Question about Lincoln Navigator

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I have an 2006 lincoln navigator and i had 2 codes p2104 and p2112 i changed #2 spark plug and coil then i got a fail safe mode turned truck off then back on then went away then i got the two codes p2104 forced idle and p2112 throttle actuator control system actuator stuck closed now the codes are gone but my diagnostic tool has a yellow light like the codes are pending and the problem is still there a hesitate a jurk when i press the gas i dont know what to do i even replaced throttle position sensor are there two of them please help

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Hi, there is a post here on this issue: http://www.fordf150.net/forums/viewtopic.php?t=50060&highlight=p2104

Since you have already changed the TPS, I assume you also cleaned the throttle body? Is the throttle actuating smoothly? If not, make any repairs needed to make it smooth and easy to rotate the throttle.
If the throttle is good, then test the accelerator position sensor per the procedure below.
Please let me know if you have any questions, and thanks for using FixYa.
OperationThe APP sensor is an input to the powertrain control module (PCM) and is used to determine the torque demand. There are 3 pedal position signals in the sensor. Signal 1, APPS1, has a negative slope (increasing angle, decreasing voltage) and signals 2 and 3, APPS2 and APPS3, both have a positive slope (increasing angle, increasing voltage). During normal operation APPS1 is used as the indication of pedal position by the strategy. The 3 pedal position signals make sure the PCM receives a correct input even if 1 signal has a concern. There are 2 reference voltage circuits and 2 signal return circuits for the sensor.
Removal & Installation

  1. Disconnect the battery ground cable.
  2. Disconnect the accelerator pedal position sensor electrical connector.
  3. Remove the 3 bolts and the accelerator pedal assembly.

To install:
  1. Install the 3 bolts and the accelerator pedal assembly.
  2. Tighten the mounting bolts to 18 ft. lbs. (25 Nm).

Testingi have an 2006 lincoln - jturcotte_1769.gif

Fig. 5.4L APP sensor connector

  1. Checking the VREF voltage to the Accelerator Pedal Sensor

    Turn the ignition switch to the off position. Disconnect the Accelerator Pedal sensor connector. Measure the voltage between pin 6, 7 (ETCREF+) and 1, 3 (ETCRTN-). The voltage should read between 4-6 volts, If not repair circuits in question.
  2. Checking the Functionality of the APP sensor.

    Turn the ignition off. Disconnect the Accelerator Pedal sensor connector. Refer to Resistance Chart:

    jturcotte_1770.gif

    Fig. APP Diagnostic resistance chart

Posted on May 27, 2011

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Shop around before buying. The prices vary greatly.

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That could be anything from-----simply spraying the throttle
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