I am trying to fix my sisters 94 grand caravan 3.3, I have replaced the fuel pump and fuel filter. The van drove great for two days and then died. If you wait approx. 30 mins, it will start right up and run for approx. 4 mins, then dies again. I reset the computer, and checked the codes using the iginition key, and I got code 43. Any help would be appriciated. Thanks.

 

Code 43 means single cylinder or multiple cylinder misfire, or peak primary circuit current not achieved with maximum dwell time.
When it dies, does it die from lack of fuel, no spark, or what? Try switching some of the relays around (mainly the Automatic shutdown relay and the fuel pump relay).