STUMBLING PROBLEM
Hello my crown victoria keeps stumbling when accelerating with the gas peddle down about an inch. On heavy acceleration - it's not a problem. Only when casually pulling out. The check engine light was on - and the local repair shop put in a "DPFE Sensor for EGR Valve" and a new EGR Valve. Then engine check light is now off - however after $355 in repairs - it's still not fixed? What to do next? Help!! Thanks cliff in Maine