Hello,
I have a 1999 9-3 Saab that has 125,000 miles, recently it had a (DIC) Direct injection module go bad, after replacing witha used one and running for approximately one month this DIC has now gone bad. The spark plugs are resistive NGK plugs and are gapped correctly. Can anyone tell me what might be causing these modules to go bad.

Thanks

 

Well you got a used one for a replacement with unknown history... since we all know that those are consumables, I'd say it was just the fact that it was an old, used unit. New ones are 250 for a red one...