Throttle Position Sensor Adjustment Question
Thread Starter
2nd Gear
Joined: Aug 2025
Posts: 2
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Throttle Position Sensor Adjustment Question
Hi,
I found some old threads that described how to adjust the TPS with jumper wires and that is should be at .525 volts at idle. I have been playing with the TPS and have run across an odd behavior. As I started my adjustment I was at .493 volts. I slid the TPS up slowly and got to .514 volts. I continued to slide it up and the voltage started to go back down. I assumed that the voltage would continue to rise. The TPS is a potentiometer (I think) and should be one directional? Do you know if this indicates a bad sensor?
Thanks for any help!
Ryan
I found some old threads that described how to adjust the TPS with jumper wires and that is should be at .525 volts at idle. I have been playing with the TPS and have run across an odd behavior. As I started my adjustment I was at .493 volts. I slid the TPS up slowly and got to .514 volts. I continued to slide it up and the voltage started to go back down. I assumed that the voltage would continue to rise. The TPS is a potentiometer (I think) and should be one directional? Do you know if this indicates a bad sensor?
Thanks for any help!
Ryan
Melting Slicks
Joined: Aug 2011
Posts: 2,844
Likes: 176
Might do a sweep, double check grey wire for 5v ref. Then backprobe the blue wire and slowly rotate the throttle linkage. If tpi .54 for maf works. Sd .67-.76 those usually are fixed no elongated holes in the tps.
