I've replaced the solenoid with no change. Then replaced the egr valve too. Could there be an electrical problem in the wire. Engine light comes back on after resetting it. Wife took the car to Advance Auto to see what code would show. Code P0401, exhaust gas recirculation flow insufficient.
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2001 Mercury Cougar Question: I'm not getting any vacuum from my egr solenoid to the egr valve.
POSSIBLY YOU DEFE VALVE IS BAD OR THE HOSES TO IT ARE BROKEN