Tips wanted for diagnosing an intermittent CEL.

[Blackbeard]

I've got a 93 Astar with a CEL that comes on and goes off randomly. Any tips on how to diagnose that? Doesn't the CEL need to be on to pull a code with a scanner? The only thing I can think of is to drive around with the scanner and pull over immediately. It doesn't come on at idle and sometimes its only on for seconds before going off again.

 

[BrooklynBay]

Scan the computer after you see the check engine light turn on. The code should be stored in the memory.

 

[Blackbeard]

Will do. Thanks.