Whirring noise!

Larryw · 22nd September 2017, 19:14

My 75 diesel is running fine, but there is an annoying whirring noise coming from under the bonnet. It increases when giving it some throttle and is there all the time except when on the motorway, when it is not really noticeable.
Any suggestions anyone?

Mickyboy · 22nd September 2017, 19:39

Might be the fuel pump, is it like a buzzing whirring noise, aftermarket pumps can be noisy
Mick

COLVERT · 22nd September 2017, 19:49

Could be one of the drive belts.

Can you hear it on tick over with the bonnet open ?

Larryw · 22nd September 2017, 21:18

Hi Colvert. You can hear it when ticking over with the bonnet up, and inside the car as well. I will get the belts looked at asap.

Larryw · 22nd September 2017, 21:24

Hi Mickyboy. It seems to be just a whirring noise. Colvert has suggested one of the belts which I will have looked at, and if that is not the cure, the fuel pump will be next! It is a very annoying noise, on tick over and when driving. Hopefully it will get sorted.

COLVERT · 23rd September 2017, 09:18

If it was the fuel pump the noise would remain at the same volume all the time as the pump works at a constant speed.

roverbarmy · 23rd September 2017, 17:04

Air con can give a whirring when the refrigerant is low. Switch to ECON and see if it disappears.

22nd September 2017, 19:14	#1
Larryw Newbie rover 75 Join Date: Jul 2016 Location: West Malling Posts: 12 Thanks: 7 Thanked 0 Times in 0 Posts	Whirring noise! My 75 diesel is running fine, but there is an annoying whirring noise coming from under the bonnet. It increases when giving it some throttle and is there all the time except when on the motorway, when it is not really noticeable. Any suggestions anyone?

22nd September 2017, 19:39	#2
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	Might be the fuel pump, is it like a buzzing whirring noise, aftermarket pumps can be noisy Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

23rd September 2017, 17:04	#7
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,053 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	Air con can give a whirring when the refrigerant is low. Switch to ECON and see if it disappears. __________________ Oil in my veins!

22nd September 2017, 19:49	#3
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Could be one of the drive belts. Can you hear it on tick over with the bonnet open ?

22nd September 2017, 21:18	#4
Larryw Newbie rover 75 Join Date: Jul 2016 Location: West Malling Posts: 12 Thanks: 7 Thanked 0 Times in 0 Posts	Hi Colvert. You can hear it when ticking over with the bonnet up, and inside the car as well. I will get the belts looked at asap.

22nd September 2017, 21:24	#5
Larryw Newbie rover 75 Join Date: Jul 2016 Location: West Malling Posts: 12 Thanks: 7 Thanked 0 Times in 0 Posts	Hi Mickyboy. It seems to be just a whirring noise. Colvert has suggested one of the belts which I will have looked at, and if that is not the cure, the fuel pump will be next! It is a very annoying noise, on tick over and when driving. Hopefully it will get sorted.

23rd September 2017, 09:18	#6
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	If it was the fuel pump the noise would remain at the same volume all the time as the pump works at a constant speed.