Vehicle & Technical > Defender

Steering violently bouncing out of control while on road

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kizz81:
hello,
my 90 has had an MOT and failed today but not on the steering problem thats getting progressivly worse over the recent weeks.

ill be driving along at the speed limet or under because thats all the landy does :lol:  and ONLY SOMTIMES not all the time when i hit a bump the steering seriously vibrates from side to side and the whole landy vibrates, it feels like a tyre has gone flat. i have been putting the problem down to the slightly loose powersteering belt untill on friday when driving out to recover a friend from a ditch i hit a bump coming off a roundabout and it did the problem so bad that my dad in the passenger seat could feel it and said i have a flat tyre :shock: . it feels a little bit like the power steering pump stops, starts, stops, starts...... is this possible in the way i have mentioned.

Advice needed please,

cheers kieran
 :shock:

redhand:
Sounds more like loose radius arm bushes

Saffy:
Does is resonant, as in start as small shake/wobble then rapidly increase violently out of control until you reduce speed?
Have seen this on a m8's truck, its horrible to witness as both front wheel wobble out of control. Only happened now and again, certain speed - bump in road and bingo.
In that case it was worn Panhard bushes!
Have a look underneath at the panhard rod (rod in front of the axle which is behind the steering rod) get someone to turn the steering wheel from side to side while you check for play in both ends of the rod. Any play there will be the culprit and you'll need new bushes.

ian_s:
i've had this on my series3, it was the preload on the swivels. i was told what it could be by a rangerover driver, he had experienced the same symptoms
i dont know if defenders are that sensitive to it
i'd check over all the bushes first as mentioned above though

jimthelandyman:
Just had the same problem was the panhard rod bushes, easy job only took half an hour to do.

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