hesitation

Recently my mazda 6 03 (3.0 v6 sport) Originally it kept dieing, after being warmed up it would die I replaced the EGR valve and fixed the random dieing now it runs and idles good but it has hesitation when I rapidly mash on the gas pedal it studders and settles down. But when I slowly increase...

So I've inherited this wagon from my dad when he passed away in April. I'm beginning to think the car wants to join him with only 139,000 miles on it. Two weeks after he passed the car broke down. I replaced the broken serpentine belt, a cracked pulley and 2 bald tires for $650.00 at monroe...