ok so my car had a fluctuating idle and i found out it was my tps. so i replaced it. i adjusted it up to the specs and all that but still have a high idle. now my speed sensor is completely out of wack. at idle it says im going like 90km/h and changes when my idle does. my idle usually stays at about 1800rpm. so i unplugged my speed sensor and started it up. 750rpm idle. how does the speed sensor affect your idle?