View Full Version : Knocking Sound
salty
14th June 2012, 08:33 AM
Hi i have just started to get a slight knocking noise from the back of my 91 disco. Only in 1st/2nd when going slow around corners gets a bit louder if turning up a hill . Any suggestions?
loanrangie
14th June 2012, 11:15 AM
Unijoint , A frame balljoint- check balljoint first.
salty
14th June 2012, 12:44 PM
Just went for another drive with a mate and the sound is coming from the front so i think it might be cv's .
dullbird
14th June 2012, 08:13 PM
I thought CV's clicked when they failed I would say A fram ball joint or a fail bushing
Blknight.aus
14th June 2012, 09:47 PM
mormans....
if its a nice even continuous click most likely its CV/s or a UJ. hard to check without pulling the hub down so thats one for preocess of elimination
if its a clunk on and off then its most likely tcase lash or the ball joint but it can also be the locating bushes on the axle for the locating arms or radius rods. check the bushes by prying with a large screwdriver and the ball joint by applying the hand brake hard, selecting neutral then rocking the vehicle back and forth by hand.
if its a little random then its a failing wheel bearing the quick check for that is if it quiets down under brakes. to eliminate this completely jack the wheels up one at a time and check for rim rock. anything more than 1mm or so at the rim lip is out of spec and requires a bearing check and adjust.
salty
15th June 2012, 07:27 AM
Will be jacking it up tomorrow. But noticed on drive today it has a continuos click when turning on take off , if i coast around corner with no accelaration the sounds goes away. Starting to think that this is cv's . If so does anyone know the best place to buy from for cv's and wheel bearings
gazby
15th June 2012, 10:29 AM
Easy check, I know you said originally noise from the rear, then determined front, have you checked the rubber/fabric donut (if fitted) on the rear prop shaft to diff drive at the rear diff flange?
Because the vehicle is constant 4X4 any noises are hard to isolate to either end.
It'sNotWorthComplaining!
15th June 2012, 08:23 PM
mormans....
Nah mormans have that bicycle chain noise, if it's knocking it could more like be those pesky Jehovas, or the Optus door to door pest;)
Blknight.aus
15th June 2012, 09:22 PM
Will be jacking it up tomorrow. But noticed on drive today it has a continuos click when turning on take off , if i coast around corner with no accelaration the sounds goes away. Starting to think that this is cv's . If so does anyone know the best place to buy from for cv's and wheel bearings
that is most definately the CV.
MR automotive for your parts.
loanrangie
20th June 2012, 01:34 PM
Nah mormans have that bicycle chain noise, if it's knocking it could more like be those pesky Jehovas, or the Optus door to door pest;)
Could be those Jehova's that i almost reversed over a couple of weeks ago, i tried again but they were too quick :D.
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