How could one say:
'Well, it was working yesterday'?
Possibly with the exception of the 'well'

Hi charltonian-ga -

Here is the translation of "Well, yesterday it was working"

                Jam, heri fauste gerebat

"Jam" means "well," and you can remove it without affecting the Latin that follows.

I consulted a Latin scholar for this translation.

Here are some websites that may interest you:

Latin phrases used in English
http://www.math.ohio-state.edu/~econrad/lang/lphrase.html

Latin proverbs and locutions
http://leptir.ifs.hr/~mpinter/proloc.html

Google search strategy (for the above websites)

Search terms: Latin proverbs site:.edu

All the best,

Alanna-ga

the translation of "it worked yesterday" is "is opus prid"