Re: 5k freq valve

[Aleksander Mierzwa <alex@matrix.pl>]

At 18:54 25.08.98 -0400, Arryn Milne wrote:

>On an '86 5kcsTQ, having what seems like a vacuum leak, but isn't.
>Eliminated that by plugging every vacuum line I can find.  Using a
>stethescope I used to hear humming from the Freq valve (few months ago),
>but it is silent now.  Putting the steth on top of the black plastic boot
>(from the fuel dist), I hear a humming sound (like I used to hear from the
>Freq valve), but can't hear it on anything metal.

It is not necessary to use a stethoscope to hear the frequency valve
operating, it buzzes loudly like a bee. You can ativate it without starting
the engine by running ouput tests on the ECU: switch the the ignition on,
insert the a fuse into the fuel pump relay for 4 seconds then remove: fuel
pump will start running. Insert and then remove the fuse again: you should
hear the frequency valve buzzing.

Aleksander Mierzwa
Warsaw, Poland
mailto:alex@matrix.com.pl
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)