1. What is Torque Converter Slip Percentage?

Torque converter slip percentage measures the difference between engine RPM and transmission input RPM, expressed as a percentage. It indicates how efficiently the torque converter is transferring power from the engine to the transmission.

2. How Does the Calculator Work?

The calculator uses the slip percentage formula:

Where:

• Engine RPM — Engine revolutions per minute
• Trans RPM — Transmission input revolutions per minute

Explanation: This calculation shows what percentage of engine speed is not being transferred to the transmission, indicating torque converter efficiency.

3. Importance of Slip Percentage Calculation

Details: Monitoring slip percentage helps diagnose torque converter health, identify potential transmission issues, and optimize vehicle performance and fuel efficiency.

4. Using the Calculator

Tips: Enter engine RPM and transmission RPM values. Both values must be positive, and engine RPM should be greater than or equal to transmission RPM for valid results.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a normal slip percentage?
A: Typically, 2-5% slip is normal in lock-up torque converters. Higher percentages may indicate issues.

Q2: When should I be concerned about slip percentage?
A: If slip percentage exceeds 10% consistently or increases suddenly, it may indicate torque converter problems.

Q3: How does slip percentage affect fuel economy?
A: Higher slip percentages generally result in reduced fuel efficiency as more energy is lost as heat in the torque converter.

Q4: Can slip percentage be zero?
A: In lock-up torque converters, slip can approach zero when engaged, but some slip is normal in non-lockup operation.

Q5: What causes excessive torque converter slip?
A: Worn internal components, low transmission fluid, contaminated fluid, or malfunctioning lock-up clutch can cause excessive slip.