full thottle switch - how ammeters work

[jdbubb at ix.netcom.com (Dan Bubb)]

Patrick:
I wasn't mad at you. It's just that sometimes these posts get so far from
the original issue that you have to yell to get your point through!
So, I was kind of yelling to make it through all the informative posts that
had nothing to do with your situation.

Yes, you measure mA to set the fuel mixture. But, ONLY on CIS-E! i.e. 16V
Sciroccos. CIS-E is completely different, in an electrical sense, from
CIS-lambda.
CIS-E you measure mA. (16V Sciroccos)
CIS-lambda you measure dwell. (8V Sciroccos with O2 sensor)
CIS-E controls fuel pressure in the lower chambers using a differential
pressure regulator that receives a continous current to control a valve.
Adjusting current through the valve determines fuel flow through the valve
and the pressure in the lower chamber.
CIS-lambda controls fuel pressure in the lower chambers using a frequency
valve. The frequency valve receives a pulsed current (pulsed from full on to
full off probably around 30-60 hz) and the % time that the current is on
determines flow through the valve and therefore pressure in the lower
chamber.
Probably more info than you wanted, but save the mA stuff for the 16V
Sciroccos.
Dan

----- Original Message -----
From: "ATS - Patrick Bureau" <txrocco@sbcglobal.net>
To: "_Scirocco Mailing List" <scirocco-l@scirocco.org>
Sent: Tuesday, September 23, 2003 1:16 PM
Subject: RE: full thottle switch - how ammeters work


> I am sorry if my email offended, it was not ment that way.
>
> well I have ordered a new multimeter that will do Dwell, so that will
solve
> the problem, but now I am confused, if dwell is not mA nor mV , then why
> everyone talks about a mA reading on the test lead or am I so dense that I
> am mixing up things together and doing a process of self confusion and in
> annoyance by everyone with my dumb ass questions..
>
>
> ATS - Patrick Bureau - txrocco@sbcglobal.net
> ----------------------------------------------
> MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
> ICQ:32918816           |AIM:Texasscirocco
> ----------------------------------------------
>
>
> =>-----Original Message-----
> =>From: Dan Bubb [mailto:jdbubb@ix.netcom.com]
> =>Sent: Tuesday, September 23, 2003 9:08 AM
> =>To: ATS - Patrick Bureau; T. Reed
> =>Cc: Allyn; scirocco-l@scirocco.org; L F
> =>Subject: Re: full thottle switch - how ammeters work
> =>
> =>
> =>Dwell is NEITHER mA or mV.
> =>I'm not a hotshit electrical engineer and don't know anything
> =>about ammeters
> =>and voltmeters, but I do know that you need to measure dwell on
> =>your car and
> =>you need a dwell meter to do it!
> =>Get a dwell meter. Something that has a scale on it that says "dwell"!
> =>Then we can quibble about what the setting should be and how much
> =>it doesn't
> =>effect the power your engine makes!
> =>Dan
> =>
> =>
> =>----- Original Message -----
> =>
>
>
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