Weird Whining Noise

daznkel · 6th December 2015, 22:36

Before anyone comments this is not the usual facelift fuel delivery, overrun whining noise!

I noticed it earlier in the week, as I do a significant no of miles each week, you notice when anything sounds remotely different, almost instantly. My initial thoughts were that the Air con pump was shot and whining due to little or no lubrication. However, I have been out today, between the downpours to try and determine what is causing the noise.

I have found that the noise appears when the clutch pedal is de-pressed, not fully, but VERY partially and continues, regardless of clutch pedal position.

When I say, not fully, I mean with your foot resting on the pedal, barely moving it at all!

Once the noise is there, when you rev then engine, the noise increases in frequency, along with the engine revs. Remove your foot from the pedal entirely, no noise.

The car has had the whole system replaced about 18k miles ago and the clutch and its associated hydraulics, are still strong with no leaks. I am not concerned at all about the clutch operation, as it is sound. Just this whine!

It is almost like, once your foot is on the pedal, there is some kind of resonance set up. Could it be the copper pipe from the MK1 Tazu fitted, vibrating through the bulkhead, or resonating along it's length.

A clip of the audio I captured earlier, HERE. You may need headphones to accurately hear the whine.

Just to repeat myself, this is not the usual facelift fuel delivery noise, as heard the first time I rev the car up.

Any help, much appreciated, as usual!

muggerbee · 7th December 2015, 00:02

just guessing from the noise, but without the clutch aspect i'd have said alternator bearings, if it's clutch dependent then the only thing I can think of would be the thrust bearing

Jules · 7th December 2015, 00:12

Thrust bearing.
What brand of parts were used?

daznkel · 7th December 2015, 06:51

Quote:

Originally Posted by Jules

Thrust bearing.
What brand of parts were used?

Thanks Jules. The clutch plate itself and the pressure plate we not changed as it was not contaminated. The slave cylinder was a genuine LUK one. The master cylinder is a Tazu mk1.

Heddy · 7th December 2015, 08:15

Have to go with slave cylinder here. Mine went, after reading a LuK was fitted 12 mths before I bought the car. It had lasted 18mths. After posting pics of it after removal it appeared it wasn't a LuK after all.

daznkel · 7th December 2015, 08:25

When I bought the car on 126k it had its slave replaced. About 6 months later it failed again due to cheap parts fitted. I then purchased the LUK slave myself after finding where to source a genuine one from Andy Willi.
Myself and a mechanic mate fitted it and all was good for 300 miles or so, then the master went and was replaced with a mk1 Tazu.
All has been great since and the clutch still appears to be strong even now. Just this noise.

steve1975 · 7th December 2015, 08:26

when i read your title it made me think of swmbo hahaha

Heddy · 7th December 2015, 08:32

This was removed when mine failed, Andi Willi identified it as a Lucas I think, in an ECP box. It deffo wasn't a LuK.
http://www.the75andztclub.co.uk/foru...91&postcount=2

e30325itourer · 12th December 2015, 16:50

any update on this my ztt is exactly the same?

Jules · 12th December 2015, 20:25

We've had numerous LUK slaves fail just after a year or less than 15k miles !!
LUK will try and wriggle out of ANY warranty claim.
Whereas WE honour a 12 month/12,000 mile warranty leaving us well out of pocket.
It's another case of large companies winning over the end user or small family business.
Personally I think the whole affair stinks.

We have not won ONE case against LUK
Another company on our Blacklist I'm afraid to say.

So now we've moved on to the metal slave.
Qty 9 fitted in last 12 months and no failures yet.
One is fitted to a local Taxi CDTi and now covered 37k miles so looking good so far

