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Re: Add a resistor to TPS circuit?

On Fri, 28 Jan 2005 11:33:21 -0500, you wrote:

>I'm a newbie, but...
>The surging seems to be associated with small throttle openings (but not
>idle... I'm not sure what "idle surging" would feel like) and closed-loop
>operation with the O2 sensor contributing its 2 cents worth.
>One fix is to twist the TPS, thereby fooling the ECU into thinking the
>butterfly is more open than it really is (and thus fooling the ECU into
>spritzing more gas into the mix). But that's a pretty blunt instrument and
>enrichens the mix all through the range.
>Folks at ease the basic math and a soldering iron, might suggest that adding
>a resistor in the circuit with the TPS potentiometer could influence the
>small-opening voltage but have rather less effect on the larger openings.
>Anybody tried that? Anybody know the resistance value of the TPS pot?

I'm not sure why you would want to do this.  The ECU uses a bunch of
variables in determining when and how much to squirt and TPS is only

Wayne Woodruff