Stalls out but can't find anything wrong with the car

Maintenance/Repairs
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1

2002 saab 9.3. occassionally stalls out at a light without warning and won’t start again.just click click.can’t find anything wrong with the car. checked alternator,battery, no codes came up on the computer.

2

More details.

 [i] stalls out at a light without warning and won't start again.[/i] 

 If it stalls and won't start again, how would there be an "again"?  Hint: how do you get it started after it stalls the first time?  

 How many miles on it?  When was the last time it had new plugs, wires, air filter, oil filter fuel filter?
3

after it rests for hours, it just starts right up. has regular oil changes. plugs, etc done a year ago.

4

86,000 miles

5

How old is the battery? Are the battery connections clean and solid?

6

new battery aug 2009. all the basics have been done and or checked