E90 diferencial ruidoso
Discussion
Buenas amigos tengo un problema, tengo un BMW 318i 2008 automático para el cual hace unos meses empezó a sonar el diferencial trasero, hice pruebas con el mecánico ya que el sonido es muy molesto y suena tanto en baja como en altas velocidades, cuando desacelera cambia el sonido sin embargo si pongo el carro en neutro el sonido se quita, mi consulta es : me han sugerido utilizar un aditivo para el diferencial ya que le hice el cambio de aceite y el sonido continúa si fuese el caso existe alguno que me recomienden y sino me gustaría saber si es mejor cambiar el diferencial, tengo entendido que es de relación 3.38 sin embargo no estoy seguro, agradezco sus sugerencias
Hello friends, I have a problem, I have a 2008 BMW 318i automatic for which a few months ago the rear differential began to make a noise, I did tests with the mechanic since the sound is very annoying and it sounds both at low and high speeds, when I decelerate the sound changes however if I put the car in neutral the sound goes away, my question is: they have suggested I use an additive for the differential since I did the oil change and the sound continues, if that is the case is there one that you recommend and if not I would like to know if it is better to change the differential, I understand that it has a 3.38 ratio however I am not sure, I appreciate your suggestions
Super Sonic said:
Por favour, en Ingles.
In English please.
Hello friends, I have a problem, I have a 2008 BMW 318i automatic for which a few months ago the rear differential began to make a noise, I did tests with the mechanic since the sound is very annoying and it sounds both at low and high speeds, when I decelerate the sound changes however if I put the car in neutral the sound goes away, my question is: they have suggested I use an additive for the differential since I did the oil change and the sound continues, if that is the case is there one that you recommend and if not I would like to know if it is better to change the differential, I understand that it has a 3.38 ratio however I am not sure, I appreciate your suggestionsIn English please.
oldaudi said:
Hello friends, I have a problem, I have a 2008 BMW 318i automatic for which a few months ago the rear differential began to make a noise, I did tests with the mechanic since the sound is very annoying and it sounds both at low and high speeds, when I decelerate the sound changes however if I put the car in neutral the sound goes away, my question is: they have suggested I use an additive for the differential since I did the oil change and the sound continues, if that is the case is there one that you recommend and if not I would like to know if it is better to change the differential, I understand that it has a 3.38 ratio however I am not sure, I appreciate your suggestions
The differential pinion bearings are knackered and no oil or additive will help. It's a common fault.The diff ratio is 3.9:1 and the differential part numbers are 33107524325 and 7524326. A 2008 car will probably have auto stop start so you can only fit another 3.91. If you fit a different ratio the car will have reduced performance and the DSC/DTC/ABS lights on.
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