2000 ford mustang, when in drive, and idling, surges, not sure why, seeking info.
Clean the throttle body, IAC and MAF. Search online on the proper way to do that. Also how old are the spark plugs and PCV valve? Could be vacuum leaks too. Check engine light on?
No check engine light, Plugs and wires less than a year, PCV original. need to start there. Thanks for the info!
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