Idle Air Control Valve
#1
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After diagnosing a bad IACV valve on my 1999 Honda Civic LX, I replaced it with a new aftermarket one. Problem is, I am still getting vacuum leaks around the outside of the valve despite torquing properly. I tried another IACV from another part store with the same results. Gaskets are new. Not sure what I am doing wrong. Someone on another forum suggested rtv in addition to the new gasket, but I don't think this is wise. Any help is appreciated. Thanks.
#2
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Idle Air Control Valve
After diagnosing a bad IACV valve on my 1999 Honda Civic LX, I replaced it with a new aftermarket one. Problem is, I am still getting vacuum leaks around the outside of the valve despite torquing properly. I tried another IACV from another part store with the same results. Gaskets are new. Not sure what I am doing wrong. Someone on another forum suggested rtv in addition to the new gasket, but I don't think this is wise. Any help is appreciated. Thanks.
You could use RTV or Hondabond but, shouldn't need to.
#3
Re: Idle Air Control Valve
Are you getting a CEL P0505? I had that code and I replaced my IACV. Got one off the internet for $50 (Honda charges $300+ for the part). Do not use any RTV or Hondabond. It has a rubber gasket, that is all you need. Just make sure surfaces are clean. Long story short, I replaced IACV and the damn P0505 code came back. Thought it may have been the $50 part but it turned out to be the damn PCV valve. It was not set perfectly and had slight vacuum leak. I put a bead of silicone around the base of the PCV where it connects to a black box. That fixed the vacuum leak and the damn P0505 finally went away!