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.
1988 Chevrolet Sprint TurboFACTORY OEM SERVICE PROCEDURE
Wide Open Throttle Microswitch
- Remove air cleaner and carburetor. Connect ohmmeter to microswitch. See Figure . Check that resistance between microswitch terminals is infinity.
- Open throttle valve gradually until ohmmeter indicates zero ohm. Using a vernier caliper, measure clearance between throttle valve and primary carburetor bore.
- Clearance should be .28-.33" (7.2-8.4 mm). If clearance is incorrect, bend WOT microswitch lever to adjust clearance to specification. See Figure .
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.