Quote:
Originally Posted by davidmbell
My car has been in the local dealership for the past day and half due to an Engine Warning Light coming on - on the DAY I BOUGHT IT!!!!
Anyway, turns out its an o2 sensor that they've replaced. While they had it they also replaced a dented tweeter grille, a missing rubber gasket from the top of the drivers' side headlamp and also tried to sort the incredibly annoying squeeky roof.
Anyway, upon collection this afternoon I noticed a whine that wasn't there before : ( I carried on driving rather than taking it straight back just in case it was me, and the noise had always been there, but no, its definately a new noise.
So I called the dealer and they're taking it back in tomorrow. : (
I'm thinking its the LPFP in the tank. But why would it suddenly start making a noise? Surely chaging the o2 sensor in the exhaust couldn't cause this??
I've tried to do a recording of the whine and uploaded it here (.mov)
For those that have also had this issue, does this whine sound like your whine?
It sounds as if its coming from behind the drivers' seat (RHD car) or near the rear wheel...
Anyway, fingers crossed the dealer hear it and sort it.
David |
They likely did a software update.
It appears based on bits of information here and there that one of the issues BMW has been dealing with on the fuel pump front is fuel pressure and in-tank fuel level sensors. Both of these could affect the low pressure fuel pump (LPFP) performance, which I believe in combination with low fuel levels and split fuel tank design, has a potentially detrimental affect affect on the n54 HPFP longevity.
Some folks got fed up with the sound, took their car in for a LPFP replacement but the dealer did a software update. That didn't quite the pump so in the end the dealer had to replace the pump.
Yours may or may not be bad, but it depends on how loud and annoying the sound is. If it's bothers you, don't hesitate to take it in for a replacement.