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#1 | ||
Starter Motor
Join Date: Apr 2017
Posts: 4
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Hi .. Intermittent concern. there is a knocking noise/thud thud thud noise, heard when I come to idle at signals/end of drive. This tends to occur when I drive a bit quickly and there are multiple occasions of braking quicker. As soon as I hear this noise when idling, I accelerate slowly and don't really rev too much. The noise disappears in sometime after I drive this way.
If I am at the end of my drive, I switch off the car and in about 5 mins, I restart the car and the noise is gone. However, if I restart the car within a minute or so, the noise can still be heard. What could be making this noise? Showed this to Ford Dealers and they couldn't replicate it nor could they find anything wrong. Help please.. ![]() |
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#2 | ||
Mad Scientist!
Join Date: Jan 2005
Location: Newcastle
Posts: 2,840
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It's not the DPF regeneration process?
Maybe take it on a freeway run to burn that DPF soot away.. |
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#3 | ||
Starter Motor
Join Date: Apr 2017
Posts: 4
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@ivorya
Definitely not DPF as I do a minimum of 20kms of freeway everyday. Hope its not the tranny ![]() |
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#4 | ||
Starter Motor
Join Date: Apr 2017
Posts: 4
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Loaded it on YouTube. link is: https://youtu.be/c-qs0naBGOw
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#5 | ||
Challenge Accepted!
Join Date: Jan 2006
Location: Under the Southern Cross
Posts: 882
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Dayum!!! that's weird. Forget Ford useless bunch on Euro's if you ask me. I'd start looking (read hearing) from within the engine bay and narrow down side/s it's coming from. Then try to narrow it down, like the aux drive belt or idlers/tensioner, then intake and exhaust systems, engine mounts before lastly going electrical (so obd2 adaptor) and looking at cylinder balance readings to rule out firing issues.
__________________
Undecided replacement... [SOLD] -2009 MB Mondeo Zetec TDCI- [SOLD] |
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#6 | |||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 805
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Quote:
What has doing 20km a day have to do with it? |
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#7 | ||
Challenge Accepted!
Join Date: Jan 2006
Location: Under the Southern Cross
Posts: 882
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In that its unlikely to be from dpf regen association.
__________________
Undecided replacement... [SOLD] -2009 MB Mondeo Zetec TDCI- [SOLD] |
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#8 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 805
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I've noticed it twice during DPF regen at idle.
Maybe caused by fuel injection to the exhaust? Mere surmise: https://buddwilkins.wordpress.com/20...ious-man-2009/ Last edited by rondeo; 16-05-2017 at 06:19 PM. Reason: addition |
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#9 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 805
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For example:
It's a fact Sounds like Looks like Seems like I think I'm sure I assume I wonder if Maybe Generally Surely Could be I suggest I know Knowing what I know now I've heard It's possible Certainly I guess I suspect It should be As far as I can tell It seems I remember I read Could be wrong but I'm no expert but It's definately I believe In my opinion I fear I find I've heard I've been told According to information It's probably I believe It must be I've learned The truth is Apparently I'm certain I wouldn't be surprised As far as I can work out I'm not sure, but I'm sure I'm fully convinced I can't imagine It's very simple I'm 100% certain Apparently I think you'll find My understanding is In fact |
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#10 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 805
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The Fuel vapourizer doing its thing?
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#11 | |||
FF.Com.Au Hardcore
Join Date: Oct 2005
Location: Auckland, NZ
Posts: 1,262
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Quote:
Sent from my SM-G9208 using Tapatalk
__________________
MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels. |
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#12 | ||
Starter Motor
Join Date: Apr 2017
Posts: 4
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#13 | ||
Regular Member
Join Date: Feb 2016
Location: Goulburn NSW
Posts: 316
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I would check the crankshaft bolt as a matter of urgency. There is a history of the bolt coming loose which if left unchecked, can destroy the end of the crankshaft and if it comes off completely, can let the timing go and destroy the engine.
I believe there is a TSB at ford to tighten at each service. One of my work colleagues had this happen to his TDCi Zetec at about 48,000km (3k after a Ford service) which resulted in a new engine at his cost (out of warranty)
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2012 MC Mondeo LX TDCi Wagon - Highway Hack 392K km and counting - Now gone 😢 2008 Peugeot 308 HDi - Highway Hack II 2008 Citroen C4 HDi - Highway Hack III 2010 Peugeot 308 HDi SW - Shaggin Wagon II 2016 VDJ200R Landcruiser GX Wagon - TTD V8 Power ![]() 2017 Toyota RAV4 GX Wagon - Shopping trolley - Gone 2022 Volvo XC40 T4 Inscription - Shopping trolley II 2002 BMW R1150GS |
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#14 | ||
Mad Scientist!
Join Date: Jan 2005
Location: Newcastle
Posts: 2,840
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It's sounds like my Kuga TDCi when it goes into DFF Regen.
Usually, instant fuel will read 0.5L idle but when this noise is occurring, it's up to 1.2-1.5L. Very Interesting!! |
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