John, this is a really common issue.  Usually this is caused by a faulty
temp II sensor.  That is the blue sensor that is located in the thermostat
housing.  It becomes faulty and tells the computer that the engine is still
cold.  So the van starts up fine then once it warms up you go to a gas
station, stop for gas and go to leave it is flooding the motor out.  You
can test this very easily.  Unplug the sensor and using a paper clip,
bridge the two pins inside the plug together.  The van will start like this
but you will have to hold your foot on the gas until it warms up.  Once
warm you can drive anywhere you want, shut it off, turn it back on, and it
will be fine and not leave you stranded.  Of course this is just a
temporary fix that helps in an emergency.  You need to replace your temp
sensor as soon as you can.  Let me know if I can help you further.

Ken Wilford
John 3:16
www.vanagain.com

On Thu, Jun 5, 2014 at 1:18 PM, JRodgers <jrodgers113@gmail.com> wrote:

> Thanks Jeff.
>
> If I let it cool down for an hour - that seems to fix the problem.
> Failure to start when hot doesn't happen every time - but often enough
> to be really inconvenient at the least.
>
> John
>
>
> On 6/5/2014 11:00 AM, Jeff Palmer wrote:
>
>> John I have a similar problem.  Cranks and cranks when hot until it
>> catches.  Then runs fine.  I find if I let the fuel pump cycle for the full
>> two seconds or whatever that helps.  Hopefully someone has a solution for
>> you that helps me out too!
>>
>> Thanks
>> Jeff
>> 85 Westfalia (with Boston Bob 2.1)
>>
>>
>>

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com