3rd gen prelude TPS calibration voltage isn’t letting me adjust to proper amount at closed throttle.

[mr.BA4singh]

hello honda community i really would appreciate some insight on this issue. I have a 1991 honda prelude si with a 2.1L B21A1 and manual transmission. The ecu is flashing code 7 for tps. i took the stock tps off by cutting channels into the 2 rivets. i ordered a tps from blox racing and noticed i had to swap the ground and power wires (green and yellow wires) at this point i also changed the actual connector because the wires were too short. with the new connector and TPS on it is reading 0.71v-1.00v at CLOSED throttle and 4.27v at OPEN throttle. i also noticed the voltages fluctuate very much but these numbers are the most consistent. i tested if the connector was getting a proper 5v and it was. i have no more room to turn the TPS to make the closed throttle voltage go down. i also tested two different brands of TPS and same issue. how can i fix this issue so i can properly calibrate my TPS? please and thank you any help is much appreciated. pictures are linked below  

^ tps off throttle body reads 0.71v to signal wire (middle red) when connected to connector

^ power wire gets proper voltage 5v

^ closed throttle tps hooked up to throttle body 

^ open throttle tps hooked up to throttle body

i can’t turn the tps any further because it’s reached maximum adjust distance please help 

Edited October 14, 2022 by mr.BA4singh
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