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2003 Dodge Dakota 4.7L V8 Throttle Position Sensor, TPS and Idle Air Control IAC Valve Location

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Published on Aug 15, 2012

Where is the Throttle Position Sensor (TPS) on my 2003 Dodge Dakota 4.7L V8?
Where is the Idle Air Control Valve, (IAC) on my Dakota?
Getting Trouble Code P0121, P0122, P0123 or P0068?
In this short video I'll show you EXACTLY where they are in full color. Stop wasting time looking through manuals and pdfs.

Check the TPS sensor out by:

1. Remove the air cleaner so that you have access to the throttle plates
and can see them.

2. Use a DVM on the 10volt DC scale.
Black (ground) of the dvm to engine ground, and BACK PROBE the red lead of the dvm
THROUGH the insulation on the MIDDLE wire, with the TPS sensor still bolted on the throttle body, and plugged in.

3. Turn on the key..DO NOT START!

4. With the meter on the middle wire of the TPS sensor, move the throttle plates smoothly (via the throttle linkage) by hand, from fully CLOSED to fully OPEN, while watching the reading on the meter.

Readings should be: 0.5volts with throttle CLOSED
anywhere from 3.8volts to 4.5volts with throttle FULLY OPEN.

Hope this helps get you back on the road.
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