failing cat pops into my mind.
I just had one doing that ..
piece junk of cat material was loose inside....sometimes those can turn
sideways blocking exhaust flow.

course same is true for fuel pick up in the tank sometimes.

'It's just a blockage or leakage of fluids or electrons.'

I rarely find a bad ECU ..though very possible of course.

----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, June 13, 2010 11:40 AM
Subject: Re: Vanagon 2.1 Suddenly Dies- Need Help

> At 08:25 AM 6/13/2010, Todd Olson wrote:
>>88 vanagon 2.1 suddenly dies after warm up, will restart but then dies
>>quickly. If i let it set and cool for 10 minutes it will run a little
>>longer. if i let it sit over night it will go about 3 to 4 miles until it
>>gets warm then dies again. i checked fuel pressure and it was 35 to 40 psi
>>when running, I changed the temp sensor that goes to the computer and this
>>made no change. any thoughts or opinions on where i should look next would
>>be greatly appreciated. thanks in advance.
>
> Find out is it fuel or ignition that's dying.
>
> If possible, try a working ECU -- I suspect this is an ECU
> problem.  Otherwise check with screwdriver/stethoscope/'noid light
> for injectors firing, check for presence of spark.  Report results
> and we'll go from there.
>
> Yours,
> d