Definition of error po171
SOURCE: P0153 error code for 2000 Ford Taurus SES V6 3.0L
the tech is right.. the trouble codes do not tell you what is wrong with the car... they just give you a general area to look in which involves testing multiple components and sensors. if the tech quoted you for and hour diag time i would say that you should at least expext to spend somewhere in the 300$ area depending on part cost.
SOURCE: Its an 2000 Ford Mustang with an engine code
take it to your local autozone and have them do acel test on it. they can tell you what system is not working properly
SOURCE: 2000 Taurus: Where is the fuse box in my 2000 ford taurus...
The cabin fuse box is located under the dash on the drivers side and the main fuse box is under the hood in the front of the engine above the radiator on the drivers side
SOURCE: airbag code 36 2000 ford taurus se wagon
Unless the air bag has been deflated, call your local dealer and ask this question??? perhaps a computer glitch??
SOURCE: 2000 Ford Explorer, trouble code #PO171
PO121 : TP Sensor Performance = The PCM supplies 5V to the TP sensor(throttle position). The TP sensor is a variable resistor that drops the voltage to about 4 volts at WOT(wide open throttle) to less than 1 volt at closed throttle. Some TP sensors are adjustable. others have a learn procedure to determine closed throttle. PO171 Fuel Trim System Lean = In closed loop the PCM adjusts fuel delivery based on H2OS 1 readings and is indicated by long & short fuel trim values. If lean the PCM will add fuel (fuel trim above 0%) & if rich the PCM will reduce fuel(fuel trim below 0%) PO128 ECT Below Thermostat Regulating Temperature = possible failed thermostat, low or empty on coolant, Engine Coolant Temp Sensor, Poor connection/Harness/Wires, faulty PCM Connection. I think you hit the nail on the head , the ECT Sensor ( which is different than the temp sensor for the dash gauge)
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