump the pan and change the filter

pepo289

pepo289

This is what i exactly did.

http://my6thgen.org/f107/how-change-...822/#post48151

pepo289

if trouble doesnt go away,
I will drop the pan and clean it, Will use a coffee filter (metallic) to remove debree, and refill the cvt oil.
Will do this to remove the debree,
Will run car for 5min, and again, depending how much debree i can take out.
I dont know what to do, if its going to fail anyway, i dont have any options left.

pepo289

Why flushing the CVT oil causes this?
what exactly happens in the CVT? anyone?

Ghozt

it was explained above.

"When you flush a system its the solvents in the actual mixture that eat seals and then you get leaks and metallic particles all over."

in the link you just posted for the CVT flush, at the top of that there is another link; it shows the maintenance schedule and that Nissan recommends only a drain/fill. What the post doesn't go into unfortunately is WHY, and the reason is because it can damage the transmission.

GNCMaxima

I did the Drain and Flush and Im not good with cars (Learning process) lol but I did it and no problems.

My question is whats the CVT pan and filter?
All i saw was the 10mm bolt under the CVT

Ghozt

did you do the drain and fill? or flush? they're two different things.

GNCMaxima

Lol my bad I Meant drainn fill

pepo289

so i removed the oil pan of the CVT, the filter was clogged,
and it had alot of debree metlic particles, and the magnets
had alot of iron debree on them,
so i cleaned everything, i also cleaned the cvt oil with a metalic cofee filter.
After that, i put the oil back again,
and the car runs smooth as it should. No more whine or grinding sounds.

So my advise is, when ever you change the oil on the CVT, its a good idea to clean the filter an pan and magnets. Theres alot of metalic particles.
WHen the oil filter is clogged, oil wont circulate well and cause the CVT to whine or grind. If you ever do the complete flush, remember to clean the pan and oil filter and magnets as well.

pepo289

around the 10mm bolt, there are around 10 bolts or so, holding the CVT oil PAN.
When you remove them, the pan comes of, there are 2 magnets there holding the metallic particles, and you will see more bolts 10 more, that are holding the oil filter in place, you need to remove them to take out the oil filter to be able to clean it properly wich is the most important part.

Ghozt

that is great news man!

one thing is people need to know that a complete flush is almost never recommended; except in possibly extreme circumstances such as yours where you have a previously flooded vehicle. a drain/fill is all most people should be doing routinely - and what I'd recommend for you at your next interval as well.

pepo289

yea, thanks, i feel good now that she is ok.
Yup, i did that because it had water.
I would recommend on a regular drain and fill, to clean the pan and magnets and also clean the oil filter.

Ghozt

question - what magnetic bolt did you use? this sounds like a good idea for everyone to do.