2000 Honda Odyssey...when in park, idle surges rhythmically. Had them change power steering switch and wire harness...problem is still there. This started after shop replaced air filer, and flushed power steering fluid and replaced a tie rod. Everyone is stumped.
Have them check the IAC - there is a troubleshooting procedure in the Helms manual to verify its the IAC and not a clogged air intake component
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