Date: Tue, 6 Mar 2018 13:57:54 -0800
Reply-To: Rick Cooper <rickdcooper@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Rick Cooper <rickdcooper@GMAIL.COM>
Subject: Re: Fuel pressure too high
In-Reply-To: <CAG12aiteU1b6qOFKSRJZ9BDB0CJTfVvgSRVMyWc-rGKxTwoNdg@mail.gmail.com>
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I'm just looking at track 5 on page 97.104 of the Bentley. The wire that
connects to track 33 (Digifant Control Relay) changes its size/guage at P1
-- anyone know what P1 is? Is that the post in the wire distribution box?
Rick
On Tue, Mar 6, 2018 at 1:53 PM, Rick Cooper <rickdcooper@gmail.com> wrote:
> Thanks for the prompt responses; this is frustrating.
>
> So since I do not have power at 30 terminal on the Digifant relay, I must
> have a break in the line between that and the Alt B+ terminal. In tracing
> the wire from the alternator, I thought it entered the wire distribution
> box and connect to the post in the upper LH corner. Is that correct? If
> so, I have no continuity in that line so I'm thinking it needs
> replacement. Does that make sense? If this is not the faulty wire, any
> advice on how to find it?
>
> Thanks again, Rick
>
>
>
> On Tue, Mar 6, 2018 at 1:31 PM, Neil N <musomuso@gmail.com> wrote:
>
>> The fuel pump should go on/off briefly once key is turned to ignition on;
>> it doesn't run after that until engine has started. Try the fuel pump
>> bypass method shown in Bentley? See if pump runs? Theres more to it than
>> this but basically, B+ from alternator stud goes to 30 of fuel and Digifant
>> relay; ignition off or on, you should see battery voltage at each relay 30.
>> With key turned to ignition on, Digifant relay closes so battery voltage
>> should be seen at 87 of that relay. And, you should see same at fuel pump
>> relay 86. Along with my comment above, the ECU controls the fuel pump relay
>> so you'd see battery voltage at fuel pump relay 87 once engine is running
>> but thats kind of a moot thing to say. ;)
>>
>> On my air cooled van that larger hose from bottom of charcoal canister
>> vents to atmosphere. Came from factory like that. It may be that for some
>> markets, this is how that canister is connected. So, say, in US (some? All?
>> states) that hose may have to connect to air cleaner. Up here in BC Canada,
>> maybe not? e.g. I'm pretty sure that same hose does not connect to my air
>> cleaner on my '88 Vanagon.
>>
>> Neil.
>>
>>
>>
>> On Tue, Mar 6, 2018 at 12:48 PM, Rick Cooper <rickdcooper@gmail.com>
>> wrote:
>>
>> ..... In any case, when I put
>>> the recharged battery in this morning, I had no power at the fuel pump
>>> (but
>>> lots of power to turn the starter).
>>>
>>> There's no power at the fuel pump, because there is none at the
>>> "Digifant
>>> Control Unit Relay" (as it is called on page 97.106 (track 34) of the
>>> Bentley wiring diagram. I've got power at the Alt B+ terminal. If I'm
>>> reading the wiring diagrams correctly, that gets power from the Alt B+
>>> terminal (on track 5). So have I broken a wire or is there some other
>>> possibility? .........
>>>
>>> I also discovered this morning that the hose from the bottom of the
>>> charcoal canister was cut and the end stuffed into the adjacent frame
>>> member. The port at the top of the air cleaner has been capped. I was
>>> able to blow air through that hose though with some resistance. Not sure
>>> whether this is related to my fuel supply problems.
>>>
>>> Rick
>>>
>>>
>>>
>>
>> --
>> Neil n
>>
>> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>>
>> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>>
>> 1981 Westfalia "Jaco" Images, technical
>> <http://tubaneil.googlepages.com/>
>>
>> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>>
>
>
>
> --
> *Because **I want my vote to count.*
> *And I want my neighbour's vote to count too. *
> https://secure.fairvote.ca/en/bc-referendum-vote-pledge
>
>
--
*Because **I want my vote to count.*
*And I want my neighbour's vote to count too. *
https://secure.fairvote.ca/en/bc-referendum-vote-pledge
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