Xc90 vibration at idle

S60D5185 · Oct 8th, 2016, 15:55

Hi my 2005, xc90 d5 has a vibration at idle.
Having heard about the vacuum mounts I've been out with a vacuum gauge. If I remove the front vac pipe from the front mount and block it off, then remove the pipe from the rear mount and replace with the vacuum gauge I get 25"hg which I believe shows the pipework and solenoid to be ok?
If I reconnect the rear pipe to the mount the system shows 15"hg with the front still blocked ?
If I unblock/replace the pipe to the front mount and have the gauge inline (both mounts connected) the system runs at 7"hg, is this normal or should I get 25"hg ?
I have previously replaced the top mount due to obvious spitting and the front/lower torque arm due to a slight knock.

S60D5185 · Oct 8th, 2016, 20:57

Anyone, can I test the mounts this way ?

outnumbered · Oct 10th, 2016, 07:25

diisconect the pipe at the t piece going to each mount , place you mittyvac on each pipe and in turn to check each mounts to see if they are holding vac.if they are okay then check the pipes and Tcg.
mike

S60D5185 · Oct 10th, 2016, 07:44

Hi Mike
I've order a mittyvac, just waiting for it to arrive. The pipe work etc holds 25"hg as I tested that with a pressure gauge, so I suspect a mount. The gearbox is sat on the bump stop, I assume it shouldn't be ? Also what is the TCG ?
thanks

JimG · Oct 10th, 2016, 09:32

Mine had a lot of vibration at idle, and got worse when I selected reverse. This was cured when I had the front and rear vacuum mounts, gearbox torque mount and top engine mount replaced.

outnumbered · Oct 10th, 2016, 19:58

Quote:

Originally Posted by S60D5185

Hi Mike
I've order a mittyvac, just waiting for it to arrive. The pipe work etc holds 25"hg as I tested that with a pressure gauge, so I suspect a mount. The gearbox is sat on the bump stop, I assume it shouldn't be ? Also what is the TCG ?
thanks

the Tcg is the governor that is att to the air box. and controls the vac to the mounts

Mike

GrahamBrown1 · Oct 11th, 2016, 18:18

My v70 had a horrible vibration and shaking at idle. Had me stumped as all the mounts were fine. vida revealed it to be number 2 injector with the fuel correction out of spec. Started and drove fine just at idle it vibrated. Fitted a new injector and it's been fine ever since. Just a thought.

Oct 8th, 2016, 15:55	#1
S60D5185 Member Last Online: Nov 20th, 2018 17:24 Join Date: Apr 2013 Location: Barnsley	Xc90 vibration at idle Hi my 2005, xc90 d5 has a vibration at idle. Having heard about the vacuum mounts I've been out with a vacuum gauge. If I remove the front vac pipe from the front mount and block it off, then remove the pipe from the rear mount and replace with the vacuum gauge I get 25"hg which I believe shows the pipework and solenoid to be ok? If I reconnect the rear pipe to the mount the system shows 15"hg with the front still blocked ? If I unblock/replace the pipe to the front mount and have the gauge inline (both mounts connected) the system runs at 7"hg, is this normal or should I get 25"hg ? I have previously replaced the top mount due to obvious spitting and the front/lower torque arm due to a slight knock.

Oct 10th, 2016, 07:25	#3
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	diisconect the pipe at the t piece going to each mount , place you mittyvac on each pipe and in turn to check each mounts to see if they are holding vac.if they are okay then check the pipes and Tcg. mike __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021

Oct 10th, 2016, 09:32	#5
JimG Premier Member Last Online: May 6th, 2024 10:16 Join Date: Aug 2010 Location: Kent	Mine had a lot of vibration at idle, and got worse when I selected reverse. This was cured when I had the front and rear vacuum mounts, gearbox torque mount and top engine mount replaced. __________________ XC90 - 2007 D5 SE LUX www.alignmycar.co.uk www.rearfacing.co.uk

Oct 11th, 2016, 18:18	#7
GrahamBrown1 VOC Member Last Online: Yesterday 22:06 Join Date: Feb 2013 Location: North Yorkshire	My v70 had a horrible vibration and shaking at idle. Had me stumped as all the mounts were fine. vida revealed it to be number 2 injector with the fuel correction out of spec. Started and drove fine just at idle it vibrated. Fitted a new injector and it's been fine ever since. Just a thought. __________________ Previous -03 S40, 04 V70 D5, 04 V70 D5 Sport, 05 V50, 07 S60 D5, 09 V70 D5 R design, 12 XC60 DrivE, 15 V60 D3 Current- 05 XC90 D5 Exec, 12 XC70 D4 AWD Se Lux, 14 S80 D3 Se Lux

Oct 8th, 2016, 20:57	#2
S60D5185 Member Last Online: Nov 20th, 2018 17:24 Join Date: Apr 2013 Location: Barnsley	Anyone, can I test the mounts this way ?

Oct 10th, 2016, 07:44	#4
S60D5185 Member Last Online: Nov 20th, 2018 17:24 Join Date: Apr 2013 Location: Barnsley	Hi Mike I've order a mittyvac, just waiting for it to arrive. The pipe work etc holds 25"hg as I tested that with a pressure gauge, so I suspect a mount. The gearbox is sat on the bump stop, I assume it shouldn't be ? Also what is the TCG ? thanks

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