Question about 2003 Ford Ranger Regular Cab

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2003 Ford Ranger Heat Sensor

Would a defective heat sensor cause my truck to run very rough?

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  • Rob Richards May 11, 2010

    By heat sensor, do you mean the ECT (engine coolant temperature sensor). If that what your referring to it could cause the problem but does the engine run rough when warmed up or when cold or both? Are you getting poor fuel economy?

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If you are referring to the coolant temp sensor and not the coolant temp switch,then yes,this sensor tells the ecm what temp the engine is at and the ecm delivers the correct amount of fuel to the vehicle.The switch in most cases just sends the signal to the guage or light.

Posted on Feb 06, 2009

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