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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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07 V70 D5 estate harshness.Views : 1022 Replies : 8Users Viewing This Thread : |
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Jan 21st, 2011, 23:34 | #1 |
paneuro
Last Online: Jul 31st, 2015 00:46
Join Date: Sep 2009
Location: ayr
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07 V70 D5 estate harshness.
This problem is difficult to explain but I will do my best. If I put the car in first gear and keep my foot on the footbrake, then ease the clutch until it begins to bite, I get a harshness as if part of the transmission or exhaust was touching the chassis. I get the same effect if I put the car in a higher gear than it should be, in other words put it under labour. The only thing I can find is the top engine mounting feels as if it is quite loose. I can flex it with my hand but I have no idea how firm this mounting should be. Has anybody got any other ideas as I makes the car quite unpleasant to drive particularly at low speeds like in traffic. TIA Turbo D.
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Jan 22nd, 2011, 01:52 | #2 |
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Last Online: Mar 10th, 2016 17:58
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The front and rear engine mounts are pneumatic : check the little hoses are connected/intact.
There's a lot of slack in the top engine mount - and unless the rubber's significantly shagged, it should be OK. It's connected to the strut brace which is isolated with rubber dampers - but these last a long time. You really need observe with the bonnet up.
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S80 D5-S manual (facelift) MY04 (avec V70 driver's seat) |
Jan 22nd, 2011, 12:11 | #3 |
paneuro
Last Online: Jul 31st, 2015 00:46
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Hi, I have removed the top engine mounting and crossbar and it appears to be a square type. the centre can be moved about by hand, it does not appear to be bonded to the large aluminium casting. Can anybody say if this is normal? I would have thought the mounting would be bonded on both inner and outer parts and the rubber would act as the flex part, or am I wrong and this is a new modern type? Turbo d
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Jan 22nd, 2011, 12:27 | #4 |
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That's the later type and the rubber's unbonded and free within the casting.
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S80 D5-S manual (facelift) MY04 (avec V70 driver's seat) |
Jan 22nd, 2011, 15:53 | #5 | |
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Last Online: Nov 20th, 2018 01:45
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Quote:
Any excess vibration you are getting is not caused by the mount being too loose. Just the opposite is the case. It is a common complaint that unwanted vibrations in the passenger compartment are increased by putting stiff and tight aftermarket polyurethane bushings in the upper mount. Last edited by Jim314; Jan 22nd, 2011 at 15:56. |
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Jan 22nd, 2011, 18:36 | #6 |
paneuro
Last Online: Jul 31st, 2015 00:46
Join Date: Sep 2009
Location: ayr
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I don't intend driving it without the top mount but I need to find what is vibrating as its driving me up the wall. I have also got an oil leak high up on the rear of the engine. This was brought to my attention by the Volvo dealer who serviced the car last week. I have the car on ramps at the moment with the underpan removed and although the rear of the engine is covered in oil the only leak I can find is from the sump plug. I have wiped as much of the oil as I can get at and let the car idle for about 30 minutes with no obvious ill effects other than the sump plug. regards Turbo d. P.S. There seems to be a large weight on the crossmember behind the sump which is rubber mounted and can be made to hit against the crossmember if you give it a good dunt with the heel of your hand!!! Could this be the phantom vibe?
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Jan 23rd, 2011, 14:16 | #7 |
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Sounds like the rear engine mounting has failed due to being covered in oil.
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Jan 23rd, 2011, 15:21 | #8 | |
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Quote:
And crankcase pressure will blow past the weakest gasket or seal (often starting with the oil filler and rocker gasket) - resulting in oil leakage.
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S80 D5-S manual (facelift) MY04 (avec V70 driver's seat) |
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Feb 5th, 2011, 14:30 | #9 |
paneuro
Last Online: Jul 31st, 2015 00:46
Join Date: Sep 2009
Location: ayr
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Hi again, so many people ask for help and never post when the answer to the problem is found. I have just cured the problem of the harshness on my car so I thought I would share it with everyone. I was underneath when I noticed a large rubber mounted weight in the crossmember channel that runs accross just where the exhaust/cat is mounted. When I knocked it with the heel of my hand it would make a slight rattling noise, I decided to remove it and have a look (2 large torx) when I got it off I found that one of the exhaust mounting bracket bolts had bored a hole about 2mm deep in the side of the weight. This can't be seen from the underside. I then removed the offending bolt and cut 5mm of the end and refitted it. I refitted the weight and took the car out on the road. "EUREKA" a completely different car. I feel the weight may have been slightly loose and there is some leeway in the holes on the bolts that hold the weight on, I may have been able to move the weight away from the offending bolt but anyway I just made sure it would not happen again. Hope this helps someone else. Turbo D
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