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 LSi, AutomaticFACTORY OEM SERVICE PROCEDURE
System/Component Tests
- Introduction
- Computerized Engine Controls
- Tracker ECM Resistance
- Engine Sensors & Switches
- Air Temp Resistance
- Coolant Temp Resistance
- Mat Resistance
- TPS Resistance
- Relays & Solenoids
- Fuel System
- Fuel Delivery
- Fuel Control
- System Performance Test 1 (Spectrum)
- System Performance Test 2 (Dwell Fixed Less Than 15 Degrees Spectrum)
- System Performance Test 3 (Dwell Fixed Between 15-50 Degrees Spectrum)
- System Performance Test 4 (Dwell Fixed Greater Than 50 Degrees Spectrum)
- System Performance Test 5 (TPS Wide Open Throttle Spectrum)
- System Performance Test 6 (Fuel-Cut System Operational Check Spectrum)
- Cold Start Injector (Prizm)
- Cold Start Injector Coolant Switch (Prizm)
- Cold Start Injector Thermal Timer (Prizm)
- Fuel-Cut System (Spectrum)
- Fuel-Cut System (Tracker)
- Fuel Injector (Metro)
- Fuel Injector (Tracker)
- Fuel Injector Resistance (Prizm)
- Fuel Injector Resistor (Metro)
- Idle Control System
- Ignition System
- Timing Control Systems
- Emission Systems & Sub-Systems
- Miscellaneous Controls
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.