hi there, i have a 94 lumina apv as well my service engine light came on the other day and yesterday it died on me three time but started up right away i had a napa mechanic look at at it and put it on a machine, the code said it was a camshaft sensor going bad he said usually when they go out the thing wont start back up again i would have your van put on a machine to findout what it is, u could prob fix it yourself but the mechanic told me there a pain in the but to rplace but it might not be hope this helps. chevy lumina apv loving man