99 Chrysler Sebring 2.5L V6 P0171 Fault: Engine Dies, No Power, Fuel Pump Sound, Post-Service Diagnosis
My daughter was driving home when the car suddenly died, as if it had run out of fuel or lost all power. I heard the fuel pump engage, so I connected an OSBII scanner and retrieved a P0171 code — indicating a lean air-fuel mixture in Bank 1. I've confirmed that the timing belt is intact and turning the crankshaft properly. No check engine light appears when performing the three-key-on sequence. Just one month ago, I completed several major repairs: new head gaskets, machined cylinder heads, water pump, coolant hoses, thermostat, and spark plugs. Given this history, I'm concerned that a recent repair may have introduced an issue. The P0171 code suggests possible fuel delivery or air intake problems — especially after such extensive work. Any advice on diagnosing the root cause would be greatly appreciated.
The distributor is a known failure point in the 99 Chrysler Sebring 2.5L V6 engine, especially after maintenance work or when exposed to heat and vibration.