Idle too high. How do I adjust

[Scott Pearson]

I've got a 749 that was powered up after sitting in Mississippi River muck
for a week, doesn't look like it did it any good, lots of green, a few parts
look like the smoke might have got out. Iowa floods and ECM's dont seem to
like each other.

Scott

----- Original Message -----
From: "Bruce" <nacelp at bright.net>
To: <gmecm at diy-efi.org>
Sent: Monday, September 04, 2000 5:06 PM
Subject: Re: Idle too high. How do I adjust


>
> Salt water, yes, is a problem.
> But, I had an ecm once that was several pounds over weight.
> It was packed tight with mud.  Took the case apart, washed the mud out,
gave
> it a shot of electrical cleaner, and was good as new
> Bruce
>
>
>
>
>
> ----- Original Message -----
> From: "Scott Pearson" <mrcad472 at bigplanet.com>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, September 04, 2001 5:53 PM
> Subject: Re: Idle too high. How do I adjust
>
>
> > How are you keeping a 747 away from the elements in a boat? Especially
if
> > you operate it in salt water, that stuff is nasty to any metal,
especially
> > electronics. Would hate to be several miles from land and short out the
> ECM.
> > .
> >
> > Scott
> >
> > ----- Original Message -----
> > From: "Bruce" <nacelp at bright.net>
> > To: <gmecm at diy-efi.org>
> > Sent: Monday, September 04, 2000 2:44 PM
> > Subject: Re: Idle too high. How do I adjust
> >
> >
> > >
> > > Dunno anyone that does boat chips off hand.
> > > The proper answer is burning your own chips anyway.
> > >
> > > Might try just leaving the IAC unplugged.
> > > Jump A-B at the ALDL, key on for 30 secs., unplug IAC, and then key
off,
> > > start engine, set min idle speed adj..  Would defeat the IAC, not the
> best
> > > answer but an answer
> > > Bruce
> > >
> > >
> > > ----- Original Message -----
> > > From: "ZZZ Temp-Gold" <Temp-Gold at HighlandsIns.com>
> > > To: <gmecm at diy-efi.org>
> > > Sent: Tuesday, September 04, 2001 3:21 PM
> > > Subject: Idle too high. How do I adjust
> > >
> > >
> > > > I have repowered my boat with a '90 rv tbi 7.4. It has a 747 ecu and
> > works
> > > > nicely, other than the idle. The boat likes a 500+/- rpm idle and
it's
> > > > currently idling at 800. What can be done to adjust it? (Ive tried
> > backing
> > > > off the butterfly, and this seems to help, until I restart the motor
> and
> > > it
> > > > goes back up to 800 again.) If reprogramming is the only solution,
Id
> > sure
> > > > buy an 'adjusted' chip.
> > > >
> > > > Also, it pulls up to 4200 rpm. Is this the upper limit of the motor?
> It
> > > > seems reasonable, just curious.
> > > >
> > > > Thanks,
> > > >
> > > > Greg Gold
> > >
> >
>
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