GSXR Secondary Throttle Position Sensor Adjustment: A Comprehensive DIY Guide

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Adjusting the secondary throttle position sensor (TPS) on a GSXR motorcycle is a crucial step in ensuring optimal engine performance and fuel efficiency. This comprehensive guide will walk you through the process, providing detailed instructions, technical specifications, and a step-by-step DIY approach to help you get the job done right.

Necessary Tools and Equipment

Before you begin the adjustment process, make sure you have the following tools and equipment:

  • T-25 security Torx socket
  • Digital multimeter or ohmmeter
  • Clean, lint-free rags
  • Degreaser (optional)

Checking the Current TPS Value

gsxr secondary throttle position sensor adjustment

  1. Put your GSXR in dealer mode by following the manufacturer’s instructions. This will allow you to access the TPS value and make adjustments as needed.
  2. Locate the TPS on your GSXR and observe the current position of the sensor. Make a note of the reading or position for reference.

Adjusting the TPS

  1. Loosen the T-25 security Torx screws that secure the TPS to the throttle body.
  2. Gently rock the TPS left or right until the line on the speedometer is in the middle, with the engine off, key on, and the kill switch in the run position.
  3. To set the secondary TPS, use your finger to open or close the secondary throttle valve (STV) actuator, and adjust the TPS accordingly.

Measuring the TPS Resistance

  1. Unplug the TPS connector.
  2. Close the secondary throttle valves all the way by hand.
  3. Adjust the TPS until you measure a resistance of 1.6k Ohms between the outside two pins of the sensor.

Re-adjusting the STV Sensor

After adjusting the TPS, you may need to re-adjust the STV sensor to obtain the mid-point of the specified range. Refer to your GSXR’s service manual or consult a professional for guidance on this step.

Technical Specifications

  • TPS Screw Torque: Not specified in the search results.
  • TPS Resistance: 1.6k Ohms.

DIY Guide Summary

  1. Gather the necessary tools, including a T-25 security Torx socket.
  2. Put the bike in dealer mode and check the current TPS value.
  3. Loosen the TPS screws and adjust the sensor as needed.
  4. Measure the TPS resistance to ensure it’s at 1.6k Ohms.
  5. Re-adjust the STV sensor if necessary.

By following this step-by-step guide, you can ensure that your GSXR’s secondary throttle position sensor is properly adjusted, leading to improved performance, fuel efficiency, and overall engine health.

References

  1. GSXR.com Thread: How do I set the Throttle Position Sensor?
  2. Reddit Thread: TPS Adjustment on GSXR 750 Help
  3. YouTube Video: GSXR Throttle Position Sensor Adjustment
  4. Gixxer.com Thread: How do I set the Throttle Position Sensor?
  5. SV-Portal Thread: Secondary Throttle Valve Adjustment