TPS failures - better designs?

[David Cooley]

I don't see how a hall effect device could be used as a TPS.  It senses the 
presence or absence of a magnetic field...  If it was to count pulses as 
the throttle shaft was rotated to determine position, that may work, until 
someone started the vehicle with their foot on the accelerator so it 
thought it was at zero when it was at 50%...


At 01:19 PM 12/2/1999 +1100, you wrote:
>Dear EFI gurus,
>
>I was at the wreckers (bone yard?) yesterday. Seems
>that the Throttle Position Sensor is a common point
>of failure. Being a novice when it comes to GM EFI
>hardware, I figured that a better design than a simple
>pot (potentiometer, or "variable resistor") was in
>order. Having recently played with a Hall Effect sensor,
>for ignition pickup, I also figured that a simple TPS,
>both reliable and robust, could be done cheaply and
>easily with just such a Hall Effect device.
>
>As we all know, "there's nothing new under the sun"...
>So, here's the EFI content:
>
>   Are there any Hall effect TPS sensors around?
>
>Or, perhaps a better question is:
>
>   Are there more reliable TP sensors than simple pots?
>
>TIA,
>--
>Peter Gargano

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