2000 Ford Windstar LX 3.8L V6 P1309 Code: Causes and Fixes After Intake and Injector Repairs
The 2000 Ford Windstar LX 3.8L V6 engine has been recently serviced with replacement of the upper and lower intake manifolds, new gaskets, bolts, EGR valve, EGR sensor, and exhaust system buildup cleaned. All six fuel injectors were also cleaned, along with new spark plugs and wires. The vehicle runs smoothly initially but begins to run rough after a short period. Despite these repairs, the engine consistently displays diagnostic trouble code P1309. This code is associated with a cylinder misfire detected by the oxygen sensor or related components. Given that the mechanical and electrical components have been replaced and cleaned, the issue may stem from a camshaft position (CMP) sensor malfunction or incorrect timing alignment between the crankshaft and camshaft sensors.
This P1309 code in a 2000 Ford Windstar LX with recent intake and fuel system repairs is likely due to a cam position sensor (CMP) signal issue or incorrect camshaft timing. Ensure the sensor is properly connected, grounded, and that the timing belt is correctly aligned before further diagnostics.