Should replacing throttle body solve RPM prob?Will relearning solve RPM issues?

Which engine is equipped with your Mustang? If you have a warning light, a diagnostic test must be performed to find out what has failed. If it was related to the electronic throttle body, then once replaced, the trouble codes must be cleared, and the system retested for proper operation. There is no further required actions other than replacement of the part to replace the throttle body successfully. If testing yields continued concerns, further troubleshooting is required to find out why you are experiencing the warning light and limited performance.

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