Larry L Meyer wrote:

> My 1986 Vanagon with140,000 miles (8000 on a Boston Bob rebuild)  is
> showing the following symptoms.  When I first start it up in the morning
> everything seems fine and it has plenty of power.  After running for
> about a minute it has absolutely no power.  It will idle fine and rev
> normally, but as soon as I let out the clutch it loses all power.  I've
> replaced the fuel filter, O2 sensor, checked the "cat" converter to see
> if it was plugged (no problem there).  What would be the next logical
> thing to check and how do I check it?  Thanks for your wisdom.
>
> Larry in Lincoln

If the problem is temperature related, it seems reasonable to check temp
sensor II.
You could compare its resistance with the specs in Bentley or just go ahead
and replace it.  It is said to be not very expensive.

Larry A. in Chicago