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Re: frequency valve - what does it do? (archive)
[ Follow Ups ] [ 3-series (E21) Message Board ] [ Msg. Board FAQ ]
Posted by Mike W. on June 10, 2001 at 02:41:42:

In Reply to: frequency valve - what does it do? posted by Peter S on June 10, 2001 at 01:02:12:

The oxygen sensor (along with a couple of other things) provide input to the control unit (computer) which in turn runs the frequency valve to control the control pressure to the fuel distributor (not the injector opperating pressure) this in turn regulates the overall mixture lean/rich.

Mike W.

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