Okay heres the deal. I been going threw a ton of throttle position sensors latley and recently I had another code that came up code 21. I have a 58mm Holley throttle body. I heard that you have to slot the tps to adjust the correct voltage. I have a lt1 scanmaster so I can read the voltage of that. Where should the correct voltage be at idle??

 

.20-.90V@ idle... no more than 4.9V at wot...Did a search for you.

 

cool thanks buddy - Mike