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.
2.6L Engine
Dual EGR system has primary and secondary valves which respond to different carburetor vacuums in response to throttle openings. EGR operation is suspended at idle and wide open throttle.
Primary valve controls EGR flow at relatively small throttle opening angles. Secondary control valve allows recirculation of exhaust gas into intake mixture at larger throttle opening angles.
Vacuum applied to dual EGR control valve is controlled by thermo valve. Sub-EGR valve is directly opened and closed with motion of throttle valve through mechanical linkage.
Two thermo valves sense coolant temperature at intake manifold and prevent operation of dual EGR valve below preset temperature of thermo valve.
NO RELATED
Use the Manual With the Right Hardware
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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.