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martyin3d
Joined: 26 Mar 2013 Posts: 85 Location: Cornwall
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Posted: Thu Apr 18, 2013 23:12 Post subject: L300 Clonk when braking |
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I noticed this morning that my recently purchased L300 is making a bit of a clonk sometimes when braking sharply. When you hear the clonk the brakes seem to let off for a split second, similar to the feeling of ABS. Sounds like it's coming from the front passenger side. The front passenger side brakes have just started to squeak a bit too. I'm wondering if that's a coincidence or if it's connected.
It's just passed it's MOT with no advisories (not sure if that helps rule anything out) and the anti roll bar bushings have just been changed.
Thanks a lot for any help! |
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Posted: Thu Apr 18, 2013 23:12 Post subject: Google Ads keep this community free to join! |
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BFG
Joined: 05 Mar 2009 Posts: 340 Location: Exmouth, Devon, UK
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Posted: Fri Apr 19, 2013 6:43 Post subject: |
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I have this on my L300 and have had ever since I got it.
Tried quite a few things, replaced anti roll bar bushings new shocks etc had the noise prior to my 2" lift and bigger wheels and it was there after.
Tried 2 different sets of new brake pads. Theres no play either up/down or left right on the wheels (Bearings / ball joints). Did all the grease points.
No excessive heat on wheels after a long drive (was thinking calipers binding)
Its a grinding/crunching noise you get just as you are coming to a stop and just as you start moving sometimes theres juddering also (all from the front)
2 Different mechanics have looked at it and came to the conclusion its just one of those things with an old vehicle but I'm not happy about it.
Give it another month and I'm gonna overhaul the front suspension with new bearings, upper and lower ball joints, control arms and I have a brake
caliper service kit (new rubbers etc) I'm gonna use too.
Gonna hit the manuals and work out where the engine mounts are also and see if they need tightening up.
If the noise is still there after this I'm guessing it must be transmission. _________________ K Reg Mitsubishi Delica Star Wagon 2.5T D.
Dreaming of what MOD to do next! |
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martyin3d
Joined: 26 Mar 2013 Posts: 85 Location: Cornwall
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Posted: Fri Apr 19, 2013 8:01 Post subject: |
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Yea, what you're describing is exactly what I'm getting on mine.
Let me know if you do ever work out what it is, ill make sure I post an update if I get it sorted :D |
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16295 Location: Huddersfield
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Posted: Fri Apr 19, 2013 9:04 Post subject: |
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BFG wrote: |
Its a grinding/crunching noise you get just as you are coming to a stop and just as you start moving sometimes theres juddering also (all from the front) |
If that was happening on my L400 I would be 100% certain it was my ABS working.
Try disconnecting the connectors to the Wheel sensors, or pull the fuse out, which will put it into standard braking mode, then try it. It's an easy way to rule it out if it's something else. _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
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martyin3d
Joined: 26 Mar 2013 Posts: 85 Location: Cornwall
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Posted: Fri Apr 19, 2013 9:07 Post subject: |
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As far as I know it doesn't have ABS? |
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Yojimbo
Joined: 01 Dec 2005 Posts: 1202 Location: Bucks
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Posted: Fri Apr 19, 2013 9:20 Post subject: |
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ABS? What strange witchcraft is this? BURN HIM! |
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Lewis Site Admin
Joined: 25 May 2006 Posts: 16295 Location: Huddersfield
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Posted: Fri Apr 19, 2013 9:25 Post subject: |
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I take it they predate the invention of ABS. ? _________________
Copyright is retained for all my photos. Please don't copy them without asking permission
Do not blindly go where the path may lead you. Go where there is no path and leave a trail that others may follow!
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CaptainVeg
Joined: 18 Jan 2011 Posts: 186 Location: Edinburgh
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Posted: Fri Apr 19, 2013 9:41 Post subject: |
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Yes, we do have an Approximate Breaking System.
Mine does the clonk as well, but I think it is the old front shocks kind of crunching badly. Maybe not. I would care if this was the only strange noise, but it isn't... |
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tomkranz Lifetime member
Joined: 22 Apr 2008 Posts: 86 Location: Crowthorne, Berkshire
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Posted: Fri Apr 19, 2013 10:06 Post subject: |
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Mine has this as well. I've replaced the front shocks, the calipers, the pads, the bearings, all the suspension bushes - and it still happens. Had 4 different mechanics take a look, had them in the van so they can hear the noise, they're all stumped as well.
