How does a tps work?

XRpredator

AssClown SuperPowers
Damn Yankees
Aug 2, 2000
13,511
19
hot125mod said:
. . . please explain to me how a tps works . . .
TPS is a throttle position sensor. It senses the position of the throttle.
 

Matt Fisher

Member
Apr 17, 2002
136
0
It's a rheostat, much like the rotary dimmer switch on your chandelier.

Voltage flows into the TPS. Then depending on how much you're twisting the throttle will dictate how much voltage flows out of the TPS. In most cases, more throttle will mean more voltage coming out.

This reading is used to decide what ignition map to use, how much to open the power valve on CR's with the RC valve, and on FI vehicles, is also used in which fuel map gets used.
 

hot125mod

Member
Jan 14, 2007
501
0
is it a safety sensor or will it kill the motor if needed. i thought it might stop the spark if the motor is reved out to long. what i am asking is what does is it do when sensing the throttle position?
 

hot125mod

Member
Jan 14, 2007
501
0
im sorry matt you posted before i was done typing. i wouldnt have said that if i had saw what you said thank you that makes perfct sense to me.
 

bclapham

Lifetime Sponsor
Nov 5, 2001
4,340
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on modern carbs, the TPS operates a powerjet- it comes in from approx 1/4 to 3/4 thottle- it switches off at 3/4 so the enigne can lean out nicely and get some topend power and overrev
 

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