Question about Ford Cars & Trucks
Scan tool diagnostics not showing a failure code. Ran different parameter tests and all SAT. Yet have this degraded condition with fuel gauge moving around? I must be over looking something? Need a diagram of fuel system and wiring for fuel gauge.
Posted by Anonymous on
Most likely the sending unit attached to the fuel pump module is the source of the erratic fuel gauge. The fuel pump is located in the fuel tank and can be accessed through a panel located under the drivers rear seat.
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Posted on Oct 09, 2016
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Posted on Jan 02, 2017
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Evaporative Emission Control System Incorrect Purge Flow
What does that mean?
This indicates that a part of the EVAP control system is no longer functioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
EVAP emission canister purge is controlled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light.
A code P0441 could mean one or more of the following has happened:
With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
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