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International Automotive Technicians Network
Re: what is causing this peculiar fuel trim at idle?
Posted to Technical Discussion Forum on 4/14/2014

HI thanks.I've connected test light to a purge connector then i see random brief [...] i plugged the purge line but i see no improvement & i also yank the pcv line & egr then i get check light.

Why the hell old & new O2's reporting lean respect to negative -... Login to read more.