How do you replace a throttle body - 2002 Saturn L-Series

Its rare that you have to replace the whole throttle body. The code given indicates its the throttle position sensor on the side of the throttle body. Its parallel from the actual throttle and fyi to you it only that's 10 mons to replace so don't get ripped off

I looked into your year and it does not look like a replacement throttle body actuator is available. In case you want to know. The "Throttle Body Sensor" and "Throttle Position Sensor" are all inside the throttle actuator. They can not be separated and replaced. For your year, the throttle body and actuator are sold as an assembly.

It is located in the throttle body assembly . Your vehicle has electronic throttle control .
Throttle Body Assembly
The throttle body assembly contains the following components:
?€¢
The throttle blade

?€¢
The throttle actuator motor

?€¢
The throttle position (TP) sensor 1 and 2

The throttle body functions are similar to a conventional throttle body with the following exceptions:
?€¢
An electric motor opens and closes the throttle valve.

?€¢
The throttle blade is spring loaded in both directions and the default position is slightly open.

?€¢
There are 2 individual TP sensors within the throttle body assembly.

Oh yea it has two TPS - throttle position sensors ! An you have to replace the whole assembly !

Your vehicle has electronic throttle control an the Throttle position sensor's are internal to the throttle body assembly ! Your vehicle has two throttle position sensors .
Throttle Body Assembly
The throttle assembly contains the following components:
?€¢ The throttle blade ?€¢ The throttle actuator motor ?€¢ The throttle position (TP) sensor 1 and 2 You have to replace the Throttle Body Assembly !
Disconnect the negative battery cable. Remove the inlet hose assembly from the throttle body. Disconnect the throttle body electrical connection. Disconnect the hose clamps from the plenum-to-runner connector using theJ 43914 .
Remove the intake plenum bolts. Remove the EGR passage bolt. Rotate the plenum up and remove the throttle body coolant hoses, EVAP hose, and vacuum line from the throttle body.
Remove the throttle body nuts. Remove the throttle body.

Locate your air intake. At the opposite end from where the air enters you will find your Throttle Body. There should be two sensors attached to your throttle body. The Throttle Positioning Sensor, and the Idle Air Control Valve.
On my vehicle the TPS is located at the bottom of the throttle body. The IACV is located on the side.
Since I cannot see your particular installation you will have to be the judge as to whether to remove the throttle body or not.
I have learned that it is somewhat easier to remove the Throttle Body in order to replace either of these sensors. And there will be less frustration with dropped bolts and or tools.
Also you will get the sensors installed properly and tightly, then you reinstall a single unit. Be sure to inspect the gaskets on the Throttle Body, and the IACV, replace if damaged in any way.

the sensor is part of the throttle body and not replaceable here is the throttle body replacement instructions as you will have to replace the entire throttle body it is a very common issue with these
THROTTLE BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE

1. Remove the air cleaner intake duct.

1. Disconnect the electronic throttle control (ETC) electrical connector (1) from the throttle body (2).

1. Remove the heater pipe nut at the throttle body.
2. Remove only the heater inlet pipe.

1. Remove the nuts and the bolts from the throttle body.
2. Remove the throttle body assembly.
3. Remove the throttle body gasket.
4. Clean and inspect the throttle body gasket mating surfaces.

NOTE: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.

INSTALLATION PROCEDURE

1. Install a new gasket, if necessary.
2. Install the throttle body assembly.
3. Install the throttle body nuts and the bolts.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the nuts and the bolts to 10 N.m (89 lb in) .

1. Install the heater inlet pipe.
2. Install the heater pipe nut to the throttle body.

Tighten the nut to 25 N.m (18 lb ft) .

1. Connect the ETC electrical connector (1) to the throttle body (2).
2. Install the air cleaner intake duct.

sounds like throttle body not fitted correctly or needs adjustment of idle sensor or idle speed control

InstructionsThings You'll Need

• Mechanic's toolset, including a full socket set, wrenches and screwdrivers
• Torque wrench
• Clean shop cloths
• Replacement gasket

1. • 1

     Take out the air cleaner resonator. Disconnect the harness connectors for both the idle air control and the throttle position sensor. Label and then remove all the vacuum hoses from the throttle body.
     

   • 2

     Remove the bracket and the cables for the accelerator control from the throttle body. Loosen and remove the throttle body fasteners.
     

   • 3

     Lift the throttle body off the manifold. Remove the throttle body gasket and inspect it carefully. Replace the gasket as needed or re-install the old gasket to the throttle body after cleaning all the mating surfaces thoroughly.
     

   • 4

     Set the throttle body on the manifold and finger-tighten the fasteners. Torque the bolts to 89 inch pounds.
     

   • 5

     Install the cables and bracket for the accelerator cable, then reconnect the vacuum hoses. Reconnect the harness connectors for the throttle position sensor and the and idle air control valve, then replace the air cleaner resonator.
     

   • 6

     Depress the accelerator pedal to test its movement and to assure that there is no binding. Press the pedal to the floor one time then release it. Make the necessary adjustments.
     

all the codes point to throttle body. clean throttle body, especially around throttle plate. check for loose wires, if problems persist. replace throttle body. p2104 is tac system forced idle, p2111 is tac system stuck open, p2112 is tac system stuck closed. clean throttle body good, and see if this fixes it. then go from there. have a good day !!

You'll have to remove the throttle body to replace the idle air control (IAC) valve. First, disconnect the negative ground cable from the battery. Then remove the vacuum line and air duct intake. Then disconnect the IAC and throttle position sensor (TPS) electrical connections. Remove the coolant hoses that are connected to the IAC. Disconnect the throttle cable from the throttle body. Now, remove the 4 bolts that hold the throttle body to the manifold and remove. Be careful with the gasket located between the throttle body and manifold and replace it in the same position. On your clean work surface, turn the throttle body over and remove the 4 phillips head screws holding the IAC to the throttle body. Clean the parts with a dry cloth but do not use solvents on the IAC or TPS. That's it!