Mud-club

Vehicle & Technical => Discovery => Topic started by: dimoven on October 29, 2006, 08:54:16

Title: vibration
Post by: dimoven on October 29, 2006, 08:54:16

Hello to one and all
  Can anyone suggest why on start up i get a lot of vibration,it feels like it is coming from the front prop up through the gear box+tranny(which are working fine).Once in motion vibration reduced to a pulsing/jerky feel noticable when i slow down.
In the last year the front axle has been rebuit,recently the tyres were rebalanced no problems until two weeks ago it is becoming progressively worse.
j reg 200 tdi not modified.
    regards Donn.

Title: vibration
Post by: disco maniac on October 29, 2006, 09:03:18

have you checked your engine mountings ?

Title: vibration
Post by: chuggaman on October 29, 2006, 09:08:34

check your propshaft ujs and balancing.and the tightness of the flange on the transferbox.

mike

Title: vibration
Post by: dimoven on October 29, 2006, 09:22:10

Thank you guys, i will check the flange and uj-s today as the vibration occurs as soon as i start her up and seems very localised ie coming up through the gear box and tranny i thing it may be uj-s apart from feeling for too much play what should i be looking for?
cheers Donn

Title: vibration
Post by: Skibum346 on October 29, 2006, 10:12:30

If vibration is present whilst stationary, doesn't it exclude props...?   :shock:

Title: vibration
Post by: dimoven on October 29, 2006, 10:27:48

hello Skibum,
 Er that sounds like a brilliant deduction it also sounds a little ominous.
 Can you suggest an alternative problem i should consider.
  heres hoping
 Donn

Title: vibration
Post by: Budgie on October 29, 2006, 11:46:52

Engine & gearbox mountings would be a good palce to start, sometimes they delaminate allowing free movement.

Clutch cover plate thrown a spring?
Crankshaft front pully bolt loose?

Title: vibration
Post by: Range Rover Blues on October 29, 2006, 12:03:31

Misfire or burned out valve(s).

Talking of delaminated engine mounts, you should see the set I took off the LSE, they had actualy burned away and the engine was held in by gravity.

Title: vibration
Post by: dimoven on October 29, 2006, 13:16:33

You guys are awesome!
 I have just been to Asda,there was some vibration , a characteristic
of this problem is that once the engine has warmed up, it is tolerable .First thing in the morning when i start the car up the ,"shake ,rattle +role is scary"
I am burning diesel as well but thats my own fault for experimenting and despite a filter and oil change i cannot remove the smoky exhaust fumes.
We live and learn until its too late!

     thanks for your help
Donn

Title: Re: vibration
Post by: Skibum346 on October 29, 2006, 23:56:51

Quote from: "dimoven"

hello Skibum,
 Er that sounds like a brilliant deduction it also sounds a little ominous.
 Can you suggest an alternative problem i should consider.
  heres hoping
 Donn

Sorry matey but I can't add anything that the other guys haven't already. Mounts are a good place to start as I've seen some delaminated ones and the engine was very loose.

Only other thought is a problem I have after my last off road play... the exhaust now rattles against the gearbox cross member at cold tickover. Warmed up it's fine, but that's more of a rattle than a vibration.

Keep us up to date with any diagnosis.... proffesional or otherwise!

Skibum