Took the van out to an airfield and did some panic stops from 70 - whatever it is, it doesn't appear to affect the braking ability or the way the van stops.
It's mystifying, but having spent so much effort testing the impact, I've just started to accept it as one of those idiosyncrasies of the Delica ;-)
Cheers,
TOM _________________ --
What I do - Golden Apple Enterprises Ltd. and SiliconBunny |
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martyin3d
Joined: 26 Mar 2013 Posts: 85 Location: Cornwall
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Posted: Fri Apr 19, 2013 10:22 Post subject: |
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It's good to know I'm not the only one and that it's probably nothing serious! |
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Yojimbo
Joined: 01 Dec 2005 Posts: 1202 Location: Bucks
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Posted: Fri Apr 19, 2013 10:35 Post subject: |
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Mine never does this, so there must be some difference |
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CaptainVeg
Joined: 18 Jan 2011 Posts: 186 Location: Edinburgh
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Posted: Fri Apr 19, 2013 14:19 Post subject: |
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This looks suspicious. I would check that it is a real L300, because it should be doing clonk, or at list clink. |
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theFleured Lifetime member
Joined: 11 Jul 2012 Posts: 1810 Location: Newbury
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Posted: Fri Apr 19, 2013 14:22 Post subject: |
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You're all miles off, the L300 is quite old now and the braking system relies on a land anchor, the clonk is it hitting the ground when you apply the brakes when it comes to a stop the anchor is retracted _________________
"The thing about quotes on the internet is that you cannot confirm their validity." - Abraham Lincoln |
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PinkPig Lifetime member
Joined: 05 Aug 2004 Posts: 2720 Location: Southampton, UK
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theFleured Lifetime member
Joined: 11 Jul 2012 Posts: 1810 Location: Newbury
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Posted: Fri Apr 19, 2013 15:20 Post subject: |
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PinkPig wrote: |
I thought the clonk was my heart leaving my mouth and going back down to my chest as I managed to stop before rear ending someone. |
Modern road surfaces are difficult for the land anchor to grip _________________
"The thing about quotes on the internet is that you cannot confirm their validity." - Abraham Lincoln |
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Yojimbo
Joined: 01 Dec 2005 Posts: 1202 Location: Bucks
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Posted: Fri Apr 19, 2013 16:01 Post subject: |
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theFleured wrote: |
PinkPig wrote: |
I thought the clonk was my heart leaving my mouth and going back down to my chest as I managed to stop before rear ending someone. |
Modern road surfaces are difficult for the land anchor to grip |
Good thing we're in the uk then |
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theFleured Lifetime member
Joined: 11 Jul 2012 Posts: 1810 Location: Newbury
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Posted: Fri Apr 19, 2013 16:16 Post subject: |
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_________________
"The thing about quotes on the internet is that you cannot confirm their validity." - Abraham Lincoln |
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freddread123
Joined: 01 Nov 2012 Posts: 205 Location: North Wales
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Posted: Fri Apr 19, 2013 21:40 Post subject: clunk on brakes L300 |
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I had the same 5 years ago on my L300 tracked my clunk down to the pads moving very quickly ,on application in the direction of the disc " very evident when in four wheel drive --off the ground , and in gear , and brakes applied hard " only a mil or so but with that force , makes a defo clink " looked like a worn caliper where it meets the pad on the lugs " so made tiny inserts , out of spring metal to absorb this movement, after i had done all that realised i could have just welded a bit on the lug of the pad and grinded to an exact fit " !! either way job done , might be worth looking at " ??? |
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andyman
Joined: 08 Dec 2012 Posts: 5602 Location: Penrith
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Posted: Fri Apr 19, 2013 23:54 Post subject: |
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My 1991 L300 doesn't make this clonk. Is it significant that it is too early to have an anti-roll bar? And no, they never had ABS - it's something else to get full of mud on an off-roader and give you a light on the dash that fails the MoT! _________________ Andy C L300 Super Exceed - over 100 smiles per gallon! |
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