[Gmecm] Reluctor / rotor phasing

[DV Fagan]

Tracy,
Try backing it off to 4 degrees.  What is the IAC
doing? Have you set the idle stop on the TBI to 750
rpm?
Dennis

--- Tracy and June Hooker <thooker at nmsu.edu> wrote:

> With EST off it is at 9 degrees, but wont idle more
> than about 3 seconds,
> then it slows down to the  point where the engine
> dies.
> 
> Tracy 
> 
> -----Original Message-----
> From: gmecm-bounces at diy-efi.org
> [mailto:gmecm-bounces at diy-efi.org] On Behalf
> Of DV Fagan
> Sent: Monday, September 12, 2005 12:39 PM
> To: gmecm at diy-efi.org
> Subject: Re: [Gmecm] Reluctor / rotor phasing
> 
> Tracy,
> What does a timing light indicate your idle timing
> is?
> With EST on and off?
> It should be zero degrees with EST off.  Cam chain
> wear might require you to set it at 4 degrees BTC.
> It
> should then idle with EST off.
> 
> --- hooker <thooker at nmsu.edu> wrote:
> 
> > Greetings,
> > 
> > Thanks for letting me join.  I hope to contribute
> to
> > the list in a positive
> > way. 
> > 
> > I have a Ford I6 that I installed a GM TBI system
> > on.  It is at about the
> > 95% level now, but I am trying to track down a few
> > problems.  Below are two
> > most pressing questions:
> > 
> > One question I have is the relationship between
> the
> > reluctor wheel and the
> > rotor.  In my particular system, when the reluctor
> > is pointing directly at
> > the pickup coil, the rotor has passed the actual
> #1
> > distributor cap point by
> > 10 or 15 degrees.  The rotor plate was fixed by
> tack
> > welding it while it was
> > in the non advanced position (it was a vacuum
> > advance type dist, and when I
> > removed the vacuum pot I pushed the plate away
> from
> > the vacuum motor, then
> > tack welded it place).
> > 
> > I could change this by simply grinding the tack
> > welds and repositioning it.
> > Where should I position it?
> > 
> > Question #2:  In my setup, there are two wires
> > coming from the Ford dist:
> > Purple and Orange.  I put an O scope on the wires,
> > and when the reluctor
> > tooth is approaching the coil center, the purple
> > wire is the positive one.
> > Therefore, I connected the purple wire to the P
> > input of the GM ignition
> > module, and the orange wire to the N input.  
> > 
> > The motor runs pretty well, but when I remove EST
> > connector to time the
> > engine, it wont stay running.  I set the timing to
> 0
> > degrees (having my wife
> > keep the engine running with the gas pedal), then
> > reconnect the EST, and the
> > engine perks right up, idles, etc.
> > 
> > Is this normal?
> > 
> > Thanks for your help,
> > Tracy
> > 
> >  
> > 
> > _______________________________________________
> > Gmecm mailing list
> > Gmecm at diy-efi.org
> > http://lists.diy-efi.org/mailman/listinfo/gmecm
> > 
> 
> 
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