John usually this is related to the Temp II Sensor which is the blue one
located in the thermostat housing.  You can try unplugging it (went it
won't start) and then using a paperclip to bridge the two contacts inside
the plug together.  Make a U shape out of the paperclip and insert each
prong into the metal contact of the blue plug.  Now try to start the van.
If it starts right up, or after a little cranking, then you need a new Temp
II sensor.  If not then you might need to get out an ohm meter and start
doing some tests on the wiring and grounds.

Ken

On Tue, Apr 25, 2017 at 9:37 AM, John Rodgers <jrodgers113@gmail.com> wrote:

> Dennis, whether hot or cold, the starter turns the engine rapidly and
> easily. When cold, it starts easily. When hot, it turns easily but
> absolutely will not fire. Let it cool a while, and it fires right up.
>
> This engine is a 2.1L WBX with a new diesel TDI starter.
>
> John
>
> On Apr 24, 2017 22:25, "Dennis Haynes" <d23haynes57@hotmail.com> wrote:
>
> > What do you mean by not starting?
> > Does the starter not turn the engine over?
> > Does the engine turn over but not fire?
> > Makes a big difference in our responses.
> > Warm/hot restart (engine firing) issues can be caused by a number of
> > things. Bad temp 2 sensor or connection (including ground) can cause an
> > over rich condition on a warm engine which will prevent firing bad spark
> > plugs or a weak ignition coil can also cuase this symptom.  So will a
> > leaking fuel injector.
> >
> > Dennis
> >
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> > Of John Rodgers
> > Sent: Monday, April 24, 2017 10:29 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: 2.1 WBX - Cold starts easy, Hot - failure to start
> >
> > On cold starts it runs good, idles good, no missing at any speed.
> >
> > After a shut down, it takes 45 minutes or so before it will start!
> >
> > Suggestions!
> >
> > John
> >
>

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