curiousdaniel@gmail.com wrote:
> My girlfriend's '91 Civic has 150k+ miles on it and just started acting
> up. The car runs fine while driving around town, but once we get it up
> to high speeds it will just all of a sudden die the next time we slow
> down. Most of the time it starts right back up within a minute or so,
> but the last time it took about 20 minutes to start up again.
>
> We took it to our regular mechanic, who took it out for a test drive
> and never experienced a problem. He said it might be the fuel pump, but
> that he wasn't sure.
>
> After reading through newsgroups on the subject, it seems that maybe
> the problem is the main relay switch. Any suggestions?

My idea is that the coil is weak and the freeway driving is keeping it
cool enough to work until there's more heat from local driving after
the freeway driving.