Alright, here's my story. And I've searched a good bit.

Got into EvoScan today and noticed that at idle or even with the car off and no pressure on the gas pedal...the throttle position was at 14%. So I get home and loosen the screws on the throttle position sensor and move the sensor until I got a value of 4%. Now, no matter how much I play with the sensor or the throttle cable itself, I can't get a 0% at idle/no pressure. When I push the throttle to the floor, I only register 95% throttle.

Any ideas? Do I need to clean the thing somehow. I read in EvoScan under the "Throttle Position Sensor" section that:

"Displays state of the throttle. High voltage or % value means a more open throttle. When logging engine activity (especially on the dyno), it is useful to log throttle position. This makes it easy to see when a power run begins and ends i.e. when the driver's foot is depressing the accelerator fully. Some mitsubishis show up to 20% when your foot is off the accelerator, and will show a max of 90-99% when your foot is fully applied, this is normal."

So...my question is, am I ok with the current values? Or do I need to make sure I can register 100% throttle position when at WOT. Will this cause problems on the car in calculating load and it's AFR's? I am going to be tuning soon and want the car to be operating properly beforehand.

 

i know that mine reads like 11.xx% at idle and iv been told that was perfectly normal i just made so i get 100% at WOT while still being the lowest % at idle

 

+1. Adj it so it reads 100% at wot. Idle wont read 0%

 

I have never tested myn at idol, but i got some weird number like 38% while under full boost last time i was tuning :/

 

Thanks guys. Guess I just had my target logic backwards. I was aiming for 0% at idle rather than the 100% at WOT. I'll adjust it properly!

 

Yeah, you will never get it to read perfectly 0 to 100%, it is after all a piece of carbon. So, set it to 100% and check for any dead spots. Dead spots require replacement.

 

Just wondering but I have mines set to 12.9% right now at idle, I was wondering how people are checking their tps sensors for dead spots?

 

I've never had reason to touch the one on my Evo, but if it is like the ones on other vehicles I have worked on, you mark its position, pull it, connect a VOM set to ohms and rotate it through its range of motion watching for a steady increase or decrease in resistance. If resistance suddenly goes to infinity, you have found a dead spot.

 

ahh alright I'll give that a shot. Thanks a ton.