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View Full Version : S13 Problem Diagnosis TPS?


SoguRacing
04-11-2008, 09:56 PM
Ok, so my car has the worst idle, sometimes stalls, bad mileage, and every now and then while i drive and i'm cruising around 50mph, my throttle percent on my AVCR reads 0%. now how can that be? I've been reading up online..various forums and such about TPS's and problem diagnosing and bad TPS symptoms. Mine are "all of the above". Now, I just did a voltage check,

3Wire TPS. REDTOP sr20det
step 1
Key On engine Off

step 2
back probed the middle TPS wire with the positive lead to my DVOM

step3
back probed the top wire with the negative lead to my DVOM

step 4
checked voltage at Closed Throttle and got .35Volts

step 5
checked voltage at Wide Open Throttle and got 3.99Volts
*Double checked both voltages to make sure*

step 6
did a voltage sweep and everything looked fine. Nice bell shaped curve.

Also, the supplied voltage to the TPS is 5.13 volts.

Ok, now my question is..What are the correct voltages supposed to be for Closed throttle and Wide Open Throttle as well as any other voltages? thanks.

SoguRacing
04-14-2008, 01:19 AM
anybody? i can't even find it in the FSM downloaded at HeavyThrottle. voltages?

Signum Temporis
04-14-2008, 01:35 AM
did u search in the FAQ?

Anto
04-14-2008, 01:53 AM
those are the correct voltages

I think your problem lies elsewhere

SoguRacing
04-14-2008, 02:17 AM
even my power fc says something is wrong with it. the back is lit up on the tps reading. have no clue where else to look.