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full thottle switch

Subject: full thottle switch
From: rocco16v at netzero.net (L F)
Date: Fri Sep 19 16:14:04 2003
References: <IMEIILEDMBCOMEJNDNBICEGEEBAA.txrocco@sbcglobal.net><Pine.A41.4.58.0309191210290.101182@dante53.u.washington.edu>

Nope.
  Substitute 'voltmeter' for ammeter....

Larry
  ----- Original Message ----- 
  From: T. Reed 
  To: ATS - Patrick Bureau 
  Cc: scirocco-l@scirocco.org 
  Sent: Friday, September 19, 2003 12:11 PM
  Subject: RE: full thottle switch


  Uh... that's not good!

  You ought to try to remember that whenever you connect an ammeter to
  something you are shorting it out!

  -Toby

  On Thu, 18 Sep 2003, ATS - Patrick Bureau wrote:

  > my setup is CIS with knock box 2L 8v.
  >
  > I tried to get mA from the testing plug (near brake booster) but I can
  > onlyget mVolts from it.
  >
  >
  > ATS - Patrick Bureau - txrocco@sbcglobal.net
  > ----------------------------------------------
  > MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
  > ICQ:32918816           |AIM:Texasscirocco
  > ----------------------------------------------
  >
  >
  > =>-----Original Message-----
  > =>From: scirocco-l-bounces@scirocco.org
  > =>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Dan Bubb
  > =>Sent: Thursday, September 18, 2003 11:08 AM
  > =>To: Rhett Farnum; t.piwonka@ttu.edu; scirocco-l@scirocco.org
  > =>Subject: Re: full thottle switch
  > =>
  > =>
  > =>Got me!
  > =>They may have a ground or power wire in common, but that's all.
  > =>Maybe somebody rewired your car?
  > =>Using the cold start injector to provide additional fuel has been
  > =>hashed out
  > =>endlessly by everybody thinking they need more fuel, but it's a crummy
  > =>solution because 1) the distribution between cylinders sucks 2)
  > =>there is no
  > =>control over the quantity of fuel injected, it's either off or on.
  > =>Doesn't keep people from trying it.
  > =>If your WOT switch does activate your cold start injector you might think
  > =>about rewiring back to the original schematic cause it would certainly be
  > =>injecting more fuel than your engine needs.
  > =>Dan
  > =>
  > =>
  > =>> If it doesn't use the cold start injector why is my switch
  > =>wired to it???
  > =>>
  > =>>
  > =>>
  > =>> Peace Out,
  > =>> Rhett
  > =>> Rocco_crossing
  > =>> '83 Rocco (autocross ready, tune up, install harness, and finally I may
  > =>get
  > =>> to makeing it look better!!)
  > =>>
  > =>>
  > =>>
  > =>>
  > =>>
  > =>> >From: "Dan Bubb" <jdbubb@ix.netcom.com>
  > =>> >To: "Rhett Farnum" <rocco_crossing@hotmail.com>, <t.piwonka@ttu.edu>,
  > =>> >  <scirocco-l@scirocco.org>
  > =>> >Subject: Re: full thottle switch
  > =>> >Date: Thu, 18 Sep 2003 08:01:34 -0400
  > =>> >
  > =>> >It does not use the cold start injector!
  > =>> >The cold start injector is used only when the engine is
  > =>cranking (and not
  > =>> >always then) and no other time.
  > =>> >
  > =>> >The full throttle switch increases DPR current on CIS-E (16V), which
  > =>> >increases fuel flow through the normal injectors.
  > =>> >On CIS-lambda (8V) it increases the duty cycle of the frequency valve
  > =>again
  > =>> >increasing fuel flow through the normal injectors.
  > =>> >
  > =>> >On CIS-lambda closing the switch almost always increases
  > =>engine speed and
  > =>> >smoothes out the idle (especially if you have a big cam) because the
  > =>engine
  > =>> >goes open loop (stops looking at O2 sensor output) and richens the
  > =>mixture
  > =>> >and most engines like to idle richer than stochiometric.
  > =>> >NOTE: I guess this assumes your car is correctly tuned and FV
  > =>duty cycle
  > =>> >oscillates around 50% at idle.
  > =>> >
  > =>> >On CIS-E closing the switch again causes the engine to go open
  > =>loop. DPR
  > =>> >current is supposed to go to 16mA if engine speed is over 2500
  > =>RPM. On my
  > =>> >car DPR current goes to a steady 8mA with the car idling. I'm not
  > =>> >absolutely
  > =>> >sure how the engine will respond by closing the switch at idle. I would
  > =>> >assume if the mixture is set at 10mA (Bentley recommended setting) then
  > =>if
  > =>> >it goes to 8mA by pressing the switch the engine will lean out a little
  > =>and
  > =>> >drop a few RPM. In any event I don't think it will make a huge
  > =>difference
  > =>> >as
  > =>> >long as your mixture is tuned correctly.
  > =>> >Dan
  > =>> >
  > =>> >
  > =>> > > It uses the cold start injector. If you ahve voltage that means you
  > =>> >injector
  > =>> > > is either shot or clogged. Try fom fuel inj. cleaner and if that
  > =>doesn't
  > =>> > > work replace. ~$5 at a bone yrd.
  > =>> > >
  > =>> > >
  > =>> > >
  > =>> > > Peace Out,
  > =>> > > Rhett
  > =>> > > Rocco_crossing
  > =>> > > '83 Rocco (autocross ready, tune up, install harness, and finally I
  > =>may
  > =>> >get
  > =>> > > to makeing it look better!!)
  > =>> > >
  > =>> > >
  > =>> > >
  > =>> > >
  > =>> > >
  > =>> > > >From: "Robert Piwonka" <t.piwonka@ttu.edu>
  > =>> > > >To: "scirocco" <scirocco-l@scirocco.org>
  > =>> > > >Subject: full thottle switch
  > =>> > > >Date: Thu, 18 Sep 2003 00:48:07 -0500
  > =>> > > >
  > =>> > > >When I press the full throttle switch at idle should the car bog
  > =>down?
  > =>> > > >Cause it doesn't.  However I tested the voltage on the output and I
  > =>> >gets
  > =>> > > >12v
  > =>> > > >when activated and not 12v when not, so it appears to be working.
  > =>> > > >
  > =>> > > >Also how does the full throttle switch richen the mixture?  Does it
  > =>> >change
  > =>> > > >the dpr current or use the cold start injector or what?
  > =>> > > >
  > =>> > > >Thanks
  > =>> > > >Robert Piwonka
  > =>> > > >
  > =>> > > >
  > =>> > > >_______________________________________________
  > =>> > > >Scirocco-l mailing list
  > =>> > > >Scirocco-l@scirocco.org
  > =>> > > >http://neubayern.net/mailman/listinfo/scirocco-l
  > =>> > >
  > =>> > > _________________________________________________________________
  > =>> > > Get 10MB of e-mail storage! Sign up for Hotmail Extra Storage.
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  > =>> > >
  > =>> > >
  > =>> > > _______________________________________________
  > =>> > > Scirocco-l mailing list
  > =>> > > Scirocco-l@scirocco.org
  > =>> > > http://neubayern.net/mailman/listinfo/scirocco-l
  > =>> >
  > =>> >
  > =>>
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  > =>
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Follow-Ups:
- full thottle switch
  - From: treed2 at u.washington.edu (T. Reed)

References:
- full thottle switch
  - From: txrocco at sbcglobal.net (ATS - Patrick Bureau)
- full thottle switch
  - From: treed2 at u.washington.edu (T. Reed)

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