Common Symptoms
- Check engine light illuminated
- Rough idle or hesitation during acceleration
- Poor fuel economy
- Hard starting when engine is warm
- Engine runs rich with black smoke from exhaust
- Extended cranking time before engine starts
Most Likely Root Causes
- Faulty fuel temperature sensor
- Shorted wiring or connector pins in fuel temperature sensor circuit
- Damaged or corroded fuel temperature sensor connector
- Short to ground in sensor wiring harness
- Failed powertrain control module
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Component Location
Fuel temperature sensor is typically integrated into the fuel sender unit inside the fuel tank or mounted on the fuel rail.
Manufacturer Notes
Some manufacturers integrate the fuel temperature sensor with the fuel pump module requiring complete assembly replacement.
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