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2018 F-150 10-Speed Transmission Shudder and Hesitation

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Mark S. · rep 0 · May 22, 2:28 AM · 1 replies · solved · Question

Vehicle: 2018 Ford F-150 Lariat

Hey everyone, I'm having some serious issues with my 2018 Ford F-150 Lariat, specifically with the 10-speed automatic transmission. It's got the 3.5L EcoBoost engine.

Lately, I've noticed a distinct shudder or vibration, especially when shifting between lower gears (like 3rd to 4th or 4th to 5th) at light throttle. It also seems to hesitate quite a bit when downshifting, almost like it's confused about which gear to pick. It's really noticeable around 30-50 mph.

I've heard about some TSBs for these transmissions. Has anyone else experienced this? What was your fix? I'm worried about long-term reliability and potential costly repairs down the line. Any advice on what to tell the dealership?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:28 AM

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ClearTheCode admin answer:

This is a commonly reported issue with the Ford 10R80 10-speed automatic transmission found in many F-150s, Expeditions, and Mustangs from this era. The symptoms you describe – shuddering, hesitation, and rough shifts – are classic indicators of potential transmission concerns.

  1. Common Causes:

    • Torque Converter Issues: A common culprit is the torque converter, which can cause shuddering as it locks and unlocks. Ford has released updated parts and procedures for this.
    • Valve Body/Solenoid Problems: Issues within the transmission's valve body or with specific solenoids can lead to erratic shifting and hesitation.
    • Software Calibration: Sometimes, the transmission control module (TCM) software can be updated to improve shift quality and address these concerns. This is often the first step a dealership will take.
    • Fluid Degradation/Contamination: While less common in newer vehicles, degraded or contaminated transmission fluid can contribute to poor performance.

  2. Potential TSBs/Recalls:

    • Ford has issued several Technical Service Bulletins (TSBs) related to the 10R80 transmission for various shift quality and shudder issues. It's crucial to have your dealership check for any applicable TSBs for your specific VIN. These TSBs often involve software updates, torque converter replacement, or valve body repairs.

  3. When to See a Shop:

    • You should schedule an appointment with a Ford dealership or a reputable transmission specialist immediately. Ignoring these symptoms can lead to more severe and costly transmission damage.
    • While specific OBD-II codes for shudder might not always appear immediately, a technician can perform a deeper diagnostic scan using Ford's proprietary tools to check for pending codes, transmission module faults, and live data related to shift pressures and torque converter lock-up. Common codes that might eventually appear include P0700 (Transmission Control System Malfunction) or specific gear ratio error codes (P0731-P0736) if the problem worsens.

Be prepared to describe the conditions under which the shudder occurs (speed, throttle input, specific gears) to help the technician diagnose the problem accurately.

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