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.
Cold Start System
The cold start system provides additional air and fuel during cold engine starts. It consists of an auxiliary air valve which provides additional air, cold start injector which delivers additional fuel and a thermo time switch which controls operation. The thermo time switch has a bi-metallic contact surrounded by a heating coil which is energized during engine cranking.
This switch limits cold start system operation to 5-12 seconds during extremely cold engine starts. When engine temperature is above 95°F (35°C), bi-metallic contact breaks ground circuit of cold start injector and cold start enrichment is by-passed.
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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.