My friends 88 Plymouth Grand Fury cuts off after a while and has to wait 2 or 3 minutes before it cranks back up. I replaced the Ballastor and cleaned the carb with carbcleaner. The car never stalls or runs groggy. It just cuts off. Any ideas what this might be? Fuel filter maybe but that would make it stall etc on take offs? Fuel Pump?

318 engine