Re: [DMCForum] Attn: Bill Robertson!!!!!/Dead freq valve

["id" <ionicdesign@xxxxxxxxxx>]

I had this problem and it was my Lambda relay. check your relay with
another and see if the problem persists.

Mark

cruznmd wrote:

> Bill,
>
> I hope you're not leaving until Wednesday. I desperately need that
> Lambda module for testing.
>
> I know the ECU's never die but this may be that rare case. I noticed
> my idle drop to the point where the car barely runs, when I step on
> the pedal it takes a long while for the engine to rev. Big smell of
> fuel. Engine is flooding.
>
> I checked the freq valve and it's no longer buzzing. The circuit is
> dead. When the engine is running, no power on the freq valve
> connection. When I jumper 30 & 87B, the valve should buzz, no power.
> (that's 87B, not 87 for the fuel pump. I've done this before)
>
> As people have pointed out, it's a switched ground. The hot lead has
> power but the ground is not switching. I can manually ground the freq
> valve and hear it switch once.
>
> So, it's like the lambda module is not switching the freq valve ground
> to make it buzz. I've checked the RPM relay. I removed the cover and
> watched the contacts close. I jumpered 30 & 87B and that didn't power
> the valve either.
>
> Either the ground wire is broken somewhere or the module is bad. Any
> other suggestions are welcome.
>
> Rich
>
>
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