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Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Did you disconnect the battery when you replaced the alternator?
Let me know,thanks Pete
O.k., the first thing that needs done is to clean the throttle body bore.Disconnect the throttle body intake hose from the air filter and use a shop rag sprayed with carburetor or brake cleaner on the rag and wipe out the throttle body bore opening the throttle plate by hand slightly to clean it as well.Then once this is done perform this procedure below.If this does not work let me know.
1. a. Disconnect negative cable at battery for 20 seconds or more for the purpose of clearing calibration data of closed throttle position from memory in ECM. b. Connect negative cable to battery.
2. Keep ignition switch at ON position for 5 seconds or more without running engine.
3. Turn off key and back on again repeating twice more leaving on for 5 seconds each time
4. Start the engine.
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