whirring noise diesel

garybarker609 · 15th September 2014, 21:56

Hi everyone im new to this got a 75 connoisseur se cdti 2 weeks ago seems a good car just a bit concerned about a whirring noise from engine anyone any ideas also worried about about speed bumps car seems to really clunk when going over them might have suspension problems

First_damned · 15th September 2014, 22:21

Whirring noise could be air con is on, the compressor or fan. Clunk could it be drop links, broken spring, engine undertray catching speed bumps ( mine sometimes does this )

Dragrad · 15th September 2014, 22:31

Do you have a FBH ? Been a bit chilly mornings and evenings of late....

garybarker609 · 16th September 2014, 07:57

Thanks guys whirring noise seems to be when I take foot off accelerator pedal will try without aircon on clunking over speed bumps sounds like engine under tray it didn't happen with my old rover 416 I would have thought my 75 would be a smoother ride

klarzy · 16th September 2014, 08:04

is usually drop links, DL bushes or wishbone rear bush.
Whirring could be anything connected to the belts, bottom pulley, idler pulley, air con pump (mine does this and goes quite when I switch to econ), water pump, power steering pump....

if it is as you take your foot off of the pedal I would look at the idler (Tension) pulley, this is the cheapest bit to replace and they do wear..

Grab the bottom of your drop links and force up and down to check for play...
Then see if the wishbone bushes are worn by trying to roll the front wheels forward by hand when the car is parked, if it bumps then the bushes have had it.

STUBIE · 16th September 2014, 10:01

Is your car a facelift diesel? If so the noise you hear could be the high pressure pump overrun issue. Had it myself on a facelift tourer and wasted 100 quid on a new regulator which didn't cure the problem.

Stubs

Vossy · 16th September 2014, 12:13

Mine was making a sort of whirring noise as well, tracked it down to the aircon belt, it was horribly cracked, a quality new one sorted the problem.

Abbadon · 16th September 2014, 13:03

what about slave cylinder/throwout bearing? I thought this made that kind of noise - its what I think my car is doing...

although I do know the aircon belt is not in good condition either - however since my aircon doesnt work and compressor wont turn on its low on my list of priorities...

maxi_crawf · 16th September 2014, 15:27

Where roughly is the noise coming from? try it in A/C econ mode see if there is a difference, clutch pedal up/down, left/right/front or back of engine bay, any funny smell?

garybarker609 · 16th September 2014, 21:53

Only makes noise when driving and aircon doesn't make any difference whether it's econ mode or if it's switched off definitely doesn't make noise when accelerating

15th September 2014, 21:56	#1
garybarker609 Newbie rover 75 Join Date: Aug 2014 Location: leeds Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	whirring noise diesel Hi everyone im new to this got a 75 connoisseur se cdti 2 weeks ago seems a good car just a bit concerned about a whirring noise from engine anyone any ideas also worried about about speed bumps car seems to really clunk when going over them might have suspension problems

15th September 2014, 22:31	#3
Dragrad This is my second home *None DROWNED** Join Date: Aug 2007 Location: Cardigan Posts: 33,339 Thanks: 1,257 Thanked 1,664 Times in 1,081 Posts	Do you have a FBH ? Been a bit chilly mornings and evenings of late.... __________________ Andrew Ich Dien Problem solving is... lateral thinking SEARCH FIRST ...ASK LATER...

16th September 2014, 08:04	#5
klarzy This is my second home none but not gone Join Date: Mar 2013 Location: March, Cambs Posts: 16,437 Thanks: 894 Thanked 4,247 Times in 3,025 Posts	is usually drop links, DL bushes or wishbone rear bush. Whirring could be anything connected to the belts, bottom pulley, idler pulley, air con pump (mine does this and goes quite when I switch to econ), water pump, power steering pump.... if it is as you take your foot off of the pedal I would look at the idler (Tension) pulley, this is the cheapest bit to replace and they do wear.. Grab the bottom of your drop links and force up and down to check for play... Then see if the wishbone bushes are worn by trying to roll the front wheels forward by hand when the car is parked, if it bumps then the bushes have had it. __________________ [SIGPIC][/SIGPIC]….All praise Bananaswan….

16th September 2014, 10:01	#6
STUBIE This is my second home Back in a Rover Join Date: Nov 2006 Location: Peterborough Posts: 4,926 Thanks: 131 Thanked 357 Times in 261 Posts	Is your car a facelift diesel? If so the noise you hear could be the high pressure pump overrun issue. Had it myself on a facelift tourer and wasted 100 quid on a new regulator which didn't cure the problem. Stubs Last edited by STUBIE; 16th September 2014 at 12:41..

16th September 2014, 21:53	#10
garybarker609 Newbie rover 75 Join Date: Aug 2014 Location: leeds Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	still making noise Only makes noise when driving and aircon doesn't make any difference whether it's econ mode or if it's switched off definitely doesn't make noise when accelerating

15th September 2014, 22:21	#2
First_damned Posted a thing or two Rover 75 Connoisseur CDTi Join Date: Aug 2013 Location: Birmingham Posts: 1,272 Thanks: 267 Thanked 100 Times in 93 Posts	Whirring noise could be air con is on, the compressor or fan. Clunk could it be drop links, broken spring, engine undertray catching speed bumps ( mine sometimes does this )

16th September 2014, 07:57	#4
garybarker609 Newbie rover 75 Join Date: Aug 2014 Location: leeds Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks guys whirring noise seems to be when I take foot off accelerator pedal will try without aircon on clunking over speed bumps sounds like engine under tray it didn't happen with my old rover 416 I would have thought my 75 would be a smoother ride

16th September 2014, 12:13	#7
Vossy Why? ... MG ZT+ Cdti Auto saloon. Join Date: Jul 2014 Location: Blockeswich, South Staffs Posts: 1,555 Thanks: 173 Thanked 483 Times in 330 Posts	Mine was making a sort of whirring noise as well, tracked it down to the aircon belt, it was horribly cracked, a quality new one sorted the problem.

16th September 2014, 13:03	#8
Abbadon Avid contributor MG ZT+ Join Date: Jul 2014 Location: Swansea Posts: 247 Thanks: 100 Thanked 18 Times in 16 Posts	what about slave cylinder/throwout bearing? I thought this made that kind of noise - its what I think my car is doing... although I do know the aircon belt is not in good condition either - however since my aircon doesnt work and compressor wont turn on its low on my list of priorities...

16th September 2014, 15:27	#9
maxi_crawf Posted a thing or two R75 Saloon Conn CDT SE, MG ZT190+ Join Date: Nov 2006 Location: Kingston-upon-Hull Posts: 1,960 Thanks: 823 Thanked 426 Times in 274 Posts	Where roughly is the noise coming from? try it in A/C econ mode see if there is a difference, clutch pedal up/down, left/right/front or back of engine bay, any funny smell?