So it sounds like I may have a bad ground since the injectors are not
pulsing. When I turn the key on they spray fuel constantly and the fuel
pump never shuts off.
i bought this van in this condition so i'm not sure what the problem
might be.
  Is there suppose to be a strap grounding the engine to the chassis ?
On Friday, July 23, 2004, at 12:53 PM, mark drillock wrote:

> 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
>>>
>>