Having to drive my son's Honda while my '88 Vanagon is laid up for engine
conversion.

Keeping up with highway traffic - 80 mph - engine quits suddenly. No
warning. Like someone turned off the light switch. Car slowed to 60, the
power came back on. Gently accelerated back up, and again the light switch
thing. I found - and find- if I cruise betwwen 50 and 60 it runs fine. No
worries, not even a sputter. Someone told me they thought there was an
overspeed safety shutoff switch on some years of these cars, but I've not
found any mention of it anywhere, Has anyone experienced anything like
this??

John