'165 manual trans idle behavior.

Programmer nwester at eidnet.org
Wed Jun 20 00:11:00 GMT 2001


Sorry about the idle "byte" thing--after you do a lot of other
bins, you keep thinking you see the same code in all of 'em
Didn't find a specific idle zone vs. the VSS as yet. Still
looking...

Lyndon
----- Original Message -----
From: Kevin Crain <warpten at warpten.com>
To: <gmecm at diy-efi.org>
Sent: Tuesday, June 19, 2001 9:52 AM
Subject: Re: '165 manual trans idle behavior.


> I was wondering the same thing on #2 below.  Never had stalling issues but
> I've spent lots of time with the automatic trans tuning open loop AFR vs.
> coolant temp and the MAF tables.
>
> -Kevin
>
> On Tue, 19 Jun 2001, romans, mark wrote:
>
> > Two issues.
> >
> > 1) Stalling, the setting that is there helps prevent stalling.
> > (I fought a stalling issue since I built my engine, it is now pretty
much
> > resolved).
> > 2) Where is the idle byte?  I have looked at the listing and don't
> > remember seeing it.  I suspect it's not in the lookup tables?
> >
> > Mark
> >
> > ----- Original Message -----
> > From: "Programmer" <nwester at eidnet.org>
> > To: <gmecm at diy-efi.org>
> > Sent: Monday, June 18, 2001 10:24 PM
> > Subject: Re: '165 manual trans idle behavior.
> >
> >
> > > Maybe one could change the "idle" byte to "5 mph" instead of  0 ??
> > >
> > > Lyndon.
> > > ----- Original Message -----
> > > From: Kevin Crain <warpten at warpten.com>
> > > To: <gmecm at diy-efi.org>
> > > Sent: Monday, June 18, 2001 12:03 PM
> > > Subject: Re: '165 manual trans idle behavior.
> > >
> > >
> > > > I'm noticing with my APYP code and 750 idle at coolant temp above
> > 100degF
> > > > that it holds at ~1250rpm when coming to a halt, then goes to 750rpm
> > after
> > > > a few sec of 0mph VSS input.  Kinda annoying, I'd like to see it go
> > > > straight to 750 immediately on halt, but just a slight nuisance.
> > > >
> > > > -Kevin
> > > >
> > > > On Sun, 17 Jun 2001, Programmer wrote:
> > > >
> > > > > Yeah--read back through the schematics...no clutch switch
> > input--sorry.
> > > > > There is--however--an idle learn strategy. Like Mark mentioned, I
> > think
> > > > > part of the strategy is "0" VSS for idle. If there's any EMI down
the
> > > line
> > > > > that feeds the computer a synthetic vss signal, it won't idle low.
> > > > >
> > > > > Lyndon
> > > > >
> > > > > ----- Original Message -----
> > > > > From: Kevin Crain <kevin at warpten.com>
> > > > > To: <gmecm at diy-efi.org>
> > > > > Sent: Saturday, June 16, 2001 7:08 PM
> > > > > Subject: '165 manual trans idle behavior.
> > > > >
> > > > >
> > > > > > The symptoms you describe are exactly what I see with the ARAP
code,
> > > even
> > > > > > with the manual trans bit set to 1.  Haven't had time to get an
ALDL
> > > scan
> > > > > > with the APYP ('89 Vette, 6-speed manual) code but the idle
seemed
> > to
> > > > > > follow the pedal more closely when coming to a stop.  I'll
report
> > back
> > > on
> > > > > > Monday...got a race to attend at Pocono on Sun.
> > > > > >
> > > > > > The '88 Firebird Helms manual shows no clutch switch input to
the
> > ECM,
> > > > > > period.  It has an input from the gear selector that closes to
> > ground
> > > > > > whenever the shifter is in either P or N.  Given that this wire
is
> > now
> > > > > open
> > > > > > (heat shrink over the end, bundled neatly aside) my ECM never
sees
> > me
> > > in P
> > > > > > or N, and ALDL data confirms this.
> > > > > >
> > > > > > The only wiring to the clutch switch is the starter interlock,
and
> > > it's
> > > > > > just the clutch "pedal in" switch in series with the starter
> > solenoid
> > > > > > circuit.  Until that switch closes, you have no voltage to the
> > starter
> > > sol
