[DMCForum] Re: very frustrated!! - starting problem
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[DMCForum] Re: very frustrated!! - starting problem


It's a mystery for sure. I mean is it really likely that the fuel
pump AND the relay are faulty?

You do realize that you will only have voltage for 1 second when the
RPM relay is in place and you turn the key on right? The engine has
to be turning for the relay to engage constantly. The RPM relay has a
timer chip and an input from the ignition coil sensing engine
rotation. It's a safety device. The fuel pump isn't meant to run when
the key is on, but the engine isn't running.

Hm...I agree with your choice of action. If you have voltage at the
fuel pump, ON THE FUEL PUMP +/- TERMINALS, and you have no sound, or
vibration, swap your old pump back in.

It would be a shame if your new pump died already. It has happened
before though so I wouldn't be totally shocked.

Rich A.

--- In DMCForum@xxxxxxxxxxxxxxx, "Brian" <TK581@xxxx> wrote:
> Okay - I didn't bother test starting it because with the jumper (a
> godd one) in place and a full battery I'm getting 9.5volts at the
> pump.  I do not hear the pump either (with ignition turned or
> I might replace the new pump with my old one to check to see if I
> get a different result (I don't think my old pump was ever broken,
> just replaced it as a revamp)  - should I even bother with that? 
> I'm pretty sure that the relay is bad becasue I get no voltage when
> it is place and at least I get 9.5 when I have the jumper in place.
> I hope to have some more info by tomorrow evening...  :)
> >
> > It's not a dumb question. Remove the air cleaner and press down
> the
> > air flow sensor, spray in a little starter fluid. DONT go nuts
> with
> > it. You could flood the engine or worse, have a wicked back-fire.
> >
> > Just a "one thousand and one" squirt. Start the car immediately
> > before it all evaporates.
> >
> > Tell me again: Did you hear or feel fuel pump activity with the
> good
> > jumper in between 30 and 87?? Did you measure 12 volts at the
> > pump wires when the jumper was in place??
> >
> > Don't bother starting the car with the relay in place. We already
> > know it doesn't work.
> >
> > If you have 12 volts on the fuel pump with the jumper and you
> it
> > buzz, with the jumper, it's worth a test start.
> >
> > Rich A.
> > #5335
> >

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