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Re: 2012 Impala Will Not Run O2 Or Evap
Posted to Emissions Forum on 5/24/2018 2 Replies

Andrew, I have found with success on the O2 monitor is to check throttle angle and the pid throttle composition %. if the comp % is over 7-8% ive noticed it doesn't go into DCFO. clean the throttle, perform throttle resets and check that the comp % is now at 0... Login to read more.

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