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Misc. Throttle Body sensor info

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Old 04-30-2009, 10:05 PM
baracis baracis is offline
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Default Misc. Throttle Body sensor info

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Service and Repair

1. Remove air duct and air resonator box at throttle body.
2. Disconnect throttle body electrical connectors at IAC motor and TPS (3), (4), and (5).
3. Remove vacuum line at throttle body.
4. Remove all control cables from throttle body (lever) arm.
5. Remove three throttle body mounting bolts (1).
6. Remove throttle body from intake manifold.

INSTALLATION
1. Clean throttle body-to-intake manifold O-ring (2).
2. Clean mating surfaces of throttle body and intake manifold.
3. Install throttle body to intake manifold by positioning throttle body to manifold alignment pins.
4. Install three mounting bolts (1). Tighten bolts to 12 N.m (105 in. lbs.) torque.
5. Install control cables.
6. Install vacuum line to throttle body.
7. Install electrical connectors.
8. Install air plenum.

Throttle Position Sensor Service and Repair

REMOVAL
The TPS is located on the throttle body (2).

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1. Remove air duct and tube at throttle body.
2. Disconnect TPS electrical connector.
3. Remove two TPS mounting bolts (screws) (5).
4. Remove TPS from throttle body.

INSTALLATION

The throttle shaft end of throttle body (5) slides into a socket in TPS (4). The TPS must be installed so that it can be rotated a few degrees. If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs. The TPS will be under slight tension when rotated.

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1. Install TPS and two retaining bolts.
2. Tighten bolts to 7 N.m (60 in. lbs.) torque.
3. Manually operate throttle control lever by hand to check for any binding of TPS.
4. Connect TPS electrical connector to TPS.
5. Install air duct/air box to throttle body.

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The intake manifold air temperature (IAT) sensor (3) is installed into the left side of intake manifold plenum.

1. Disconnect electrical connector from IAT sensor.
2. Clean dirt from intake manifold at sensor base.
3. Gently lift on small plastic release tab (4) and rotate sensor about 1/4 turn counter-clockwise for removal.
4. Check condition of sensor O-ring.

INSTALLATION

1. Check condition of sensor O-ring.
2. Clean sensor mounting hole in intake manifold.
3. Position sensor (3) into intake manifold and rotate clockwise until past release tab.
4. Install electrical connector (2).

IAT Diagram

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The intake manifold air temperature (IAT) sensor (3) is installed into the left side of intake manifold plenum.

The IAT sensor provides an input voltage to the Powertrain Control Module (PCM) indicating the density of the air entering the intake manifold based upon intake manifold temperature. At key-on, a 5-volt power circuit is supplied to the sensor from the PCM. The sensor is grounded at the PCM through a low-noise, sensor-return circuit.

IAT FUNCTION:

The PCM uses this input to calculate the following:
Injector pulse-width
Adjustment of spark timing (to help prevent spark knock with high intake manifold air-charge temperatures)
The resistance values of the IAT sensor is the same as for the Engine Coolant Temperature (ECT) sensor.
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  #2  
Old 05-01-2009, 09:07 PM
ericemery
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I am going to leave this thread open, but only to post requests of certain things. Keep in mind, Baracis is doing this for the good of the forum, and is not obligated to post anything.
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Old 05-01-2009, 09:07 PM
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92, body, clean, dakota, diagram, dodge, electrical, install, position, remove, sensor, sensors, stratus, temperature, throttle

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