When my car is idle I hear a cranking noise, what is this?

Answer by  Travis404607 (3916)

This is most likely either the radiator fan or a belt, such as the timing belt. Timing belts need to be replaced at least every 40,000 miles, so you may be hearing a loose belt. The radiator fan can sometimes slap against a loose piece of plastic under the hood, causing a noise also.

Answer by  MrSuperior85 (140)

There is many noises like cranking first you have to check the point of the noise whether its coming from the engine check the both sides ups n down if the noise is coming from the timing belt side its mean that you have to replace the time belt baring or cranking noise can be of any baring.

Answer by  chris40 (11)

When your car is in idle that cranking noise you hear could be your timing belt going bad and needs to be replaced.

Answer by  6ixk (1156)

Its a knocking of the valve spring, check the spring alignment any good mechanic can check the valves for you a small fee.

Answer by  jeganbanu (13)

Cranking noise usually comes from the Engine, This will happen when the Engine oil lost the lubricant and need to replace the Engine Oil.

Answer by  heather88 (1897)

It could be anything, you need to have it checked out. There could be something really seriously wrong with it.