Re: 2003 Accord Throttle Surging Problem/P0505

On Apr 5, 5:58 pm, 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.

Actually, the MAP sensor controls idle after warm up.