Date:         Sat, 28 May 2011 21:08:38 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Anything like this for 1.9L?
Comments: To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
In-Reply-To:  <1306621996.19748.90.camel@TheJackUbuntuNetbook>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 06:33 PM 5/28/2011, Rocket J Squirrel wrote:
>And there are so many unanswered questions. For example -- the little
>electronic idle stabilizer box on the left side of the engine. I know
>what it does for a living, but I have no idea how it does it . . . I
>mean, what is it using for a "clock" to compare the engine rpms to to
>determine if the engine is slowing down? Three wires in, three wires
>out. Bypassable. David Beierl -- you're our only hope!

It just sits in line between the distributor and the ECU.  Whenever
the timing pulse drops below the frequency corresponding to the
correct idle speed it starts sending the output to the ECU earlier
than it's actually hearing from the distributor, thus in effect
advancing the timing.  The slower the frequency the more the advance
up to some limit.

Yrs,
d