Question about Ford Ranger
Hi, I recommend you test the throttle position sensor--it may be worn out. Procedures for test and replacement are listed below. Please let me know if you have any questions. Fig. Fig. 1: The Throttle Position (TP) sensor is mounted on the throttle body
OPERATION See Figure 1
The Throttle Position (TP) sensor is a potentiometer that provides a signal to the PCM that is directly proportional to the throttle plate position. The TP sensor is mounted on the side of the throttle body and is connected to the throttle plate shaft. The TP sensor monitors throttle plate movement and position, and transmits an appropriate electrical signal to the PCM. These signals are used by the PCM to adjust the air/fuel mixture, spark timing and EGR operation according to engine load at idle, part throttle, or full throttle. The TPS is not adjustable.
TESTING See Figure 2
WARNING Ensuring the DVOM is on the voltmeter function is vitally important, because if you measure circuit resistance (ohmmeter function) with the battery cable connected, your DVOM will be destroyed.
Fig. Fig. 2: TP sensor wire harness connections
REMOVAL & INSTALLATION Disconnect the negative battery cable. Disengage the wiring harness connector from the TP sensor.
Remove the two TP sensor mounting screws, then pull the TP sensor out of the throttle body housing.
Fig. Fig. 1: The Throttle Position (TP) sensor is mounted on the throttle body
Posted on Apr 11, 2011
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Posted on Jan 02, 2017
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