Temporary no start?!?

[Effieman]

Can anyone help me understand this?

Last week, my 98 didn't want to start. It would crank though. Cranked for 5 to 10 seconds each time.
Shot some starting fluid...no start.
Next day, checked coil pack... all checked good, still no start.
Battery started going dead.
Made appt for next day at local shop and called tow truck. When tow truck showed up, he jumped it... IT STARTED.
Drove it for 15 minutes and everything has worked since.
Took out the battery and charged it. 20+ hours after charging, my battery tester said it was good. 'health 59%', 12.7 volts and 467 CCA (battery is listed as 610CCA)
Now I'm paranoid it'll happen again.

Any ideas on any of this?

 

[pentode]

When you say "checked the coil pack" what exactly did you do to check it?

Did it fire at all or absolutely nothing?

 

[Effieman]

I just checked the resistance of the coils. All were in spec according to Chilton manual (0.3 to 1 ohm)
It seemed to not even try to spark even with the ether.

 

[pentode]

My first thought given that would be check the connection from the computer to the coil pack. Corrosion etc.

It's not going to be battery side IMHO