What could be more distressing than noises when you start your vehicle… Indeed, you probably already came across noises when you start your Audi S4 and usually it’s frustrating. It may not be anything serious, but each new engine starts usually becomes a scary moment during which you don’t know if your engine will start. That is why our editorial staff has made the decision to prepare this document to support you find its source. To do this, first, we will see the case of noise when starting on Audi S4 but the vehicle does not start, and finally, the noise you can encounter on your vehicle if it starts, first cold and then hot.
I listen to a noise when I try to start my Audi S4, but the engine doesn’t start
I find a clicking noise at the start of my Audi S4
If you listen to a noise when you want to start your vehicle, and it does not want to turn on, it is most likely that it is the battery that is contributing to the trouble. Indeed, if you hear clicking noise when you start your Audi S4, and it sounds like a ticking, you probably lack the energy to run your starter, test out your battery with a voltmeter and replace it if necessary. In the event that after examining your battery, you still know a noise when starting your Audi S4 and it does not want to start, refer to this content page about starter motor noises on Audi S4 for more information and to find the source of your trouble.
I perceive a noise when I start my Audi S4 but the engine it starts
I listen to a noise when I start my Audi S4
- Grinding or squealing type noises when I start cold Audi S4 :
If you listen to a noise when you start your Audi S4, and this noise sounds like grinding or squealing noise, which can also be relating to vibrations, it is conceivable that it is the combustion of your vehicle that is involved. Indeed if you have an air/fuel mixture that is not good the normal operation of the engine will be altered. Check the condition of your injectors and air intake system. For more information on the origin of injection-related noises on Audi S4, check out this article. - Cold start friction parts Audi S4 :
If you discern cold friction noises on Audi S4, it is pretty much sure that they come from one of your belts. Either the serpentine belt starts to wear out and therefore causes a friction noise. It is also conceivable that the tensioner roller or damper pulley is worn out and that as a result the extension belt make a friction noise, often when cold. Visually check your belt and replace it if necessary. If you have other friction noises, and it doesn’t result from your serpentine belt, we have a full content page on engine of your Audi S4.
I listen to a noise when starting my Audi S4 even when hot
- rubber mount / silent bloc dead motor
If you listen to a clacking noise when you start your car’s engine and it is more than 100,000 km long, it is conceivable that some of your engine silentblocks or rubber mounts are dead. And the huge vibrations made by starting the engine can produce starting noise on Audi S4. Check their condition and change them if necessary. Consult this content page if you would like to have detailed information on rubber mount noises on Audi S4. - Motor flywheel
Finally, if you experience a noise that sounds a little like a crank noise when you start your Audi S4, even when hot, it is conceivable that if your series is equipped with a dual-mass flywheel, it is the source of your concerns. Indeed, these parts have created a lot of concerns on many cars. When they take part in the game they make noise when you start your Audi S4 and when you turn off the engine. Have his condition checked out by a professional.
