Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Geo Tracker L4-1590cc 1.6LFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor: Service and Repair
REMOVAL:
1. Disconnect electrical connectors.
2. Remove the TPS attaching screw assemblies and retainer, (if applicable).
3. Remove TPS from throttle body assembly.
NOTE: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALLATION:
1. Install TPS to throttle body assembly, while lining up TPS lever with TPS drive lever on throttle body.
2. Install the two attaching screw assemblies. Tighten screw assemblies to 2.0 N-m (18.0 lb. in.).
3. Install electrical connector to TPS.
4. Adjust the TPS as per specification. Refer to Powertrain Management/Computers and Control Systems/Throttle Position Sensor/Adjustments.
1. Disconnect electrical connectors.
2. Remove the TPS attaching screw assemblies and retainer, (if applicable).
3. Remove TPS from throttle body assembly.
NOTE: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALLATION:
1. Install TPS to throttle body assembly, while lining up TPS lever with TPS drive lever on throttle body.
2. Install the two attaching screw assemblies. Tighten screw assemblies to 2.0 N-m (18.0 lb. in.).
3. Install electrical connector to TPS.
4. Adjust the TPS as per specification. Refer to Powertrain Management/Computers and Control Systems/Throttle Position Sensor/Adjustments.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.