Fuel pump buzz keeps running on my sd4 auto when ignition on . Is this normal

Last edited by sunnybryn69 on 15th Apr 2019 10:05 pm. Edited 1 time in total

That's not your fuel pump, it's your throttle body making that sound.

so is this normal with ignition on then . as it dont stop .

Last edited by sunnybryn69 on 15th Apr 2019 10:05 pm. Edited 1 time in total

Afraid not. Time for a new one!

Did you have problems with your Haldex pump earlier.

http://www.freel2.com/forum/topic33153.html

Did you solve it, your noise is in the same area? FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 77k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

So if I disconnect the electrical plug to the throttle body noise should stop .then check noise to confirm throttle body fault .that right ?

Right.

But...

Could be at the Haldex, like IanMetro said, but... (Second but, indeed )
Haldex pump is energized only from time to time, not continuously like you said the sound is.

So...

You may have a really noisy in-tank pump...
You could try to take out fuse no. 22 at passenger feet (fuel pump fuse) and see if you could still hear it.


.

Ok I will try removing fuse 22 in morning and let you all know 👍

ok update
so its not from the rear of car pulled fuse for haldex and fuel pump and noise still there .but ive found it yes the throttle body makes noise but thats fine

but this is the main noise coming from front of the automatic gearbox plastic black cover sounds like a pump running all the time with ignition on