Hi,I own Toyota Allion 2004,there is a knock sound coming from the front, around the suspension arm...have changed the suspension arm bushes, springs and shocks...any help please!

SOURCE: Cavalier rear suspension clunks

HI, this noise can be caused by worn shocks,even if the bushings look good, you can remove one of them and check if is hard to constracts ,if not they must be replaced,

SOURCE: Rear Suspension noise on 2001 Jeep Grand Cherokee V8

Check sway bar. On some models as suspension sags, sway bar outer ends will contact the body, leaving a mark or dent just above the end, causing a bang over bumps. Only way to correct this is to change springs or add a spring lift.

SOURCE: Saab 93 - noisy when going over bumps on the road.

Have you tried driving over a bump whilst also applying the brakes? (Right foot on gas, left gently on brake - with no one behind you!) If the noise goes away, then it could be the brake pads that are not fitted correctly. Only posting this, as this just happened to mine...the mechanic took it over bumps and noise was there. Applied brakes whilst going over bump, noise went away. Replaced badly fitted rear pads (had been bodged by another garage) and the problem was solved.

SOURCE: knocking sound in front suspension over bumps.

front strut tops make his noiset

SOURCE: knock on front left suspension v70 52 plate

I had a similar noise, I took apart the strut and the bushing on top of the strut was falling apart. Replaced it with a new one for under 100.00. No more noise.