2005 Dodge Durango 5.7L: P0175 Code, Rough Idle, Stalling at Low RPMs
Help! My 2005 Dodge Durango 5.7L has stalled three times in the past month. The most recent incident occurred when the engine would not restart unless I applied throttle—once it did restart, it idled poorly and died immediately when either the gas or brake pedal was touched. After spending four days with a mechanic, we've identified multiple diagnostic trouble codes: MAP sensor, Crankshaft Position Sensor (CPS), and an O2 sensor. We replaced all three components, but the issue persisted—now showing code P0175. The fuel pump, filter, and pressure regulator were also replaced. While the engine now starts, it still idles roughly and stalls whenever RPM drops below 500. Starting becomes more difficult after the engine has warmed up. However, driving at higher RPMs (1000–5000) is fine. I'm not looking to keep spending money on unnecessary repairs—any insights into what might be causing this P0175-related issue? Thanks in advance for any advice!
Please share all diagnostic trouble codes. A proper OBD2 scanner is essential to read them accurately. Confirm whether any aftermarket modifications were installed—these can interfere with sensor readings. Use live data from the scanner to check O2 sensor voltages, ECT (Engine Coolant Temperature) readings, fuel trims, and MAP sensor values. Verify there are no misfire codes present. If none exist, perform a fuel pressure drop test under KOEO (Key On, Engine Off) conditions—observe any drop in pressure over five minutes. A significant drop may indicate fuel system issues.