looking for air bypass solenoid

[jamesc at venturalink.net]

I had the same dilemma for my custom fi computer so decided to use the Ford/Mazda
style solenoid instead that uses a PWM signal to determine bypass, rather than fancy
GM stepper motors used by this group.  (Of course the real reason is my car is a
Mustang that already has one)

But I think these are actually easier to implement because you just have to do a
little welding/cutting to fashion a flange for the bypass solenoid to attach to, and
the rest is just normal plumbing.  To implement a GM style sepper bypass that was
used on my Electromotive, you have to do custom machining.

There has to be a dozen ways to generate a variable PWM signal based off a voltage
or whatever, if you don't want your firmware to do it.

Aribert_Neumann at magna.on.ca wrote:

> I am looking for an economically priced air bypass solenoid.  I would consider
> either one that operates with a uniform voltage (on/off) or one that is capable
> of using a variable voltage that would yield proportional air bypass.  Is there
> anything that was used domestically - Ford, GM or Chrysler -  that I could pick
> up from my local auto supply store?  Maybe such a solenoid was used for A/C (on)
> idle control?  My knowledge of available sensors / solenoids is very limited.  I
> am looking to add the equivalent of an electric choke to my Motronic M1.5
> adaption to an Isuzu 2.3L to increase the rpm for the first few minutes of
> operation.
>
> If so, year range, engine family and model of the potential donor vehicle
> please.  Thanks in advance.
>
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