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.
Emission Control
The logic module controls the purge and EGR solenoids. When engine temperature reaches 145°F (61°C), the logic module de-energizes the purge solenoid. When de-energized, ported vacuum flows to canister urge valve and fuel vapors vent to throttle body.
The EGR solenoid is operated in the same manner when engine temperature reaches 70°F (21°C). No EGR occurs during idle or wide open throttle (WOT).
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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.