Stalling, Part ...........
 

Hello
Sorry to bring this topic up again as I see that it has been posted many times befor already. My stalling question is much like that of Donald with the 300ce only mine does it at no set times and only does it when I am coming to a stop. Has happened two times in the past month and prior to that one in april. When it does stall all I have to do its put it in neutral and it starts back up fine and runs normal. I have heard something about a "Hall effect sensor" of some sort. Does anyone have any idea what that part is? It could be the same thing as Don's problem but he noted that it stalls a few times afterwards and mine does not nor does it seem afftected by temp. Thank you greatly for any input.

Brett

What car?
If it has CIS injection, I have repaired a great deal of them with replacement of the air flow sensor.

Hall Effect Sensor? TMK, that is a part in an Express (one touch) up/down window that senses when the window is at the end of it's travel!
You should try the OVP...!
WHAT MODEL CAR??

A hall effect sensor is generally used to indicate an event occuring with some frequency such as camshaft, crankshaft, or distributor position. It produces a square wave output corresponding to a magnitic field passing in close proxsimity to the armature of the sensor. It could also be used to detect wheel speed but more than likely, wheel sensors (like those for ABS) will be a variable reluctance sensor. This sensor would be pointing to a toothed wheel and generate a sine wave whose frequency corresponds to the rotation speed of the wheel. I believe that my 190E has one pointed at the teeth of the flywheel. If a wheel has a tooth missing, the waveform could also indicate a particular event such as top dead center.

If a hall effect was not working, the engine wouldn't stall at just idle. I would look at the air flow meter. I don't know if your car uses a vane or a hot wire to sense air flow, but if isn't working, the engine controller will give the engine the wrong amount of fuel and possibly stall the engine.

I had one car with a vane meter that would get oil in it and stick(from the turbo I guess) and not open correctly at idle. I would spray the vane with carb cleaner and it would be ok again.

Thank you for the input and sorry about the confusion. I forgot to state: 300E 1988 114,712 miles. Thanks again