When i turn on my car it makes a noise, when i press down on the clutch it goes away?

Sounds like your ac compressor clutch is saying syonara to me. Do you get a check engine light ?

If noise goes away with the clutch pedal pressed it's the throw out bearing. Anything else is going to be in the transmission

Throw out bearing is shot

That is the noise

Never heard that before on any vehicle?

What?! Really! The noise goes when the clutch pedal is depressed! So the noise goes when the release bearing (throw-out bearing) is engage? So how would that be a release bearing/clutch problem? If it didn't make a noise until the clutch pedal was depressed, it would be the release bearing! In other words its the input shaft bearing and/or counter shaft bearing in the gearbox. Stop giving people bad advice

it is the a/c bearing clutch. it needs to be replaced

If the pilot bearing was the problem it would make noise with the clutch pushed and go away when you let it out. Have you checked the fluid level in the transmission?

if it goes away when you turn the a/c on its the a/c clutch plate that is dragging and when you turn it on its pulled into the the a/c compressor and is turning all the time that's why noise goes away,you have to replace the a/c clutch.sometimes you can try prying with a screwdriver the edge that is dragging and noise will go away.

needs a throughout bearing. it is what presses the clutch in. thats why it goes away when you depress the penal. but it has to be removed with the clutch so while in there the clutch should be done. hopefully this helps you. good luck and please ask ant more question you have

Just change the compressor it is easier than changing the clutch if you do dont forget to change the reciever dryer and the orfice tube and have a evacuation done on it.

When the car is sitting idling,and the clutch is not depressed,it makes a grinding noise because the input shaft of the transmission is being forced to turn by the clutch,which is engaged,and even though the trans is in neutral,the input shaft is still turning,and this is called "neutral roll over" noise,and some of the assemblies inside the trans are freewheeling around.The noise goes away when the clutch pedal is being depressed down,because the input shaft of the transmission is no longer turning.So it does sound like an internal transmission problem.It is still possible for the throwout bearing to be bad,and it can be checked when the trans is removed from the vehicle,Remove the throwout bearing from the trans input sleeve,and press down on the bearing flange and turn it at the same time.It should feel smooth and free.If it catches or feels gravelly,then the bearing is bad and that could be your noise.Also,turn the input shaft of the trans and same thing,if it's smooth and free or if gravelly feeling......Good luck.