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.
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