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2017 Sentra CVT Shudder/Hesitation at Low Speeds

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Ashley M. · rep 0 · May 22, 2:49 AM · 1 replies · solved · Question

Vehicle: 2017 Nissan Sentra SV

Hello Nissan owners,

I'm experiencing a concerning issue with my 2017 Nissan Sentra SV, which has about 70,000 miles on it. Lately, when accelerating from a stop or at very low speeds (under 20 mph), the car sometimes shudders or hesitates quite noticeably. It feels like the transmission is struggling to engage or is slipping.

There's no Check Engine Light on, and I haven't pulled any codes with my basic scanner. The problem is intermittent but seems to be getting more frequent. Once I'm up to speed, it drives smoothly, but the low-speed behavior is worrying me. I've heard about Nissan's CVT issues, and I'm hoping this isn't the start of something major.

Has anyone else experienced this with their Sentra or other Nissan CVT vehicles? What could be causing this, and what should I look into?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:49 AM

0

ClearTheCode admin answer:

The symptoms you're describing – shuddering or hesitation at low speeds, especially from a stop – are unfortunately common complaints associated with Nissan's Continuously Variable Transmissions (CVTs), particularly in models from that era. While a Check Engine Light isn't on yet, this is a significant driveability concern.

Here's what could be happening and what to investigate:

  1. CVT Fluid Degradation: Over time, CVT fluid can degrade, losing its friction properties. This can lead to slippage between the belt/chain and pulleys, causing shuddering. Nissan CVTs are very sensitive to fluid quality and level. If the fluid hasn't been changed according to the severe service schedule (typically every 30,000-60,000 miles), this is a prime suspect.
  2. Valve Body Issues: The CVT's valve body controls fluid pressure and flow to the pulleys. Internal wear or sticking valves can cause inconsistent pressure, leading to hesitation or shuddering.
  3. Torque Converter Lock-up Clutch: Problems with the torque converter's lock-up clutch can also manifest as shuddering, especially during light acceleration.
  4. Software Glitch: Less common, but sometimes a transmission control module (TCM) software update can resolve minor driveability issues.

What to do:

  • Check CVT Fluid: While not always user-serviceable, a technician can check the fluid level and condition. If it's dark, burnt-smelling, or low, a fluid change is the first step.
  • Professional Scan: Even without a CEL, a professional-grade scan tool can access the Transmission Control Module (TCM) for stored 'soft codes' or pending codes that a generic OBD-II scanner might miss. It can also monitor CVT operating parameters.

When to See a Shop:

  • Immediately. CVT issues can escalate quickly. Continuing to drive with significant shuddering can cause further internal damage.
  • A Nissan dealership or a reputable independent shop specializing in transmissions will have the necessary diagnostic tools and expertise to properly assess the CVT's health, check fluid, and recommend appropriate repairs, which could range from a fluid change to valve body replacement or, in worst-case scenarios, a full transmission replacement.
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