 | Home > Puma (Tdci) > Diesel knock at constant speed... |
 
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If I accelerate suddenly, the sound is normal, it's only when you give gently throttle.....
| fekete Member Since: 24 Dec 2008 Location: Here on the other end of the computer Posts: 3626   
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Hi and welcome puma90,
Not sure what your problem is but someone on here will 
maybe you need the new soft ware update q068v2 NEVER TAKE LIFE SERIOUSLY. NOBODY GETS OUT ALIVE ANYWAY |
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2nd Oct 2009 8:04pm |
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| puma 90 Member Since: 02 Oct 2009 Location: botswana Posts: 17 
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don't think it is the update....went on holiday and after coming back, drove 5000Km, the noise was much much stornger then before we left for the holiday... Maybe software update can help, but I have the feeling the fuel system is not like it should be?
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2nd Oct 2009 8:22pm |
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| fekete Member Since: 24 Dec 2008 Location: Here on the other end of the computer Posts: 3626
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Take it back to the dealer and tell them to take it for a test drive with you
tell them your not happy and worried about breaking down. it could be  in the fuel NEVER TAKE LIFE SERIOUSLY. NOBODY GETS OUT ALIVE ANYWAYLast edited by fekete on 3rd Oct 2009 11:28am. Edited 1 time in total |
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2nd Oct 2009 8:31pm |
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| puma 90 Member Since: 02 Oct 2009 Location: botswana Posts: 17
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they made a test drive this week, but whitout me...
collected my car today, have full believe in the dealer, they did/do a great job, no complains, but this issue seems to be something difficult. Maybe I'm wrong....  Anyway, will go back to them beginning of November, have to drive almost 400Km to South Africa..it's worth, but not every week 
Go to bed, collected my car today, drove 10hours.... Chat later |
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2nd Oct 2009 8:41pm |
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| fekete Member Since: 24 Dec 2008 Location: Here on the other end of the computer Posts: 3626
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I hope you sort it puma90
NEVER TAKE LIFE SERIOUSLY. NOBODY GETS OUT ALIVE ANYWAY |
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2nd Oct 2009 8:44pm |
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| parktag Member Since: 30 Sep 2008 Location: Brittany Posts: 366  
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Hi puma 90
I noticed a while ago that my engine does this as well. Sticking to a low rev, constant speed with a very very light throttle the sound coming from the engine is a little rough. Then with a tiny bit more throttle it runs nice and smooth. I'm not overly worried about it but i'll check with the dealer at the next service. Up until now my engine has been faultless. 130 crew cab 98 V8 Disco |
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3rd Oct 2009 1:44am |
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| puma 90 Member Since: 02 Oct 2009 Location: botswana Posts: 17
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Morning parktag
Indeed, that's it!!!  Happy to find someone who recognizes, how many milage do you have?
My engine started to make the funny noise when I had 15000Km, then one morning incredible noise/knocking  and the engine stopped running: replacement of high pressure pump.
After the replacement, everything looked ok, but not perfect. I changed dealer, from Botswana to Johannesburg. At around 25000Km, the problem, let's call it, "low rpm and little throttle" started. After doing "the diagnostics" via the ecu at the dealer they noticed a small pressure fluctuation in the common rail: common rail replaced. The diagnostics program did not give an error, but the dealer was not happy with the pressure fluctuations. After the replacement, sound was better than ever!! Today, the noise is much more prone then before but you need to know at which rpm you have to look. 
I will be at the dealer first week of november, latest first week of december, will have a look with them together, they didn't noticed anything wrong last week. There is a knocking noise, they admit, but they tell me, like many dealers in Africa, the noise is because of poor diesel quality in Africa.... I cannot believe this, BMW, Mercedes, Land Rover Sports, VW, Audi and all kind of diesels do run fine, why not LR??
As soon as I have news about it from my dealer  I will let everyone know  |
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3rd Oct 2009 6:28am |
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| dm_td5 Member Since: 20 Jul 2008 Location: Arnhem Land Posts: 609  
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Is it a kind of thack, thack, thack noise? I get this occasionally when driving for the last two weeks and also when I turn the engine off. The dealer I last went to thought it may be related to the electronic waste gate on the turbo. They couldn't find anything else. 110 2.4TDCi
110 300Tdi 
LROCV ::: AULRO.com |
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3rd Oct 2009 7:35am |
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| puma 90 Member Since: 02 Oct 2009 Location: botswana Posts: 17
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hi dm td5,
yes it does a kind of thack, thack noise but only at rpm between 1500 and 2000, contstant speed and then you have to give very gently a bit of throttle. When you accelerate suddenly everything sounds perfect normal. When I switch of the engine everything is normal,no thacking noises... I suspect one of the injectors is faulty... |
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3rd Oct 2009 8:31am |
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| Cannonball Member Since: 19 Jun 2009 Location: Co Laois Posts: 150  
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Had a similar issue since new but maybe not so severe. Had software patch Q062v2 installed yesterday resulting in much reduced "knocking" between 1500-2000rpm as you describe, smoother mid range driving and a general improvement in driveability. More than pleased with the overall result.
Hopefully it will sort your problem. |
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3rd Oct 2009 11:20am |
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| puma 90 Member Since: 02 Oct 2009 Location: botswana Posts: 17
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Hi Cannonbal
...hmmmm....will call my dealer tomorrow and check if they did the update with my car last week
Still, it stays a bit funny he, why the engine sounds perfect when brand new and after 30000 km, 35000km today the engine sounds different... 
I love the car, the way it drives and it's performance, but the fuel system reallllly sucks according to my experience..
Maybe I should make a campfire and offer a sacrifice, ie a few cruisers  to the Defender holly spirits |
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3rd Oct 2009 1:28pm |
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| Chuggaboom Member Since: 24 Apr 2009 Location: Lancashire Posts: 34
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Hi Puma90
I have a similar issue, its booked into the dealers this week i'll post the info when they look at it. |
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3rd Oct 2009 5:36pm |
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| jlerra Member Since: 10 Jul 2009 Location: Gibraltar/London Posts: 149  
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Hi All,
I drove down from Bilbao (Spain) through to Gibraltar and took 10 hours. The truck went like a dream and returning 32 mpg even through torrential rain in the north of Spain! The reason I mention this is that not all comments on Defender 2.net are about complaints. A great drive was had and looking forward to crossing the 'straits of Gibraltar' to Morocco for a fun drive in the autumn. Come on guys - the Pume is great as not everyone has problems and unusual noises. May be we are a bit over sensitive as to the running of the vehicle. Drive and enjoy! Temperature in this part of the world (Gibraltar) 26-30 degrees. I gather you are all wet and cold in UK Regards to all, jlerra 'El Pepe Flamenco'  JLS
'El Pepe Flamenco' |
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4th Oct 2009 2:46pm |
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6133 
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Slightly off topic, JLerra, have you heard of the Gibraltar 4x4 club? <----- clicky We're a friendly bunch of wierdo's!  |
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4th Oct 2009 3:59pm |
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