S2000 Under The Hood S2000 Technical and Mechanical discussions.

Engine runs lumpy after being driven hard

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Old 07-10-2014, 12:11 PM
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mine does this after auto crossing on hot days. just pop the hood let it cool and it should be normal again.
Old 07-10-2014, 12:32 PM
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If it's majorly lumpy you can try tapping on your map sensor. Mine randomly started acting up and all I had to do was the "whack method" lol.. Been fine since.
Old 07-10-2014, 09:04 PM
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Pull the negative battery terminal to reset the ecu, then perform the idle learn procedure.
Old 07-10-2014, 09:10 PM
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do you do cool down laps? also keep your hood open when the car is off as mentioned already
Old 07-10-2014, 10:09 PM
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Yes I always do cool down laps
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