Vibrating Disco
Discussion
Hi,
I have a 2011 disco 4. Recently when driving along the car suddenly begins to vibrate as though driving over a rumble strip. No impact on performance or engine noise, revs etc just like driving over a rumble strip. After a couple of minutes it then stops and all back to normal, no apparent detriment. It does it occasionally so no rhyme or reason for it.
Any ideas what it could be? My only thinking is a potential ABS issue perhaps as the vibration is consistent.
Thanks!
I have a 2011 disco 4. Recently when driving along the car suddenly begins to vibrate as though driving over a rumble strip. No impact on performance or engine noise, revs etc just like driving over a rumble strip. After a couple of minutes it then stops and all back to normal, no apparent detriment. It does it occasionally so no rhyme or reason for it.
Any ideas what it could be? My only thinking is a potential ABS issue perhaps as the vibration is consistent.
Thanks!
My initial thoughts.
1.) Torque converter. Any fluctuations on the rev needle when at constant speed. Was your vibration under load (Acceleration)
2.) Prop Shaft central UJ
3.) Sticky brake caliper
Hopefully its 2 or 3 and first one is about £1.2k drive in drive out and it could also goose the gearbox too.
I doubt its anything todo with the suspension air compressor.
1.) Torque converter. Any fluctuations on the rev needle when at constant speed. Was your vibration under load (Acceleration)
2.) Prop Shaft central UJ
3.) Sticky brake caliper
Hopefully its 2 or 3 and first one is about £1.2k drive in drive out and it could also goose the gearbox too.
I doubt its anything todo with the suspension air compressor.
Edited by bakerstreet on Wednesday 27th April 12:10
Zerosumgame said:
It's the torque converter. You need to put some additive into your gearbox - search for something called "Lubeguard Shudderfix"
Poor advice. It fixes nothing. If there is something mechanically wrong with the gearbox, I'd advise getting it fixed/replaced, not bodging it by chucking in some anti judder. bakerstreet said:
Poor advice. It fixes nothing. If there is something mechanically wrong with the gearbox, I'd advise getting it fixed/replaced, not bodging it by chucking in some anti judder.
I think it's pretty well regarded form of curing minor issues on the Discovery actually, fairly well known about in these circles. beanoir said:
I think it's pretty well regarded form of curing minor issues on the Discovery actually, fairly well known about in these circles.
No it isn't. Any decent garage will tell you that throwing in anti judder will not fix a worn out TC. Its so people can avoice £1-3k on a new box or TC converter. It hides a shudder. It doesn't fix anything.
I'm sure a garage (decent or not) would tell you to wade into a £3k job to start with thank you very much.
If you throw some in and it cures the judder then you know it was the TC and can start saving.
It hides a shudder. It doesn't fix anything.
If you throw some in and it cures the judder then you know it was the TC and can start saving.
bakerstreet said:
beanoir said:
I think it's pretty well regarded form of curing minor issues on the Discovery actually, fairly well known about in these circles.
No it isn't. Any decent garage will tell you that throwing in anti judder will not fix a worn out TC. Its so people can avoice £1-3k on a new box or TC converter. It hides a shudder. It doesn't fix anything.
Zerosumgame said:
I'm sure a garage (decent or not) would tell you to wade into a £3k job to start with thank you very much.
If you throw some in and it cures the judder then you know it was the TC and can start saving.
Well a decent garage wouldn't advise you to put Dr. Tranny in for a start. If you throw some in and it cures the judder then you know it was the TC and can start saving.
They would probably advise you that could be could be facing a bill from £1-3k depending on if the TC is gone or the box needs refurbing as well. Also worth noting that its around £2.5k for a new box and that included a new TC.
The OPs car is a 2011 and might be the 8Sp box, which is known to be considerably more reliable than the 6Sp in D3s and early D4s. He could be lucky and get away with Prop shaft center bearing or it could be a wheel bearing, TC or a sticky brake caliper.
bakerstreet said:
beanoir said:
I think it's pretty well regarded form of curing minor issues on the Discovery actually, fairly well known about in these circles.
No it isn't. Any decent garage will tell you that throwing in anti judder will not fix a worn out TC. Its so people can avoice £1-3k on a new box or TC converter. It hides a shudder. It doesn't fix anything.
I had a similar problem, 2014 disco 4, it would still continue when I put the car in neutral and coasted too. Totally random when it would start.
Have you checked the heat coming from the rear discs after it happens? It turned out the shoes for the handbrake were binding slightly and the expanding getting hot. They were totally shot when the garage replaced them.
Have you checked the heat coming from the rear discs after it happens? It turned out the shoes for the handbrake were binding slightly and the expanding getting hot. They were totally shot when the garage replaced them.
bakerstreet said:
My initial thoughts.
1.) Torque converter. Any fluctuations on the rev needle when at constant speed. Was your vibration under load (Acceleration)
2.) Prop Shaft central UJ
3.) Sticky brake caliper
Hopefully its 2 or 3 and first one is about £1.2k drive in drive out and it could also goose the gearbox too.
I doubt its anything todo with the suspension air compressor.
No, nothing changes with the engine or drive only the ride. It needs to go in for service so will get brakes checked as thinking about it that is probably most likely. It doesn't feel mechanical so fairly sure not prop shaft or gearbox.1.) Torque converter. Any fluctuations on the rev needle when at constant speed. Was your vibration under load (Acceleration)
2.) Prop Shaft central UJ
3.) Sticky brake caliper
Hopefully its 2 or 3 and first one is about £1.2k drive in drive out and it could also goose the gearbox too.
I doubt its anything todo with the suspension air compressor.
Edited by bakerstreet on Wednesday 27th April 12:10
Rushjob said:
Does this happen by any chance when moving ahead, but then disappears when you take a bend to the left or right? Free play in the steering rack caused this on my D3 ( there was IIRC a workshop advisory for it )
Not sure, it does seem to be in a straight line when it goes but haven't paid attention to steering, but I will next time to see what impact and also dropping to neutral to see what happens.My D3 did something similar to this.
It was a uj on the front propshaft that was worn and would occasionally start to vibrate and then go back to fine.
Also, the anti judder stuff for gearboxes only buys you some time to save up for a rebuild.
Mine had 3 doses in it by the time it was toast
It was a uj on the front propshaft that was worn and would occasionally start to vibrate and then go back to fine.
Also, the anti judder stuff for gearboxes only buys you some time to save up for a rebuild.
Mine had 3 doses in it by the time it was toast
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