Engine revs up and down on its own

20-CG5-01

KanomNom
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Check anything dealing with the intake, brake booster line, pretty much all the hose connected to the intake manifold.

I remember when I seafoamed my car, I used the vaccine hose and my idle was jumping up and down for a second.
 

Chris Vu

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Iacv. clean it and replace the gasket.
 
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xi0utlawstarix

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Check anything dealing with the intake, brake booster line, pretty much all the hose connected to the intake manifold.

I remember when I seafoamed my car, I used the vaccine hose and my idle was jumping up and down for a second.

I did the coolant bypass a few weeks ago...maybe I should put it back.

Iacv. clean it and replace the gasket.

:haysm9:...I will start with this.
 

jwong512

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Sounds like a vacuum leak. Check all your hoses and make sure they're connected properly.
 

xi0utlawstarix

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Thanks for the input guys...going to undo the coolant bypass and place an order at Majestic Honda (hondaautomotiveparts.com) tomorrow. Gaskets will probably be here by friday from honda warehouse in Windsor CT.
 
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