Hearing some horror stories regarding turbo failure on DAF MX engines , resulting in some cases in expensive engine rebuilds , anyone out there any comments to make ?.
the earlier MX engine did have a dodgy turbo issue, Daf have sorted this issue in a couple of ways, they now fit a titanium turbo to all new vehicles, and they are retrofitting them to the earlier vehicles
they have also fitted a sensor to detect the possibility of turbo failure, and will throw a warning on the dashboard, if the warning comes up, STOP immediately
Just a minor correction shutlespanker…Daf neveractually fitted a sensor to specifically pick up the turbo failing…They just tweaked the software , so that the boost pressure sensor ,that dispays what your boost pressure is on the DIP panel ,now, should give you the warning that you mentioned…So far I have not seen a failed titanium bladed turbo,only time 1 will have failed is if the induction system has not been cleaned properly after a previous repair…
As to the original poster ,yes repair can be expensive ,though it is down to how quick the driver reacts to the initial warning on the DIP …which is really all down to where he is when it happens ie 2nd lane of motorway ,where it will be difficult to just stop compared to lane 1…
Best idea is to check if the vehicle has the latest titanium bladed turbo…If not then use it as a haggling tool as I recommend you it a titanium turbo
Hi
There is an article in this weeks Commercial Motor about this subject
have heard that aswell. problem doesent seem to be dumping oil in the exhaust, NEALRY all the time the turbos go and not stopped very quickly does major damage to no 6 cyl. ( this was from a recovery company that did the towing for DAF)
norb:
Just a minor correction shutlespanker…Daf neveractually fitted a sensor to specifically pick up the turbo failing…They just tweaked the software , so that the boost pressure sensor ,that dispays what your boost pressure is on the DIP panel ,now, should give you the warning that you mentioned…So far I have not seen a failed titanium bladed turbo,only time 1 will have failed is if the induction system has not been cleaned properly after a previous repair…As to the original poster ,yes repair can be expensive ,though it is down to how quick the driver reacts to the initial warning on the DIP …which is really all down to where he is when it happens ie 2nd lane of motorway ,where it will be difficult to just stop compared to lane 1…
Best idea is to check if the vehicle has the latest titanium bladed turbo…If not then use it as a haggling tool as I recommend you it a titanium turbo
my local dealer lied to me (non shock) 
OOOPS 
norb:
OOOPS
mind you, it doesn’t really bother me, as my DAF still has the XE engine in it 
Guess the cracked cylinder heads weren’t that bad afterall
norb:
Just a minor correction shutlespanker…Daf neveractually fitted a sensor to specifically pick up the turbo failing…They just tweaked the software , so that the boost pressure sensor ,that dispays what your boost pressure is on the DIP panel ,now, should give you the warning that you mentioned…So far I have not seen a failed titanium bladed turbo,only time 1 will have failed is if the induction system has not been cleaned properly after a previous repair…
I think that “tweak” is at the root of the problems I’ve been seeing all week. After a few miles on the Motorway, I get “Engine Warning” and “Stop”. Daf fitter could find nothing wrong, but his diagnostic computer said the fault reported was low boost pressure (0.3 bar). The turbo was recently replaced by Daf anyway (presumably one with the titanium innards), and it also has a new boost sensor. Hopefully it will have been fixed over the weekend while it has been in the dealer’s workshop…
As an aside, she also clocked up 1,000,000km this week.
Did you get a new turbo because the old one failed ■■? If so did he remove the air filter ducting to check for impeller damage ■■ As I mentioned earlier the induction system after a failure has to be meticulously cleaned as any debri from the old unit will be sucked in to the new turbo …Or there may just be a loose clamp somewhere
It’s not totally clear - the thing was on temporary loan to another depot when the turbo was replaced, but I think it was done by DAF as a recall. Anyway the fitter who came out to me covered all those bases. He was confident that boost pressure was not actually low at all. I’m hoping it will have been fixed over the weekend.
norb:
Guess the cracked cylinder heads weren’t that bad afterall
never had a problem with a cracked cylinder head that has resulted in the need for replacement
i know that there is a small crack on the rear of the head where the bolt hole is, but, as long as it is not more than an inch, it is fine
not saying that the XE engine is perfect, because, we both know, it isn’t
but, i still think it is stronger engine than the MX engine
shuttlespanker:
norb:
Guess the cracked cylinder heads weren’t that bad afterallnever had a problem with a cracked cylinder head that has resulted in the need for replacement
i know that there is a small crack on the rear of the head where the bolt hole is, but, as long as it is not more than an inch, it is fine
not saying that the XE engine is perfect, because, we both know, it isn’t
but, i still think it is stronger engine than the MX engine
Both Engines have had their issues,early camshaft issues being one that they both had.The XE then had it’s cylinder head cracks ,which you are obviously well aware of …The MX has really only had the turbo issue,which technically isn’t part of the main block /cyl head assy …Just a pity it has taken so long to get it right It has now been modified for Euro 6 ,and with VTG turbos the jury is out at the moment,as so far so good …In fact the Euro6 has been a bit of a surprise so far ,beING better than what many of us thought it would be with such huge changes …Has been way better than what Euro 5 was
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Is it doing that
Is it doing that
Fortunately not! The only symptoms I’m seeing are the warning lights and the screeching of the alarm. First time it happened I made my way straight to the hard shoulder, fearing that the thing was about to expire. It didn’t, so I (gingerly) restarted the engine - it ran perfectly. So I resumed my journey, only for the same thing to happen a few miles later. This time I wasn’t so hasty making for the hard shoulder, but stopped anyway. Again it was running normally and restarted perfectly. So I resumed my journey only for the same to happen again about 6 miles further on. As I was only a couple of miles from Keele services, I carried on and parked up there to phone in for advice/assistance. Fitter came out from Stoke, and checked the turbo, air filter, catalytic convertor, air ducting etc but could find nothing wrong (although the diagnostic computer said the fault reported was low boost pressure). So after a few more calls, the company made the decision that it would be booked in with local dealer but it was safe for me to continue. Each time I get the warning/alarm, I stop when convenient to switch off/restart, which kills the alarms. Fortunately it only happens on steady speed running on the Motorway, so depending on how long I can put up with the alarm shrieking at me (longest I’ve managed so far was an hour and a half…) it doesn’t disrupt my journey significantly. Just waiting for them to actually fix it.
Was looking at a daf cf 6x2 56 plate 460 470,000 km pretty cheap from a big dealer, The truck froze last year but they said they will do the work to it.I phoned daf to explain this and they said it should be ok.What to do lol.