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International Automotive Technicians Network
Re: Help with this TOYOTA COROLLA fuel Trim
Posted to Technical Discussion Forum on 5/29/2017

Downstream O2 sensor is mostly below 500mV it... There is a inconsistency between Fuel Trim and O2 reading...Also find no CAT leaks..I SEE NO OPEN PURGE,PCV OR EGR at Idle is rough but Car runs well above idle..

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