TPS potentiometer help please!!!!

  1. #1
    right basically im trying to fix my idle hunting etc.. i took my old tps off and used the volotmeter to check the readings and as you open and close the throttle the resitance dosent change so i thought that its broken

    i have brought a brand new tps

    i have tested this and again the reading dosent move and i am very confused

    do saxos potentiometer readings not change as the throttle opens/closes or have i just been veryyyyy unforunate and brought a duff one???

    please help! thankyou