> > > > > > with the key in <START> position.
> > > > > >
> > > > > > -Kevin
> > > > > >
> > > > > > At 05:14 PM 6/16/01 -0700, you wrote:
> > > > > > >So, what pin was it?  What code are you running?
> > > > > > >I have a friend who runs 89 auto code in his 88 Firebird
> > > > > > >that he put a 6 speed in.  350 tpi. His idle hangs until
> > > > > > >he comes to a stop and waits.
> > > > > > >Any ideas?
> > > > > > >Thanks.
> > > > > > >Mark
> > > > > > >----- Original Message -----
> > > > > > >From: "Kevin Crain" <kevin at warpten.com>
> > > > > > >To: <gmecm at diy-efi.org>
> > > > > > >Sent: Saturday, June 16, 2001 9:24 AM
> > > > > > >Subject: Re: Fwd: Back from brazil and pistons
> > > > > > >
> > > > > > >
> > > > > > >> At 08:50 AM 6/16/01 -0600, you wrote:
> > > > > > >> >Are you giving the PCM a clutch switch signal ?
> > > > > > >> >It may stall on you with the vette 6 speed bin...
> > > > > > >> >
> > > > > > >>
> > > > > > >> Hmmm.  No, I'm not sending a clutch switch signal.  There are
two
> > > > > switches
> > > > > > >> on the '95 Firebird pedal set...one that closes when the
clutch
> > > pedal
> > > > > is
> > > > > > >> out and another that closes when the pedal's in.  Guess it's
time
> > > to
> > > > > haul
> > > > > > >> out the Helms and see which pin(s) the '165 ECM wants to see
> > which
> > > > > signal
> > > > > > >on.
> > > > > > >>
> > > > > > >> No stalling issue, no SES light, and the idle returns to 750
much
> > > more
> > > > > > >> quickly now when stopping.
> > > > > > >>
> > > > > > >> -Kevin
> > > > > > >>
> > > > > > >> -Kevin
> > > > > >
> > > > >
> > >
> >
>> -------------------------------------------------------------------------
> > > > > -
> > > > > > >--
> > > > > > >> To unsubscribe from gmecm, send "unsubscribe gmecm" (without
the
> > > > > quotes)
> > > > > > >> in the body of a message (not the subject) to
> > > > > majordomo at lists.diy-efi.org
> > > > > > >>
> > > > > > >>
> > > > > > >
> > > > > >
> > > > >
> > >
> >
>---------------------------------------------------------------------------
> > > > > -
> > > > > > >To unsubscribe from gmecm, send "unsubscribe gmecm" (without
the
> > > quotes)
> > > > > > >in the body of a message (not the subject) to
> > > majordomo at lists.diy-efi.org
> > > > > > >
> > > > > > >
> > > > >
> > >
> >
> --------------------------------------------------------------------------
> > > > > --
> > > > > > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the
> > > quotes)
> > > > > > in the body of a message (not the subject) to
> > > majordomo at lists.diy-efi.org
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> --------------------------------------------------------------------------
> > > --
> > > > > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the
> > quotes)
> > > > > in the body of a message (not the subject) to
> > > majordomo at lists.diy-efi.org
> > > > >
> > > >
> > >
> >
> --------------------------------------------------------------------------
> > > --
> > > > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the
quotes)
> > > > in the body of a message (not the subject) to
> > majordomo at lists.diy-efi.org
> > > >
> > > >
> > >
> >
> --------------------------------------------------------------------------
> > --
> > > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the
quotes)
> > > in the body of a message (not the subject) to
majordomo at lists.diy-efi.org
> > >
> > >
> >
>
> --------------------------------------------------------------------------
--
> > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> > in the body of a message (not the subject) to
majordomo at lists.diy-efi.org
> >
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org




More information about the Gmecm mailing list