------------------------
Hi =
Mark,
When you
turn the key from off to on your digijet ecu (computer) turns the fuel =
pump on
for a couple of seconds. Then it waits for pulse signals from the =
distributor
and will keep the fuel pump running as long as the pulses are
present.
You say you do =
not hear the
fuel pump come on sometimes. Check the grounds on your ecu make sure it =
is
mounted in the bracket and the bracket is mounted to the van =
properly. There are also some ground wires and a ground strap to the =
front and
just below the coil be sure these are ok and the strap has a good solid
connection to the left head.
If these are ok =
start
isolating the problem with a meter. You should see about 12 - 13 =
volts
applied to the fuel pump when you switch from key off to key =
on.
This 12 volt signal comes from a fuel pump relay that lives just =
above the
coil. Both relays in the plastic box should energize with key on and the =
fuel
pump relay will drop in a couple of seconds if no distributor =
pulses. 12
volts is applied directly to these 2 relays with no fuses so take care =
not to
short anything while testing. The other relay in the box supplies =
power to
the ecu among other things. Please update us of any change in status and =
best of
luck with your quest.
Darrell
Can anyone help me?!?!
I have and 83' =
Volkswagen Vanagon. My problem is that it will die at random while =
driving
down the road. When it does, it won't start for several minutes. =
Sometimes
it won't start when it has been parked for a while either. I'll walk =
you
through the behavior: It has a fuel injection system. When you turn =
the key,
you generally hear a noise twice of the fuel injection turning on. =
This is a
good sign because the van will start and run after this. Sometimes =
you will
only hear the noise once, or maybe not at all, in this case you are =
not
going anywhere. I have often had to wait 3 to five minutes inbetween =
attempts to get it started. When I am just a moments away from tears =
and or
tantrums the bitch starts. I have tried putting the gasoline =
additive in to
clean things out, but this has not solved the problem. I am thinking =
that it
is something electrical; that some how the power to the fuel =
injection is
shorting out somewhere. I have taken it into a mechanic to have it =
checked
out and fixed, but since it did not die while he was driving it or =
refuse to
start for him, he said he couldn't find anything wrong with it. I =
had
explained all the symptoms to him as I have listed above, but he had =
not
clue what was wrong. I really want to be able to go into the next =
mechanic
with some kind of info as to what it might be. If you have any idea =
please
let me know. I can be reached at
=
lizulfisa@hotmail.com.
Thankyou!
_Lisa
=
-Mark
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<=
BR>Words
certainly evoke the imagination.
Photography, however, evokes =
emotion.