Car drives a little while then the transmission stops shifting gears

Hi:

Is the fluid clean and full? This could be something as simple as a partially plugged filter. When you turn it off, dirt can settle back into the pan. When it is running, the fluid circulates again and can cause the filter to plug and drop line pressure in the system.

Here are directions specific to your vehicle for checking fluid condition and level. The attached pictures correlate with the directions.

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2005 Nissan-Datsun Maxima V6-3.5L (VQ35)
A/T Fluid Check
Vehicle Transmission and Drivetrain Automatic Transmission/Transaxle Testing and Inspection Initial Inspection and Diagnostic Overview Initial Inspection A/T Fluid Check
A/T FLUID CHECK
A/T FLUID CHECK

Fluid leakage and fluid level check
Inspect for fluid leakage and check the fluid level. Refer to "Checking A/T Fluid".

Fluid condition check

pic 1

pic 2

Inspect the fluid condition.

Let me know.

Joe