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Home >> Mercury >> 1985 >> Lynx Base, 4D Hatchback, 1.6 2 >> Repair and Diagnosis >> Engine Performance >> System >> EGR System - Gasoline >> Trouble Shooting >> Part Throttle Engine Detonation
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Part Throttle Engine Detonation

EGR valve stuck closed. Leaky valve diaphragm, vacuum restricted to EGR valve, EGR disconnected. TVS and/or PVS not opening, load control valve venting, EGR passages blocked. Insufficient backpressure. EVP sensor "O" ring leaking or sensor loose (EEC).

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