Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: captain cavalier on February 26, 2011, 12:56:40 PM

Title: front driveline noise
Post by: captain cavalier on February 26, 2011, 12:56:40 PM

Grumbling from the front end when put in 4wd

changed rear axle

front axle

both props and transfer case

still the same noise

also run on road tyres

also makes a knock when lifting over steep bridges as though anti roll bar loose but checked links and shocks but all ok

Title: Re: front driveline noise
Post by: Nosebolt on February 26, 2011, 01:06:09 PM

drum playing badgers in your wheel well?

Title: Re: front driveline noise
Post by: captain cavalier on February 26, 2011, 06:00:30 PM

Quote from: Nosebolt on February 26, 2011, 01:06:09 PM

drum playing badgers in your wheel well?

no help then

Title: Re: front driveline noise
Post by: isle of man on February 26, 2011, 06:02:25 PM

It is a tough one to be honest - perhaps more information???

Title: Re: front driveline noise
Post by: Cockney Boy on February 26, 2011, 06:07:09 PM

Wheel bearing perhsps

Title: Re: front driveline noise
Post by: captain cavalier on February 26, 2011, 06:15:15 PM

when its put into 4wd you get the same type of noise from the front as a rear pinion bearing gone in a d35

have changed the axle and get same noise

cannot be muds as get the same noise on road tyres

driving me nuts to tell you the truth

Title: Re: front driveline noise
Post by: Nosebolt on February 26, 2011, 06:36:10 PM

is it constant with motion, like a rotary part or rhythmic with up/down travel? if you have done the axles then next to look at would be the link arms & shock mounts, but do check for badgers you never know

Title: Re: front driveline noise
Post by: isle of man on February 26, 2011, 06:38:56 PM

Remove the front prop and drive then report back....

Title: Re: front driveline noise
Post by: Bubba on February 26, 2011, 07:56:38 PM

 :iagree:

Title: Re: front driveline noise
Post by: gazjeep on February 26, 2011, 10:44:58 PM

Bent / unbalanced prop ?

Title: Re: front driveline noise
Post by: JamesH on February 27, 2011, 01:30:59 AM

If you've changed all those parts that you listed in your first post and the noise/vibrations is exactly the same then it must be that some other part is transmitting a noise or vibration that is actually normal. I would guess at control arms, do you have poly bushes installed? if factory control arms are the bushes shot? Also, as an outside shot, is the steering damper loose, bushing gone? My Dad's was making a terrible 'suspension' clunking cos of this. Shock bushes are the only other thing that springs to mind, actually the rubber isolators on top of the springs would be worth checking too if you;re under there.

Title: Re: front driveline noise
Post by: Dave69 on February 27, 2011, 06:33:30 PM

grumbling sound is constant when put into 4wd after axle swaps. if you steer left and right and the noise changes then this points towards a wheel bearing but then this would be evident in 2wd.
same noise after axle swap indicates it's not axle related.
did you use the same prop shaft ? if so remove the front as IOM has suggested and see what happens.
knackered bushes don't make rumbling they amplify every bump in the road into bangs or clunks.

either front prop joints or transfer box

Title: Re: front driveline noise
Post by: captain cavalier on February 27, 2011, 08:02:23 PM

taking prop off tommorrow lunch to try out


will post again then