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I have a 2000 Honda Civic hx automatic (cvt tranny) I have a surging idle after replacing the idle air control valve, cleaning throttle body, replacing spark plugs and wires.

Joined: Aug 2004

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From: cleveland, oh, usa

Joined: Dec 2003

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Coolant level full?

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Joined: Jan 2019

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So far no cel
already replaced idle air control valve
i thought about cleaning the old iacv and putting it on and seeing how it will be

Joined: Jan 2019

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[QUOTE=muellersfan;51823176]Is CEL code P0505 thrown?

Check whether one or more vacuum hoses on the IM are disconnected.

Did you replace the TB gasket and torque the nuts and bolts to spec?


I put the same throttle body gasket back on and torque it to spec
vacuum hoses on the “Im”?? What’s the IM again?

Joined: Jan 2019

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It sounds like it has an oversized cam in it 🤦🏻*♂️

Joined: Jan 2019

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It sounds like it has an oversized cam in it?

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I’ll check coolant level I read possible air in it from replacing the valve

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From: Still hunting that foo up there

Joined: Jan 2019

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PROBLEM SOLVEDDDDDD!!

SOLUTION ::

Morning Sex = Good Luck!

i cleaned the old iacv and swapped them back out and so far the idle sounds perfect! I guess I got a bad iacv !

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From: La Puente California

genuinly curious what if it’s not full. Why how would that have an affect. I’m in that guys same boat rn

Joined: Dec 2003

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Air trapped in the system can cause the idle to bounce. I believe it’s related to the iacv not registering coolant temp

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From: Beavercreek, OH