I was going to suggest this too, but  you said that you replaced ALL!
of the sensors ?????   I believe that it has been discussed on the list
that the ECU will run in "default" mode if a sensor is unplugged (just
like it does for the first few minutes of operations) so try unpluging
one sensor at a time and try and run the van, I  think that this may
help isolate the problem.  I may be wrong about this and if I am, I
hope others will put me right.  malcolm (only a shade tree mechanic)

On 18 Mar 2002 at 14:31, Laurence Smith wrote:

> Jack,  Make sure you have a good ground wire for the green coax O2
> sensor.