if u have a hunt in your idle u will need to first check the manifold for leaks turn the car on then get your hand over the throttle body if the engine wants to pull ur hand through the throttle body then there is no leaks but if your engine still runs and you can hear a whistle then you have yourself a vacume leak also another thing to check there is a little hole inside the throttle body itself cover that with your finger if your car stops hunting its the cold start water thing fix it by plugging that hole up also do not touch your tps there is no need unless some1 has changed it before
hope this helps has in the past for me many times