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.
1989 Geo Tracker L4-1590cc 1.6LFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor: Service and Repair
Adjusting TP Sensor:
Inserting Terminals:
REMOVAL:
1. Disconnect negative battery cable.
2. Disconnect throttle position sensor connector.
3. Remove throttle position sensor wire harness terminals from connector after unlocking terminal lock.
4. Remove throttle position sensor from throttle body.
INSTALLATION:
1. Install Throttle position sensor to throttle body. Fit sensor to throttle body in such a way that its adjusting holes are a little away from sensor mounting bolt holes and turn sensor clockwise so that those holes align. Then hand-tighten sensor mounting bolts in aligned holes.
2. Insert throttle position sensor terminal into connector and check to make sure that they are locked.
ADJUST:
3. Installation angle of throttle position sensor according to procedure described in item ADJUSTMENT PROCEDURES, under THROTTLE POSITION SENSOR.
4. Connect negative battery cable.
Factory Service Tools
Use the Manual With the Right Hardware
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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.