98 GS 300 idle
08-23-17, 09:33 AM
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08-23-17, 01:41 PM
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Yes. Inbox me at denersonc@bellsouth.net
08-23-17, 02:19 PM
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08-24-17, 10:51 AM
#10
Ok, so it is going to be one of these three parts:
From my experience I always go for the Throttle Control Motor first, but here is how you can inspect to see which it is:
Lastly, here is a thread with instructions for doing the repair:
https://www.clublexus.com/forums/gs-...placement.html
Hope this helps, it should be a fairly easy repair to do yourself.
You can't really rebuild the throttle control motor. You can however repair the throttle body by replacing the broken parts. There are 3 electronic parts to the throttle body.
1. APS = Acclerator pedal position sensor
2. TPS = Throttle plate position sensor
3. Throttle control motor
1. APS = Acclerator pedal position sensor
2. TPS = Throttle plate position sensor
3. Throttle control motor
INSPECT THROTTLE CONTROL MOTOR for operating sound.
(1) Turn the ignition switch ON.
(2) When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
If operation is not as specified, check the throttle control motor,
wiring and ECM.
(a) Disconnect the throttle control motor connector.
(b) Using an ohmmeter, measure the resistance between terminal
3 (CL–) and 4 (CL+).
Resistance: 4.2 – 5.2 W at 20°C (68°F)
(c) Using an ohmmeter, measure the resistance between terminal
1 (M+) and 2 (M–).
Resistance: 0.3 – 100 W at 20°C (68°F)
If the resistance is not as specified, replace the throttle control
motor.
(d) Reconnect the throttle control motor connector.
INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the throttle position sensor connector.
(b) Using an ohmmeter, measure the resistance between terminals
VC and E2.
Resistance: 1.2 – 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the throttle position
sensor.
(c) Reconnect the throttle position sensor connector.
INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a) Disconnect the accelerator pedal position sensor connector.
(b) Using an ohmmeter, measure the resistance between terminals
VC and E2.
Resistance: 1.2 – 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the accelerator pedal
position sensor.
(1) Turn the ignition switch ON.
(2) When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
If operation is not as specified, check the throttle control motor,
wiring and ECM.
(a) Disconnect the throttle control motor connector.
(b) Using an ohmmeter, measure the resistance between terminal
3 (CL–) and 4 (CL+).
Resistance: 4.2 – 5.2 W at 20°C (68°F)
(c) Using an ohmmeter, measure the resistance between terminal
1 (M+) and 2 (M–).
Resistance: 0.3 – 100 W at 20°C (68°F)
If the resistance is not as specified, replace the throttle control
motor.
(d) Reconnect the throttle control motor connector.
INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the throttle position sensor connector.
(b) Using an ohmmeter, measure the resistance between terminals
VC and E2.
Resistance: 1.2 – 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the throttle position
sensor.
(c) Reconnect the throttle position sensor connector.
INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a) Disconnect the accelerator pedal position sensor connector.
(b) Using an ohmmeter, measure the resistance between terminals
VC and E2.
Resistance: 1.2 – 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the accelerator pedal
position sensor.
Lastly, here is a thread with instructions for doing the repair:
https://www.clublexus.com/forums/gs-...placement.html
Hope this helps, it should be a fairly easy repair to do yourself.
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