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.
Throttle Switch (Fuel System)
A throttle switch located on the throttle housing has an idle speed contact and full throttle contact. The idle speed contact is closed and the full throttle contact open when the throttle is against the idle stop.
The idle speed contact is opened immediately when the throttle opens. Both switch contacts have double performance for the ignition and fuel injection systems and are also connected electrically with the EZF ignition control unit and LH fuel control unit.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.