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Man I expect someone to jump from headlight washers not working to the IMS. LOL.... The precat 02 sensor output adjusts the injectors fuel pulse attempting a stoichiometric AFR. If reading incorrectly this can cause a lean/rich condition. A lean mixture can cause misfires as well as holes in piston from detonation if severe enough. I'd say the pre cat 02 sensor bank 1 is a likely culprit.
Last edited by 911monty; 07-09-2017 at 05:29 PM.
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