[DMCForum] Re: Testing Frequency valve

["cruznmd" <racuti1@xxxxxxxxxxxx>]

Ok, dummy probe:

You can get this at any K-mart, Autozone or other parts house. It
looks like a screwdriver with a clear handle with a lightbulb in it.
Only instead of being a flathead or philips it's just a sharp point.
It has a wire coming out of the handle with an alligator clip.

To test the plug, stick the sharp point into it, touching one contact,
and clip something metallic and pointed (paperclip) in the alligator
clip and stick it in the other contact.

If the circuit has power, the light bulb will light. Make sure you
have the RPM relay bypassed and the key in "run" or the circuit will
not have power. It will be a false test.

The RPM relay is usually first to go but if you're hearing clicking I
think that stuff is ok. You'll probably find the plug has no power
because the wire(s) are broken.

I don't know which wire is hot on the cpr plug off hand. Use the dummy
probe to find out.

Rich


--- In DMCForum@xxxxxxxxxxxxxxx, id <ionicdesign@xxxx> wrote:
> What kind of "dummy Probe" should i use on the frequency valve plug?
> 
> Also what should i replace first the Lambda relay or the RPM relay?
> 
> I do hear some kind of clicking noise coming from the Lambda computer
> area behind the drivers seat, is this normal or am i just hearing
> things?
> 
> Is it ok to run the power wires from the CPR just to check the Frequency
> valve, and if it is what colored wire is hot on the CPR and what is hot
> on the Frequency valve?
> 
> I do need to get a Schematic that is readable, my original workshop
> manual wasnt printed well and some of the wire colors is hard to make
> out and all of the lines are not connected so i cant tell what goes to
> what. It would probably make a good paper airplane.
> 
> Mark
> 
> 
> cruznmd wrote:
> 
> >  My book's in the car. I need a pocket bible to carry.
> >
> > Ok, I'll tell you another story (it may not apply to you). I bought a
> > new RPM relay and I still didn't have lambda. Why? One of the
> > contacts in the relay was bent just enough that when the winding
> > energized, only the fuel pump contact closed, not the lambda too.
> >
> > The result? I heard the "click" but had no freq valve.
> >
> > Yes, it gets it's power from the ECU. If you unplugged the ECU, no
> > freq valve.
> >
> > Put a dummy probe on the freq valve plug. Don't -assume- you have
> > power. Assume means "(make an) Ass (out of) u (and) me". $5.00 at the
> > most. :)
> >
> > Rich
> >
> > --- In DMCForum@xxxxxxxxxxxxxxx, id <ionicdesign@xxxx> wrote:
> > > #7 fuse is good and the Lambda seems to be working because i hear a
> > > clicking noise from the compartment area and the fuel pump is
> > working
> > > too.
> > >
> > > I have no power to the Frequency valve, does it get its power
> > directly
> > > from the Lambda or something else (me no good with schematics unless
> >
> > > done in crayon with pretty pictures)?
> > >
> > > Mark
> > >
> > >
> > > cruznmd wrote:
> > >
> > > >  1. You can use a dummy probe (Like a screwdriver with a pigtail
> > and a
> > > >
> > > > lightbulb in the handle. $5.00) Put the icepick on one contact and
> >
> > > > clip a paperclip in the pigtail and stick it in the other one. If
> > it
> > > > lights, there's power.
> > > >
> > > > 2. Use a voltmeter to measure for voltage across the contacts.
> > > >
> > > > 3. The valve works hot or cold. Just at different rates. It should
> >
> > > > ALWAYS buzz when the engine is running, or it's bypassed at the
> > RPM
> > > > relay.
> > > >
> > > > 4. You could apply power to it if you could find a way to hook it
> > up
> > > > to the control pressure regulator power plug. They are not close
> > > > enough so you'd have to remove the freq valve or rig a
> > contraption.
> > > >
> > > > 5. Yes, one is a ground wire. Use the schematic in the Bible.
> > > >
> > > > 6. A nuclear reaction or a bolt of lightning can be used to
> > generate
> > > > 1.21 gigawatts.
> > > >
> > > >
> > > > I recently found my freq valve wires to be hanging on by a
> > thread. I
> > > > brushed the plug and the wires fell right off! I had to rig
> > something
> > > > up with a couple of crimp-on spade connectors.
> > > >
> > > > The other place to look is the lambda relay. If this has failed,
> > the
> > > > ECU will not have power and it will not power the freq valve. I'm
> > > > having a brain cramp right now but I also believe there is a fuse
> > for
> > > > this. #7 I think. Verify the lambda module has power.
> > > >
> > > > Rich
> > > >
> > > > --- In DMCForum@xxxxxxxxxxxxxxx, id <ionicdesign@xxxx> wrote:
> > > > > My frequency valve is not buzzing so i have a few questions.
> > > > >
> > > > > How do i test for power to the valve (colored wires)?
> > > > >
> > > > > Does the car have to be warm or cold to test the valve?
> > > > >
> > > > > Can i apply power to the valve to see if it works?
> > > > >
> > > > > There is two wires attached to the valve, is one a ground wire?
> > > > >
> > > > > How do i generate 1.21 jigawatts?
> > > > >
> > > > > the last question was to see if you actually read my questions
> > and
> > > > not
> > > > > just scanned the email.
> > > > >
> > > > > Mark
> 
> 
> [Non-text portions of this message have been removed]

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