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How to Reset the PCM:

Disconnect NEG Battery Terminal

Turn the ignition key to the START position and hold for 15-20 seconds

Release key (OFF) and reconnect the battery


When should I reset the PCM:

If you change items such as the Throttle Body, Headers, Ignition System (or any internal parts with aftermarket, performance parts), then you should reset the PCM. Items such as: Plug Wires, Cap, Rotor, Spark Plugs, Muffler, and Air Filter (not intake...filter) don't require this at all. The PCM will gradually relearn as you drive anyway...that takes about 200 miles for a complete long-term learn.
 
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