[tranceinate]

Edit: I did some searching before posting and didnt find much relating to this.

Fluid pressure sensor and shift solenoids were slowly going out when i purchased this car second hand. They failed one day and it wouldn’t drive; so I replaced the valve body after getting shift solenoids codes.

Fast forward a few weeks, I’m driving to work and something pops/makes a noise down there for a second, clutch disengages, lose all tranny power again and have to get towed home.

Original code for this issue was the Sensor A circuit. So I replaced what I thought was Sensor A, try to back the car up, still no power. Check the new code and now it’s sensor b. Check my Haynes manual and realize I’ve already replaced sensor b, so I go ahead and replace sensor A and cleaned out the harnesses. Still can’t get any power to the tranny.

Attached is a pic of the failed sensor B. Not seen is a chip in the sensor, presumably from that piece of metal I’m hoping isn’t my belt - although I’d have a code for belt catastrophe too, right? I’ve seen that code in a list.

Any help so I don’t lose my sanity would be much appreciated. <3 I’ve even traced the wiring harness back to under the air intake manifold and it all looks good, can’t see anything that would indicate a short anywhere. Unless it’s shorted under the manifold, cause I kinda can’t take mine off....stripped bolt =\

 

[amc49]

If that piece of metal was stuck to the sensor when it came out the sensor will cease to work, it absolutely cannot have a piece of metal stuck to it to read properly.

And if that is a piece of the belt straps that hold the hundreds of belt keys together to form the belt, you have much bigger trouble, the chain or belt is coming apart. Why it won't grab to drive the trans.

 

[Pandemonium]

I am having this code now too, thought it was my cvt failing, but there is hope

 

[amc49]

Dunno why you think that. That type of sensor is usually pretty reliable unless it gets physically hit or struck and pieces coming apart in a CVT are commonly a reason for that. Or really big metal chips from dead parts completely covering them to render the mag output inert. Another thing CVT does so much better than normal ATX, or fill the trans full of metal slivers to tear up everything.

 

[Pandemonium]

Wishful thinking is all, there is more than one sensor that could have went bad from what I have read.

 

[tranceinate]

Wishful thinking is all, there is more than one sensor that could have went bad from what I have read.

What are your codes and symptoms?

 

[tranceinate]

Dunno why you think that. That type of sensor is usually pretty reliable unless it gets physically hit or struck and pieces coming apart in a CVT are commonly a reason for that. Or really big metal chips from dead parts completely covering them to render the mag output inert. Another thing CVT does so much better than normal ATX, or fill the trans full of metal slivers to tear up everything.

Doesn’t matter if your belt snaps and you have to rebuild or in my case & many others, replace the entire tranny.

“Metal slivers tearing up everything” lol just change your fluid frequently and/or at recommended intervals or sooner. You change your engine oil, why not your transmission fluid(oil)? All fluids need replaced.

Don’t buy a Nissan cvt - you don’t hear about this shit with Toyota. If your tranny starts slipping or bucking - replace the valve body ASAP. Your shift solenoids are failing and/or clogging and not delivering enough fluid pressure. Not enough pressure causes slack in the belt. Slack in the belt causes damage. Too much damage and your belt eventually pops.

At least with an atx or manual you have other, actual gears to get you to and from. And a rebuild would actually be a viable, cheaper option than just throwing money at the same shitty CVT that’s only going to do the same exact thing again. What other trannies have class action lawsuits winning against them?

 

[Pandemonium]

What are your codes and symptoms?

P0965 powertrain and
P2765 powertrain input/turbine speed sensor B circuit
pretty much the symptoms listed here

P2765: Input/Turbine Speed Sensor B Circuit OBD-II Trouble Code

www.transmissionrepaircostguide.com

 

[Pandemonium]

What are your codes and symptoms?

P0965 powertrain and
P2765 powertrain input/turbine speed sensor B circuit
pretty much the symptoms listed here

P2765: Input/Turbine Speed Sensor B Circuit OBD-II Trouble Code

www.transmissionrepaircostguide.com

 

[Pandemonium]

This site is terrible, how do i delete multiple posts it keeps doing?

 

[amc49]

'What other trannies have class action lawsuits winning against them?'

Ford DCT.

CVT by the very drive method puts far more metal slivers in the trans oil, it's in the nature of the basic design. Why they have so much more magnet in the cases. There is not that much trans fluid changing possible to avoid it. Not at the prices the fluid goes for. And with how hard the magnets pull you don't get any metal slivers out, pull a pan after changing the fluid and look, most stays inside the trans. Waste of time changing fluid without removing pan.

The Nissan/Jatco issue is they are too cheap, they use low grade steels with crap heat treats that then wear out too fast, look at the dead parts coming out of the youtube teardowns. The valvebodies are not the only problem but more of same, the parts are aluminum with hardcoat on the aluminum valves, it wears off the same way and then nothing on earth wears like aluminum on aluminum. They could go to cheap cast iron valves like in the '60s and the bodies would be good for 50 years but no we don't do that.

Normal ATX uses 250 psi max oil pressure, CVT needs up to 800 psi for pulley clamping and another reason why the parts die so quick.

Toyota and others likely using better grade steels to make them last longer. Nissan being the land of Ghosn doesn't care.