6th December 2015, 22:36	#1
daznkel Posted a thing or two 04 MG ZT+ 190 XPG & 99 (T) Dealer Launch 75 V6 Connie Auto Join Date: Oct 2012 Location: Plymouth Posts: 1,080 Thanks: 615 Thanked 456 Times in 309 Posts	Weird Whining Noise Before anyone comments this is not the usual facelift fuel delivery, overrun whining noise! I noticed it earlier in the week, as I do a significant no of miles each week, you notice when anything sounds remotely different, almost instantly. My initial thoughts were that the Air con pump was shot and whining due to little or no lubrication. However, I have been out today, between the downpours to try and determine what is causing the noise. I have found that the noise appears when the clutch pedal is de-pressed, not fully, but VERY partially and continues, regardless of clutch pedal position. When I say, not fully, I mean with your foot resting on the pedal, barely moving it at all! Once the noise is there, when you rev then engine, the noise increases in frequency, along with the engine revs. Remove your foot from the pedal entirely, no noise. The car has had the whole system replaced about 18k miles ago and the clutch and its associated hydraulics, are still strong with no leaks. I am not concerned at all about the clutch operation, as it is sound. Just this whine! It is almost like, once your foot is on the pedal, there is some kind of resonance set up. Could it be the copper pipe from the MK1 Tazu fitted, vibrating through the bulkhead, or resonating along it's length. A clip of the audio I captured earlier, HERE. You may need headphones to accurately hear the whine. Just to repeat myself, this is not the usual facelift fuel delivery noise, as heard the first time I rev the car up. Any help, much appreciated, as usual! __________________ Click HERE To Be Added To The South West Members Location Map Upgrades/Mods so far: Custom Angel Eye DRL's, MG7 Rear lights, Custom Door Cards, MGR Plates, Red Alcantara Seats, Black Oak Dash, Powerflex bushes, Plenum Spy Mod, Rear Light Seals, 5000K HID Kit, Navall 3 DD, Blue LED Conversion, Custom badges, Union badges, Flip key. Working on more! [SIGPIC][/SIGPIC]

7th December 2015, 00:02	#2
muggerbee Gets stuck in 75 Tourer (04),75 Saloon (04) Join Date: Aug 2011 Location: wigan Posts: 616 Thanks: 45 Thanked 109 Times in 83 Posts	just guessing from the noise, but without the clutch aspect i'd have said alternator bearings, if it's clutch dependent then the only thing I can think of would be the thrust bearing __________________ 2004 1.8T Connie 2004 Connie SE Tourer Cdti

7th December 2015, 00:12	#3
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Thrust bearing. What brand of parts were used? __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

7th December 2015, 08:25	#6
daznkel Posted a thing or two 04 MG ZT+ 190 XPG & 99 (T) Dealer Launch 75 V6 Connie Auto Join Date: Oct 2012 Location: Plymouth Posts: 1,080 Thanks: 615 Thanked 456 Times in 309 Posts	When I bought the car on 126k it had its slave replaced. About 6 months later it failed again due to cheap parts fitted. I then purchased the LUK slave myself after finding where to source a genuine one from Andy Willi. Myself and a mechanic mate fitted it and all was good for 300 miles or so, then the master went and was replaced with a mk1 Tazu. All has been great since and the clutch still appears to be strong even now. Just this noise. __________________ Click HERE To Be Added To The South West Members Location Map Upgrades/Mods so far: Custom Angel Eye DRL's, MG7 Rear lights, Custom Door Cards, MGR Plates, Red Alcantara Seats, Black Oak Dash, Powerflex bushes, Plenum Spy Mod, Rear Light Seals, 5000K HID Kit, Navall 3 DD, Blue LED Conversion, Custom badges, Union badges, Flip key. Working on more! [SIGPIC][/SIGPIC]

12th December 2015, 20:25	#10
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	We've had numerous LUK slaves fail just after a year or less than 15k miles !! LUK will try and wriggle out of ANY warranty claim. Whereas WE honour a 12 month/12,000 mile warranty leaving us well out of pocket. It's another case of large companies winning over the end user or small family business. Personally I think the whole affair stinks. We have not won ONE case against LUK Another company on our Blacklist I'm afraid to say. So now we've moved on to the metal slave. Qty 9 fitted in last 12 months and no failures yet. One is fitted to a local Taxi CDTi and now covered 37k miles so looking good so far __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

7th December 2015, 08:15	#5
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Have to go with slave cylinder here. Mine went, after reading a LuK was fitted 12 mths before I bought the car. It had lasted 18mths. After posting pics of it after removal it appeared it wasn't a LuK after all.

7th December 2015, 08:26	#7
steve1975 Banned rover 75 saloon Join Date: Oct 2015 Location: workington Posts: 1,890 Thanks: 385 Thanked 449 Times in 279 Posts	when i read your title it made me think of swmbo hahaha

7th December 2015, 08:32	#8
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	This was removed when mine failed, Andi Willi identified it as a Lucas I think, in an ECP box. It deffo wasn't a LuK. http://www.the75andztclub.co.uk/foru...91&postcount=2

12th December 2015, 16:50	#9
e30325itourer Loves to post mgztt190/bmw e30 325i tourer Join Date: Sep 2015 Location: Ballyclare Posts: 316 Thanks: 50 Thanked 50 Times in 41 Posts	any update on this my ztt is exactly the same?