Common Symptoms
- Check engine light illuminated
- Poor fuel economy
- Hard starting when engine is hot
- Rough idle or hesitation during acceleration
- Engine may run rich or lean intermittently
- Fuel gauge may read incorrectly on some vehicles
Most Likely Root Causes
- Faulty fuel temperature sensor
- Open circuit or damaged wiring in fuel temperature sensor harness
- Corroded or loose connector at fuel temperature sensor
- Short to voltage in sensor signal wire
- Failed powertrain control module
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Component Location
Fuel temperature sensor is typically located in the fuel tank assembly, fuel rail, or fuel supply line depending on vehicle make and model.
Manufacturer Notes
Some Ford vehicles use a fuel temperature sensor integrated into the fuel pump module assembly requiring complete assembly replacement.
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