Re: Stubborn Vehicle

["David Teitelbaum" <jtrealty@xxxx>]

After posting I thought to do more research. According to several
wiring diaghrams I have you are right to believe that the red/purple
is a ground. I still am not sure how this actually works because I
know for a fact there is a wire right by the frequency valve that when
left ungrounded the frequency valve won't work. At this point I think
the best thing is to make sure that there is nothing in the hot start
relay plug and just put a test light across the two wires in the plug
going to the frequency valve. It should light. If it doesn't then you
have to determine what is missing, the power or the ground. It could
be the frequency valve is bad, only opening when it has a full 12
volts and not able to buzz anymore with less than a 100% duty cycle.
Before replacing I would rule out any problem with the wiring harness.
You could also try smacking it lightly, sometimes it could dislodge a
piece of dirt holding it stuck. You could also measure the resistance
on it, it is just a coil. (Just ignore the previous post).
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote:
> I think you are a little confused, The red/purple wire from the ECU is
> a feed (not a ground). If you are measuring a voltage there then you
> can assume the ECU is providing power to the frequency valve. If the
> valve won't buzz it is either defective (possibly stuck) or the ground
> wire is unattached or broken. Pull the plug on the frequency valve and