How about you take that advertisement crap out of the bottom of your
post?

And it sounds to be your IACV (Idle Air Control Valve) located on the
back of throttle body, extending onto the intake manifold. When those
go bad, the idle tends to surge like you're speaking of. If that's not
it, try bleeding the coolant.

This has happened to me quite a few times, and everytime it has been
either the IACV, or coolant needed bleeding.

Good luck with it.

-Wes


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ZedEx
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