Transmission works perfectly, without problem 90 percent of the time. However, the other times it wants to buck like it's changing gears or locking. If you turn the AC off, it will not act up at all.
Turn the AC system on, and it's back to the problem.
Nissan parts says a computer that costs 700 dollars or so is the likely problem. I think I found a used one at the junk yard but I don't know for sure what it looks like and exactly where it's placed.
Can you advise your thoughts.
Thanks for any help you can provide.
First thing i would try is unplugging your battery for 15 minutes, sometimes the tcm will record your driving conditions, say someone drives really fast it realizes this and shifts faster to accomidate the intense driving conditions, by doing this it should reset the computer, this is the cheapest fix i would try first, otherwise those guys may be correct. give the cheap simple path a shot first though, take care and good luck.
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Those would be some of my first guesses as well. You could begin to eliminate some of the culprits by flushing your trans. Take it to a quick lube or somewhere similar and get it flushed. Understand though, that if it's a fatal issue, and it's hanging by a thread, flushing could very well send it over the edge. I would highly recommend a transmission rebuild, as after 160k+ miles on a vehicle will put any transmission through it's paces. But flush first, and see what that tells you.
It sounds like the fluid level is not set correctly, causing the valve body to take air and miscalculate the shift. I would take the vehicle back to the installer and ask them to go on a test drive with you to verify the issue. Only then can they correct the problem. Is your check engine lamp on?
HI. the check engine light will illuminate when a sensor fault is detected. all sensors on your vehicle work in conjunction with the CPU on board. they relay information for the CPU to process. this information allows the CPU to initiate certain actions like fuel pump operation and proper charging of the battery and proper coolant flow as well. if one of the vital sensors start to malfunction and cant send and receive any information to the cpu, it will launch a self diagnostic alert , which is this check engine light. This will become illuminated to inform you of some sort of malfunction within the engine itself. the best thing now is to take this vehicle to the dealership for a quick scan. Once the problem is found, they can fix it and shut off the check or service engine light.
As for the life span of a Nissan transmission, these builds will last quite a while if you take good care and preform proper maintenance. The the normal life span of a typical mini van transmission is 100,000 miles. This nissan's transmission should get about 120,000 or more. The key to a long life span of a transmission is good care and proper maintenance like, changing the filters regularly and flushing the contents as well as changing the fluid every 60,000 miles.
SIGNS OF TRANS failure Slippage of any gear cycle. Hard shifting and abnormal grinding during gear changes on a hill. Miss shifts.(not being able to shift on time or sticking in a certain gear over the rpm rate) Black transmission fluid or metal fragments inside the transmission pan. Gear shift slipping out of drive or reverse is a failurepoint as well.