General Category > Engine related issues

Throttle Positioning Sensor reset.

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Jughead:

--- Quote from: WayneC on February 21, 2016, 02:00:26 AM ---I think you will find the TPS constantly recalibrates and the twist throttle 3 times applied to very old models

--- End quote ---
Correct.  TPS is reset each time you cycle the ignition.

magwych:

--- Quote from: dihoward on February 21, 2016, 05:13:02 PM ---Please elaborate on the idle bypass adaptation. What is the function?

--- End quote ---
The idle bypass controllers  Are the electrical  devices on your throttle  bodies on the top side nearer the engine. They have some form of sensor built-in  to indicate their exact positioning. The ECU says "go to position X" so they need to know where zero is, and when they are exactly  at position X. Sometimes  they lose track of zero and so where they are. Resetting  their adaptation is a function on the gs911 that sends the controllers through a few routines to relearn their zero positions and their full range.

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magwych:
The stalling  could also be caused by a failing lambda sensor.
I have found that a failing sensor may not throw an actual fault. The real-time output values may  be constantly  on the rich or weak side of stoic as the sensor is starting to fail. It can take long time before it actually stops working.

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