Where is the secondary throttle valve actuator located?
The STVA is located on the right side of the throttle body housing. 4) Turn ignition switch on; the secondary throttle valves should cycle all the way open, then close very slightly to 95% open. If the valves close, proceed to step 5. 5) Use contact cleaner to clean the STVA connector. 6) Reconnect SVTA and repeat step 4.
How to remove a 48RE throttle valve actuator?
CHECK THE TTVA POSITIONS WITH THE TTVA REMOVED 1. Turn the ignition off to the lock position. 2. Remove the TTVA from the transmission per the Service Information. (Refer to 21 – Transmission and Transfer Case/Automatic – 48RE/ACTUATOR, Throttle Valve – Removal) NOTE: Check connectors – Clean/repair as necessary.
Is there a problem with the throttle sensor on a Mercedes?
Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, SLK-Class may fail causing idle issues, no idle or poor acceleration. Symptoms of defective Mercedes throttle body or throttle position sensor include:
Is the transmission throttle valve actuator mechanical or mechanical?
The Transmission Throttle Valve Actuator (TTVA) does not require any mechanical adjustments. All changes in throttle valve position are controlled by the Engine Control Module (ECM). TTVA does require an initialization period after the actuator has been removed or replaced.
How does a throttle actuator control system work?
Please try again later. This a sample technical training video on Throttle Actuator Control (TAC) Systems designed to provide an understanding of Accelerator pedal position sensors, Throttle position sensors and the Electronic control of the system, converting the raw data into throttle valve angles.
What causes the throttle possition sensor to stop working?
If you press the gas pedal to the floor or try to accelerate quickly or floor it, the engine stops responding, RPMs drop and it may even go into limp mode. Turn off the engine and restarting it usually fix the problem. In ost cases, the issue is caused by either a defective pedal position sensor or a bad throttle position sensor.
What causes the throttle body on a Mercedes to fail?
When there are throttle body malfunctions the wrong amount of air enters into the engine causing problems with air/fuel mixture ratio. Here is a close up picture of a Mercedes throttle body. Mercedes throttle bodies made by Bosch and VDO may fail. Luckily these units are repairable.
How to reset throttle possition sensor in Mercedes Benz?
First, try throttle reset procedure Turn the key to ON position. Press and hold the gas pedal for at least five seconds. Turn ignition off but do not remove the key. Remove key.