1996 Mercury Sable Q&A
1996 Mercury Sable Question: Code P0401 read out??
Stop replacing parts until you get a complete diagnosis.Was the EGR port cleaned before replacing the valve? Will the engine stall imediately with egr pulled off or does it stumble and try to stay running? If it tries to stay running then you probably have a restriction somewhere that needs to be addressed. - ziptie12