On Apr 6, 2:37 pm, penthor_...@[EMAIL PROTECTED]
wrote:
> On Apr 5, 11:03 pm, jim beam <spamvor...@[EMAIL PROTECTED]
> wrote:
>
>
>
> > penthor_...@[EMAIL PROTECTED]
wrote:
> > > On Apr 5, 3:20 pm, "Elmo P. Shagnasty" <el...@[EMAIL PROTECTED]
>
wrote:
> > >> In article
> > >> <55e2e307-92a9-4d42-9c47-3951efc2a...@[EMAIL PROTECTED]
>,
>
> > >> penthor_...@[EMAIL PROTECTED]
wrote:
> > >>> My 2003 Accord is experiencing a throttle surge problem similar to
> > >>> what I have read about in this ng. 6 cyl. No other apparent
> > >>> problems. 120K on plugs. 27mpg.
> > >>> It warms up OK. Then it begins surging between 1000rpms to
2000rpms.
> > >>> Up and down continuously surging. It happens when it's sitting
still
> > >>> or when being driven. Cruise on or off doesn't make a difference.
> > >>> Using an Actron code reader I get a "pending" P0505 (Idle Control
> > >>> System Malfunction) which seems reasonable. I don't know where to
> > >>> start to address this problem. Any advice would be greatly
> > >>> appreciated.
> > >>> Penthor
> > >> Idle air control valve?
>
> > > That's where I am now. I read on another site that the IAC valve
> > > controls the idle before the engine warms up, and the MAP sensor
> > > controls the idle before the engine warms up. I tried to remove the
> > > IAC valve to clean it as I read elsewhere. The 2 screws are very
soft
> > > metal and I'm afraid of stripping them out. So I'm planning on
> > > removing the throttle body to better access them.
>
> > the iacv is a honking great water heated valve mechanism built into
the
> > air intake, not the throttle body. and it's held on with bolts, not
> > soft metal screws.
>
> JB, Thanks for the info on sensor function. May be that the other
> source is incorrect. However, the IAC valve on my 2003 6cyl Accord is
> attached to the bottom of the throttle body by screws, which are
> easily stripped. I can personally vouch for that info. You are
> correct about the water heated characteristic. That is one of the
> checks when idle problems arise; is the coolant level OK. Thanks for
> replying.
Problem solved. I cleaned the TB and IACV and reassembled, and it ran
fine, better than ever. While I had it off I tested the IACV with 12v
and it worked fine. On the road again:)
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