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 > 
> To summarize, during the 2 months since I bought the van, the dealer has =
> replaced:
> 				O2 sensor
> 				Water temp sensor
> 				Fuel pump
> 				Fuel filter
> 				Air flow sensor
> 				ECU
> 				Some sort of idle relay
> 
> After each of these disturbances, it runs okay for as much as 50 miles =
> or as little 5 miles, but when the symptoms return, they then recur =
> every 30 seconds, requiring a quick "switch off, switch on" (rebooting =
> the ECU) to keep running.  (Since the dealership is 50 miles away, it =
> only takes about 100 reboots to make the trip.)  I have perused the mail =
> dealer is continuing to experiment, I'm just about ready to give up.
> Thanks,
> 	Bob
> 

       I had a very similar problem that the dealer could not fix!
       It was the middle of the winter and I didn't have a place out
       of the snow to work on it. So I thought a VWoA dealer was the 
       best thing. Man was I wrong. They wanted to put a computer in.
       6 weeks later after the snow was melting I fix it by replacing
       a wire. I simply traced out every wire in the engine compartment
       from the computer to the engine. Found the temperature sensor
       not making a connection. Pulled on the wire right there in the
       engine compartment where the engine rocks and found the break.
       I then replaced the entire wire to the computer. I haven't has 
       that problem since.
    
       Your symptoms sound just like mine. The only other thing I 
       know of that will can cause these symptoms is the O2 sensor. To
       check this just disconnect the single wire plug. This is a good 
       temperary check. Or a temerary fix to get you home.

                 let us know what you find
                     
     P.S. I have now found this as a regular problem in 4 Vanagons.

            Eric Zeno