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.
Exhaust Gas RECIRCULATION: Description
All Peugeot Diesel models are equipped with an exhaust gas recirculation system to reduce NOx emissions. A controlled amount of exhaust gas is introduced into intake manifold during certain engine loads. This lowers combustion temperatures and NOx formation.
The system consists of an engine speed sensor on the flywheel housing, 2 load sensors on the injection pump, 3 electrovalves, vacuum controlled throttle flap, 2-stage EGR valve, and electronic control box (ECB).
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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.