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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 12-16-2003, 10:54 AM   #1 (permalink)
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enildeR is an unknown quantity at this point
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Someone know if this is a solenoid or a stepper control valve?

It is supposed to be off a E28 E30 E24 E23 E12 or E2.

Sorry to intrude on your board, but I don't even own a BMW. I own a '92 Mazda Protege.

I'm thinking of going a custom route for controlling idle when I put in my DOHC and wire up my standalone. I don't like the design of the current module that controls my car's idle.

I've been itching to do this for over a year now, and now I finally have the money to do it.

If this is a stepper motor, I'll have to find something else, as the EMS I have only works with a solenoid or by using pulse width modulation.
Someone know of a solenoid that would work better for my little DIY project?

I like the idea of sticking a control valve between the line coming off the Hemholtz box and then line going to the TB. I'll prolly land up hollowing out the control module that sits under the TB. Although, I had torn one apart with my dremel some time ago just to see the inside and see how it was controlling the airflow. It may turn out harder to hollow it out. In that case, I'll just do a bit of welding (that is if the control module is made of aluminum that can be welded, otherwise I'll have to have a piece fabbed).

Thanx a bunch in advance!


-Bryan
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Old 12-16-2003, 02:05 PM   #2 (permalink)
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KC Ron Carter is an unknown quantity at this point
It is a stepper motor and here is a block diagram of the issue.

http://members.roadfly.com/kcroncarter/etm117.htm


http://members.roadfly.com/kcroncarter/etm121.htm


Later,
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Old 12-16-2003, 03:08 PM   #3 (permalink)
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enildeR is an unknown quantity at this point
Damn.

I'll have to find another solution then.

Thanks for the info, KC. I'll definitely keep that image if I happen to buy the ver "4Plus" of my EMS.

By any chance, would you know how much this part goes for normally?

Thanks again.
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