05-01-2010, 08:27 PM
I am JD & It's my dream
WF Lifetime Member
WF Supporting Member
Join Date: Jan 2009
Location: The Peach State
There are a few different TPS design types: switch, potentiometer and combination. The switch type, not surprisingly referred to as the throttle position switch, cycles on and off through its range. It is usually "on" (has electrical continuity) at throttle close, or idle. Just above idle it is "off" (loses continuity), and stays that way until wide open throttle is reached, where it is then "on" again. While operating in the middle area, where the switch is off, other sensor inputs provide the computer with the data it needs to maintain smooth throttle response and good driveability. This type of sensor is usually adjustable.
The potentiometer type of TPS is a variable resistor, effectively supplying a gradually increasing supply of voltage to the computer as the throttle is gradually opened. Usually the voltage operating range is from about one-half a volt at idle, to five volts at wide-open throttle. These sensors are usually not adjustable.
The kind of woman that when my feet hit the floor each morning the devil says "Oh Crap, She's up!"
To All Of Our Forum Veterans and Active Service Members.
Our Debt To You Is Greater Than We Could Ever Repay.
Become a Supporting Member!