Knocking sound when brakes are on
#1
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Year: 1988
Model: Cherokee
Engine: 4.0L
Knocking sound when brakes are on
On my '88 XJ I've noticed a knocking noise when I'm stationary, in drive & of course on the brakes (say at traffic lights). I can feel a physical clunk along with the sound.
What would this be / how do I fix it?
Thanks in advance guys.
What would this be / how do I fix it?
Thanks in advance guys.
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Year: 1988
Model: Cherokee
Engine: 4.0L
I'll be putting in a new CPS on Thursday, when it's up in the air I'll have a friend stand on the brakes to replicate the problem & see what I can see.
Doobie - I'll listen more carefully as I'm slowing down but it's definitely more noticeable at a dead stop.
bsflipfrontflip - I'll check that on Thursday as well but presum I should here noises as I go over bumps in the road as well
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#8
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Year: 1998, 1999
Model: Cherokee
Engine: 4.0
Do you know how to check the u-joints on the front driveshaft? And the slip joint? Odd that the sound would happen when stopped though... A clunk or metal to metal bind might lean us towards the front driveshaft. A metal tinging sound would lead us to the exhaust pipe.
I wonder how the motor mounts and transfer case mount is? Can you check those?
Mike
I wonder how the motor mounts and transfer case mount is? Can you check those?
Mike
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Year: 1998, 1999
Model: Cherokee
Engine: 4.0
Ahhh, wait a minute... It's not the transfer case shift handle is it? When you hear the rattle can you stop it by putting your hand on the transfer case shift handle?
Mike
Mike
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Year: 1988
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OK so I turned the radio off & had a proper listen today.
It is definitely a clunking noise from underneath the front of the car - I also noticed it made the same noise on hard acceleration....when it's just cruising along the noise isn't there. I did not notice the noise as I was slowing down.
I had wondered if it was something like a u-joint. When I'm underneath her tomorrow I'll see if anything is obviously loose.
I'll see if it's the transfer case handle & I'll see if it happens in any other transfer case position....she's always been in 2wd since I got her.
It is definitely a clunking noise from underneath the front of the car - I also noticed it made the same noise on hard acceleration....when it's just cruising along the noise isn't there. I did not notice the noise as I was slowing down.
I had wondered if it was something like a u-joint. When I'm underneath her tomorrow I'll see if anything is obviously loose.
I'll see if it's the transfer case handle & I'll see if it happens in any other transfer case position....she's always been in 2wd since I got her.
#12
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Year: 1988
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I went for a short drive in part time 4wd & a short drive in full time 4wd high...the same noise occured in both settings.
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Year: 1998, 1999
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Engine: 4.0
mike
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Year: 1988
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I think it's u-joints in the driveshaft or Drivers side axel. Your original post threw me though when you said you could hear it when you weren't moving. Just remember to take a long screwdriver or prybar and really put some pressure on those u-joints to check them out. Disreguard the screwdriver or prybar comment if you already knew that...
mike
mike
Caged - how would I check those? I'm sure there are all sorts of things wrong with this car, eventually I'll fix them all, but I think the noise sounds like it's coming from a rotating part.
Last edited by UK PONY; 10-07-2009 at 10:59 PM.