S2000 Under The Hood S2000 Technical and Mechanical discussions.

Rough idle and rpm

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Old 03-25-2019, 07:50 AM
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Default Rough idle and rpm

Hey everyone I was wondering if anyone could help. Me with my problem I have a rough idle and the engine bogs when I’m coming to a stop light
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Old 03-25-2019, 08:30 AM
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Clean the iac valve? Do a search on how to. Don't just spray it with cleaner. There is a specific way to remove, disassemble, and clean. Its not difficult at all.
Old 03-25-2019, 03:28 PM
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Had the same issue, car died at a stoplight for some reason.
Did some digging, was told by a customer at Honda to check the IAC.
I didn't get to it because I had audio issues so I disconnected my battery, and after I was done I did the
. Maybe worth a shot before the IAC valve?
Old 04-03-2019, 11:12 PM
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Looks like your IACV needs to be cleaned or you disconnected your battery recently and your ECU doesn't know how to idle
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