Why would a car stall after driving 30 minutes?

It could be a coil depending on where the module was bought it could even be a defective module

I had a very similar problem with a 93 Buick regal. Finally got it fixed and found there was a problem with a cam sensor and it was telling the computer there was an error and the comp would shut the car down. This was a terrible problem for me to get fixed. Hope this is helpful, I feel your pain.

had the same problem with a Lincoln, was told the same things, change the fuel filter, and let me know, sounds stupid but it worked for me