There is SUPPOSED to be +12 to the injectors when the key is turned on.
The relays are not the problem, it sounds like they are working.

The ECU controls the fuel pump relay. The fuel pump relay also provides
+12 to all injectors. The ECU runs the pump for a few seconds every time
the key is turned on and all the time when it thinks that engine is
spinning. The injectors also get +12 at the same times.

The injectors are not fired by turning this +12 on and off. They are
fired by turning the injector grounds on and off. A relay that was stuck
on would not keep the engine from running normally. The relays stay on
continuously whenever the engine is turning anyway.

The ECU controls the turning on and off of the injector grounds. The ECU
pulses the injectors this way. The relays have nothing to do with the
pulsing. The ECU relay is on whenever the key is on. The fuel pump relay
is on whenever the ECU tells it to be on. That is 99.99% of the time
that the key is on.

Mark

Rob Wright wrote:

> There is 12 volts going to all the injectors all as soon as I turn the
> key on. I tried switching the relays since they have the same part
> number on them and it didn't help. What turns the relays on and off?
> Where is the engine grounded to the chassis?
> On Thursday, July 22, 2004, at 10:16 PM, Joel Walker wrote:
>
>>
>>> I am trying to get my 85 westy going but when I turn the key the
>>
>> fuel
>>
>>> starts and never stops. I pulled the injectors out and a couple are
>>> spraying fuel so I thought ok the injectors are bad, but when I
>>> disconnect the electrical plug from them they stop spraying which
>>
>> may
>>
>>> mean there is some sort of electrical problem.
>>>   Any ideas?
>>
>>
>> try fooling around with those two relays in the black box above the
>> ignition coil. the one closest to the hinges of the box is the fuel
>> pump relay ... it powers the pump itself. the other one powers the
>> fuel injectors, and it might be stuck, triggering the injectors to
>> fire continuously.
>>
>> you might also have a bad computer that is triggering the injectors,
>> or just a bad wire from the computer to the injectors.
>>
>> good luck!
>> joel
>>
>