CDTi cabin vibrations

goofysth · 20th January 2018, 19:33

Hello to all,

I had some vibrations in cabin (steering wheel, dashboards etc.) and i found out that my lower engine mount is messed up, so i changed it.

Vibrations disappeared for some time, and now reappeared with these symptoms:
- When idling (~780 rpm), steering wheel is shaking and making lots of noise
- When accelerating (1600-1800 rpm) dashboard is making noise

I removed all the plastics and no wires or other parts behind the dashboard are making noise, so i think it is excessive noise is coming from engine bay.

After forum research i found out that maybe hydromount is making troubles, but as i can see, it looks pretty good.

Does anyone has any idea on this frustrating-vibrating situation? And how can i test the hydromount?

trebor · 20th January 2018, 20:28

my dashboard doesnt make a noise but the steering wheel at idle has an awful vibration, I have replaced the bottom engine mount and fitted a brand new hydromount but its made no difference, so gearbox mount is next on my list.

By the way vibration can also be down to injectors but mine have been tested and well within spec

goofysth · 20th January 2018, 21:33

Quote:

Originally Posted by trebor

my dashboard doesnt make a noise but the steering wheel at idle has an awful vibration, I have replaced the bottom engine mount and fitted a brand new hydromount but its made no difference, so gearbox mount is next on my list.

By the way vibration can also be down to injectors but mine have been tested and well within spec

Thanks Trebor.
Yep, mine injectors are also very good.

What lower engine mount you put? Powerflex or genuine? Some words say that powerflex can be the cause...

Daveluck · 20th January 2018, 23:41

https://the75andztclub.co.uk/forum/s...teering+column

A little light reading for you...

genpk · 21st January 2018, 11:12

Hydramount can look fine but be knackered.
My diesel had similar issues, looked at the hydramount, no leaks , looked fine.
Removed it and the rubber had cracked right through but there was no leaking fluid.
Changed it and it was a lot better vibration wise.

JMW · 21st January 2018, 19:57

Quote:

Originally Posted by goofysth

Hello to all,

I had some vibrations in cabin (steering wheel, dashboards etc.) and i found out that my lower engine mount is messed up, so i changed it.

Vibrations disappeared for some time, and now reappeared with these symptoms:
- When idling (~780 rpm), steering wheel is shaking and making lots of noise
- When accelerating (1600-1800 rpm) dashboard is making noise

I removed all the plastics and no wires or other parts behind the dashboard are making noise, so i think it is excessive noise is coming from engine bay.

After forum research i found out that maybe hydromount is making troubles, but as i can see, it looks pretty good.

Does anyone has any idea on this frustrating-vibrating situation? And how can i test the hydromount?

I had a similar vibration with mine when I first got it, changed the lower mount, hydro and upper mount and that sorted it, the lower engine mount although looking new was in fact the wrong one, it was from the petrol version so check that yours doesn’t have a T stamped on it as that is the the wrong one for you diesel.

goofysth · 22nd January 2018, 09:43

Quote:

Originally Posted by Daveluck

https://the75andztclub.co.uk/forum/s...teering+column

A little light reading for you...

This is a nice read Daveluck

I have to check the hangers and hydramount.

Actually, my hydramount looks very good from the top...
How difficult is to change the hydramount?

Daveluck · 22nd January 2018, 12:05

Quote:

Originally Posted by goofysth

This is a nice read Daveluck

I have to check the hangers and hydramount.

Actually, my hydramount looks very good from the top...
How difficult is to change the hydramount?

fairly easy...you just need to take your time.

The thing is, generally you wont know if your top hydramount is OK until you take off the mount that sits on top of it. Mine looked OK but when the weight of the engine was removed and the mounting you could see it was knackered.

the hydramount has a machined top and a special tool is available to help you remove it and tighten the new one. I made my own from a length of tubing while others use a cold chisel and hammer very carefully drift the hyrdamount on and off.

