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Subject:Re: Bucking, hesitation between 1500 and 2500 RPM when hot
From:Jerry
Date:Wed, 11 Feb 2009 19:25:47 -0600

Since my Vanagon is an early 88 with wiring configuration
of an 87, then the fuel injection wiring check of continuity
between terminal #12 and terminal #86 of the fuel pump relay
should indicate 3-5 ohms? Correct?

As according to Bentley for an 87 Vanagon the fuel injection
circuit includes terminal #86 of the fuel pump relay.

My reading indicated 4 ohms resistance.

Thanks a bunch!

JB 88 GK Guido

On 2/11/09 7:08 PM, "mdrillock" <mdrillock@COX.NET> wrote:

> Ok, that is a very early 88, first couple weeks of model year
> production. Not surprising that it has the 87 wiring setup if it does.
>
> Vanagon production was about 150,000 per year, most years, 10,000
> -15,000 per month.
>
> Mark
>
> Jerry wrote:
>> 005235
>>
>>
>> On 2/11/09 6:05 PM, "mdrillock" <mdrillock@cox.net> wrote:
>>
>>
>>> There are small or big mistakes in all of the sources of testing
>>> procedures and wiring diagrams. The Pro Training manual is wrong in that
>>> it treats all 2.1 years the same when they are not the same.
>>>
>>> Wherever that test for ECU pin 12 to FP relay pin 87 came from, it is
>>> wrong to say Zero ohms expected. The actual expected reading depends on
>>> the version of the 2.1 FI harness you have. If you look at the 1990
>>> Bentley diagram you will see an important change to this area in that
>>> the injector power comes from the FP relay instead of the ECU relay.
>>> This change actually may have occurred earlier than 1990 and my old 1988
>>> had the 1990 setup. It sounds like yours has the 87 type setup. What are
>>> the last 6 digits of your vin?
>>>
>>> Mark
>>>
>>>