evo_gerard Posted July 10, 2022 Report Share Posted July 10, 2022 Good day everyone. I'm have a little issue with calibrating a TPS. But first let me give a little back story. the car is a A174 lancer (rwd) and it has a DOHC 4g63T engine installed (RVR engine). previously it was running a factory evo 3 ecu. We decided to replace the ecu with a evo3link g4x ecu and redo the engine harness. so the issue is, I'm performing the TPS calibration and its successful ie I'm getting 0% at closed throttle and 100% at wide open throttle. My issue is with in 0% and 100% i'm getting no movement in tps reading even thought I'm pressing the throttle gradually. it stays 0% for a while and then jumps to 100%. by this time the throttle isn't physically open past 50% yet. it stays 100% till i'm actually wide open. when I try closing the throttle from wide open it reads 100% even thou it past 50% physically. and drops from 100% to 0% as i almost reach fully closed? Ive tried 3 different TPS and had the same result. I've checked the wiring also to double check that everything is correct. Could anyone point me in a direction which would help me solve this issue? Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 11, 2022 Report Share Posted July 11, 2022 Sounds like there is little to no voltage change reaching the analog input pin. Most likely a wiring issue. Hit F12 to open the runtimes screen and go to the analog tab, you can see the raw voltage there. I would expect to see at least say 3V change from open to closed. Quote Link to comment Share on other sites More sharing options...
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