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, StandardFACTORY OEM SERVICE PROCEDURE
Throttle Switch (Metro M/T)
- With battery disconnected. Insert feeler gauge with a thickness of .012" (.3 mm) between throttle stop screw and throttle lever. Using an ohmmeter, ensure there is continuity between terminals "A" and "B" (idle switch). See Fig 1 . Ensure there is no continuity between terminals "B" and "C" (wide open switch), and "A" and "C".
- Insert feeler gauge with a thickness of .035" (.9 mm) between throttle stop screw and throttle lever. Ensure there is no continuity, between terminals "A" and "B" (idle switch), "B" and "C" (wide open switch), and "A" and "C".
- With throttle valve fully open, there should be no continuity between terminals "A" and "B" (idle switch), and "A" and "C". Terminals "B" and "C" (wide open switch) should show continuity.
- If results of test between terminals "A" and "B" (idle switch), is not to specification adjustment is possible. See ADJUSTMENTS article. If other terminals tested do not meet testing specifications, replacement is necessary.
Factory Service Tools
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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.