Hi, I recall some earlier discussion on a type of diagnostic device that one
can plug in line, and read diagnostic codes as you are driving along.  I
understand that it helps to detect intermittent problems.  I have had a very
infrequent stalling and delayed restart problem, that compelled the
previous owner of my 86 vanagon to replace just about every electrical part
on the engine except the fuel injection system.

Any opinions on where I can find one of these and whether it is a worthwhile
testing tool would be appreciated.

Thanks, Jeff Hartman
Juneau, Alaska