Q: Missing during idling

asked by on August 17, 2016

My car has gone 115,000 miles. Lately, I've noticed that it's missing during idling. It also occurs when I attempt to increase speed or when I go uphill. It usually happens with the throttle is full. I've tried to take it out of the overdrive. I also tried using fuel treatment. The problem is still present. What do you suggest I do?

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