There are plenty of threads about it.

bsafly · 5th February 2018, 21:45

I had similar symptoms with my mk1 connie CDTI tourer, turned out to be fractured exhaust just behind the cat, may be worth a look (oddly, no exhaust smells in the cabin, and no excess exhaust noise!)

Arctic · 6th February 2018, 11:15

Quote:

Originally Posted by JMW

I had a similar vibration with mine when I first got it, changed the lower mount, hydro and upper mount and that sorted it, the lower engine mount although looking new was in fact the wrong one, it was from the petrol version

Quote:

so check that yours doesn’t have a T stamped on it as that is the the wrong one for you diesel.

The highlighted information is wrong I am afraid, as the lower engine mount with the letter T stamped on it is in fact the correct one for the diesel, and is the original mount.

Lower engine mount for Petrol 1.8T 1.8 is stamped with a letter M

Lower engine mount for Petrol 2.5 2.0 is stamped with a letter P

Lower engine mount for diesel 2.0 is stamped with a letter T

20th January 2018, 19:33	#1
goofysth Avid contributor Rover 75 Contemporary Saloon Join Date: Apr 2012 Location: Capitol Posts: 116 Thanks: 37 Thanked 10 Times in 10 Posts	CDTi cabin vibrations Hello to all, I had some vibrations in cabin (steering wheel, dashboards etc.) and i found out that my lower engine mount is messed up, so i changed it. Vibrations disappeared for some time, and now reappeared with these symptoms: - When idling (~780 rpm), steering wheel is shaking and making lots of noise - When accelerating (1600-1800 rpm) dashboard is making noise I removed all the plastics and no wires or other parts behind the dashboard are making noise, so i think it is excessive noise is coming from engine bay. After forum research i found out that maybe hydromount is making troubles, but as i can see, it looks pretty good. Does anyone has any idea on this frustrating-vibrating situation? And how can i test the hydromount?

20th January 2018, 20:28	#2
trebor This is my second home Rover 75 CDTi Connoisseur SE & MG ZT Saloon 190 Join Date: Jun 2007 Location: Coven Posts: 12,523 Thanks: 526 Thanked 1,877 Times in 885 Posts	my dashboard doesnt make a noise but the steering wheel at idle has an awful vibration, I have replaced the bottom engine mount and fitted a brand new hydromount but its made no difference, so gearbox mount is next on my list. By the way vibration can also be down to injectors but mine have been tested and well within spec __________________ www.midlandsnanomeets.co.uk Robs Car Gallery Coven near Wolverhampton WV9 2000 Cowley Built Rover 75 2.0 V6 Club SE/ Atlantic Blue/ Sandstone/Walnut (daily driver) 2003 Land Rover Freelander 1 TD4 HSE Helsinki Blue/Black Leather (swmbo daily driver)

5th February 2018, 21:45	#9
bsafly Just going about! Rover 75 CDTi Connie SE Tourer starlight silver and serpents. MG ZT-T 190+ in Raven Black. Join Date: Mar 2016 Location: Great Leighs Posts: 468 Thanks: 626 Thanked 167 Times in 110 Posts	CDTI cabin vibrations. I had similar symptoms with my mk1 connie CDTI tourer, turned out to be fractured exhaust just behind the cat, may be worth a look (oddly, no exhaust smells in the cabin, and no excess exhaust noise!)

20th January 2018, 23:41	#4
Daveluck Gets stuck in 75 saloon 2.0 diesel Join Date: Feb 2016 Location: Panton, lugo, Galicia Posts: 945 Thanks: 236 Thanked 192 Times in 143 Posts	https://the75andztclub.co.uk/forum/s...teering+column A little light reading for you...

21st January 2018, 11:12	#5
genpk Posted a thing or two Rover 75 Saloon MGZT Join Date: Jul 2012 Location: Perth, AUSTRALIA Posts: 1,663 Thanks: 3 Thanked 461 Times in 299 Posts	Hydramount can look fine but be knackered. My diesel had similar issues, looked at the hydramount, no leaks , looked fine. Removed it and the rubber had cracked right through but there was no leaking fluid. Changed it and it was a lot better vibration wise.