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Message: <blockquote data-quote="wingzee" data-source="post: 604695" data-attributes="member: 22730">Bump into this thread while looking for solutions to my problem. Had the same jerking/shudder issue around 2-3k RPM while cruising in 2nd and 3rd gear. Thought it was a one-off incident but it happens more frequent now. When it jerks, RPM went erratic (going up and down). If I let go or step more on the pedal, the jerk is gone. And it only happens when cruising at speed around 30 to 50km/h, nothing beyond that.Have not seek Optimum's diagnose on this yet but may do it this weekend. Thought of going over to M-Scope tomorrow.From what I have read, it's likely to be torque converter? Anyone knows the price for a new and used TC?</blockquote>