how to check & set your TPS voltage on a single bore throttle body.

[clonetek]

first off, a big thank you goes to BABOLT for helping me out with this.. even though it wasn't one of his throttle bodys, he told me what i needed to do.

tools needed:
8mm socket & ratchet (to adjust idle set screw)
phillips screw driver (to loosen TPS screws)
multimeter (to measure TPS voltage)
pins (to stick thru the insulation on the wires to the TPS) - optional

how to check your TPS voltage:

turn key on, but dont crank engine
put positive lead of multimeter on grey w/ white stripe wire (middle wire)
put negative lead of multimeter on grey w/ red stripe (bottom wire)
i used straight pins to poke thru the insulation.

you should get under .99 volts.. anything over, and you'll need to adjust it.

make sure you have your idle set where you want it by moving this set screw:

tighten- increase idle
loosen- decrease idle

loosen the TPS screws slightly:

turn the TPS clockwise to raise the voltage.
turn the TPS counter clockwise to lower the voltage.

move the TPS slightly, and check with the multimeter.. when you get it to where you want it, tighten it back down.

my voltage was 1.01 before, and .983 after.

 

[Bulldog]

and? what the hell does all that mean?

 

[clonetek]

if you have a aftermarket throttle body, you should check the TPS voltage to see if it is under .99volts
if it is over .99volts, follow my instructions.

thank you, drive thru..

 

[Rippin_01]

yeah i think i need some more i get the point and how to do it but need a technical writer to help me understand it

 

[Bulldog]

so what diff does this make? please?

 

[clonetek]

bulldog: i was having a surging problem after i put the SBTB on.
this seems to have fixed it.

JJ: i dont like to poke holes in the insulation either, but i couldnt get to the inside of the connector from the back.. plus, i used pins, which are a lot better than the multimeter probes.
i guess i left out the part where i put silicon on the wires to protect them after removing the pins.

Rippin_01: huh?

 

[Bulldog]

try adjusting the flux capacitor...but dont poke holes in the insulation...hehehe

 

[Bulldog]

holy verbal bull$hit batman, i've been out bedazzled!

 

[Wolfeie]

Can I go too low? Is there an optimal range?
Adjusted to 0.79V Not test driven

Thanks, guys!
(Actually on a '93, Gen I)