Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 2 replies - 1 through 2 (of 2 total) Author Replies November 5, 2015 at 7:22 am in reply to: 99 Tahoe Rough idle in closed Loop #843761 Evan BilancioParticipant Alright how about pre converter o2 sensor? November 5, 2015 at 7:18 am in reply to: 99 Tahoe Rough idle in closed Loop #843758 Evan BilancioParticipant How about checking coolant temp sensor and its input with a scanner. Author Replies Viewing 2 replies - 1 through 2 (of 2 total)