So I was using my friends OBD2 reader (FuzzyCar and Wifi Kiwi) and I was checking all the sensors on my new to me 1997 Honda Accord Wagon EX.

The TPS screen shows 8% at idle and 89% at WOT.

I know for a fact its no the pedal as I checked directly at the TB.

There are no codes on the ECU so I'm assuming its within tolerance, my question is; is this a problem? The car has been running great and I have no issues so should I let this lay or attempt further diagnosis.

It is a pain to get to the TPS and probe the wires (being basically lazy).

It also might be an issue with the software I use as well (take that into consideration).

Thanks tech peeps!

 

I think I have already answered my question; after about 30 minutes of searching before I made this post, obviously murphy's law would state that I would find the answer.

Concur if you could!

https://honda-tech.com/forums/acura-integra-6/how-check-your-tps-sensor-obd2-teg-2426475/

 

Basically I'm just using the photos as a reference.. seems OBD2 doesn't ever go to 100% but the voltages line up.

 

You will never see 0% or 100% throttle. Although there is a range of 0-5V on the TPS, you will see ~.5-4.5V when back probing the TPS.
0%/0V means the throttle is completely closed, this cannot happen as the engine would then not be able to pump air and would stall.
100%/5V would mean the throttle body does not have a throttle blade or shaft impeding any air flow giving 100% airflow, this too cannot happen as a throttle blade is used to regulate air flow.
Although the term 'closed throttle' and 'Wide Open Throttle' are used its does not mean 0% and 100%. You will see ~10% and ~90%.

The TPS sensor sends a voltage reference to the computer which it can understand. It knows ~.5V= no throttle input/idle and ~4.5V= maximum possible throttle/WOT.

Looking at the link, it looks like racebum skinned the wire to test it. DO NOT DO THAT. You can stick the voltmeters prob into where the wire enters the connector attached to the TPS, this will give you the same results without damaging the wire harness or leaving it susceptible to corrosion.