This tool can be a handy way to get to the bottom of things without
needless parts purchases or fruitless parts swapping. We were almost
home from a long trip a few months ago when our new 87 van suffered the
"won't start and don't hear the fuel pump" scenario. My wife was pretty
pleased when I whipped this bypass tool out, hooked it up, and got us home.

http://www.thesamba.com/vw/forum/viewtopic.php?t=349429&highlight=bypass+tool

Mark

>
>
> John Goubeaux wrote:
>> Hi Guys,
>>
>> 2WD 90 2.1
>>
>> I'm trbl shooting a NO start scenario.
>>
>> Starter cranks over the engine just fine. I Do NOT hear the FuelPump pre
>> cycle  - at all - when ignition goes to the ON stage SO I headed in that
>> direction and used the  FuelPump Relay diagnose from this page:
>> http://www.vanagonparts.com/fuel_pump_relay.html - which BTW looks like
>> it is derived from the "Dijifant Guide"
>>
>>