[T3] car died on way home
spinningrooves at gmail.com
Fri Apr 13 20:12:30 PDT 2012
"go to the engine compartment and use a wire to short
between ground and the connectors inside that 2-wire connector in the
engine compartment. No need to unplug those wires or remove the
brain. That should make the pump run. "
Does the key have to be on to make the pump run in this situation ?
On Fri, Apr 13, 2012 at 8:05 PM, Jim Adney <jadney at vwtype3.org> wrote:
> On 13 Apr 2012 at 19:16, Bryon Garvin wrote:
> > Replaced the relay with known good relay. Same problem. 1 click only,
> > from under back seat.
> Try this: Turn the key on, and verify that both coil terminals (in
> the plastic housing) are "hot" (leave the wires plugged into the
> relay.) If they are not hot, the problem is in the power source to
> the relay, starting in the main power relay and then the wire from
> that relay to the fuel pump relay.
> If that's okay, go to the engine compartment and use a wire to short
> between ground and the connectors inside that 2-wire connector in the
> engine compartment. No need to unplug those wires or remove the
> brain. That should make the pump run.
> If it does, remove the brain (again) and, under the same conditions,
> short wire 19 to ground. That should also make the pump run.
> If either test fails, the problem is between that point and the
> If these all work, maybe you can find someone locally who would let
> you use their brain for a test. You could actually use ANY Type 3
> brain, and probably any D-Jetronix brain, but I'm not completely sure
> about that. I don't recommend starting and running your engine like
> this, but you could certainly verify correct pump operation.
> There's still a very small possibility that there's a problem inside
> the wiring harness that responds to the bending that's necessary to
> get the brain in and out. I don't think that's at all likely, but it
> remains a possibility and that could be confusing the diagnosis.
> Finally, I doubt if you damaged anything by poking inside the brain.
> It could be a bad transistor, but it could also be some other
> component in that circuit.
> You DID tighten up the #19 connection to the PC board, didn't you?
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> VWType3.Org mailing list - type3 at vwtype3.org
> Contact gregm at vwtype3.org if you need help with the list.
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