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Discussion Starter #1
Hi, I recently purchased a 2008 159 1.9jtdm which has since collection had an issue no one has yet been able to diagnose and rectify. Symptoms are as below:

• If car is fully cold (ie stood overnight etc) starting is no problem (it actually seems to start quicker if outside air temp is lower)
• When car is fully warmed up (90°C showing on dash) restart is again no problem.
• Starting is a problem when car has had a heat cycle, but is neither hot nor cold. Examples are after a cold start, drive ½ mile to shop and park up for a few minutes, or drive car until warm then leave to sit for 2-3 hours.
• When attempting a restart the engine spins over on the starter at what appears to be an acceptable pace, not suggesting poor battery or starter performance.
• Engine will continue to spin over and gradually begin bit by bit to “catch” (as in it seems like first one then two then three cylinders come into life before eventually starting to run normally on all four)
• Fuel consumption even with VERY careful motorway driving only just exceeds 30mpg. Average tends to be around 27mpg around town without traffic!

Car has so far had replaced all injectors and the engine coolant temp sensor, both made no difference. The supplying dealer's "diesel specialist" suggests next replacing the crank sensor, but I'm not convinced... Any better ideas, advice or suggestions greatly appreciated:)
 

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Should do better mpg than that my 2.4 does high 37_41 on a motorway if don,t boot it.
Could be a clogged up inlet manifold or dpf problems. Swirl flaps sticking. Many threads on here about all 3 issues. Where are you based, could probably do with connecting to a diag m/c. To check out if any fault codes have been logged. Or egr faults
 

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Hi Cenka,I have the same problem on my 2.4 ti sportswagon posted on here 3 days ago no replies surely no easy answer, fitted new egr solved a lack of power at low revs but not the starting one.If you get to the bottom of the problem please post the cure.
 

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Heard the crank sensor is often at fault with these issue.
I'd try blanking the EGR in the short term, a bit more O2 in the engine can only help/
 

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Discussion Starter #5
Car has been plugged to the diagnostics by two different garages. The supplying dealer first had it in at his local garage who suggested and fitted the injectors. When that failed it was a few weeks later taken to the dealers "diesel specialist" who they didn't use first time around as he is apparently more expensive and has a couple of weeks waiting list for appointments.
In fairness I did speak on the phone to the diesel guy and he came across as knowledgeable, he was the one who suggested the ECT (which I'd already ordered as I thought it might be the root) and if not then the crank sensor. The diesel guy assures me there are no fault codes and that everything like fuel pressure is within expected parameters.

Oh, and I'm West York's based..
 

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Discussion Starter #6
Update:
Today had the car into a local diesel specialist, who believes its a 90% chance the starter motor is at fault. The theory is:
In a morning, the car knows it's cold, so switches on glow plugs and delivers a good fuel mixture, hence the car starts fine. After a good run, when everything in the engine is hot, it starts easy as conditions are good due to residual heat. However; when the car knows its not fully cold, it doesn't initiate glow pugs, but also the engine isn't warm enough to provide ideal starting conditions. This is why if the starter is turning a bit on the slow side the vehicle will be difficult to start.

So... starter was swapped out today, I'll monitor and report back here on how I get on :)
 

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Discussion Starter #7
Well, a week in and I'd say its a 95% cure. Car now fires so much sooner, even though the old starter didn't sound particularly slow.
Only once all has the car spun over for a while, so I just swithched off and back on and it then started up fine. I guess its a monitor and see situation now :cool:
 

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Well, a week in and I'd say its a 95% cure. Car now fires so much sooner, even though the old starter didn't sound particularly slow.
Only once all has the car spun over for a while, so I just swithched off and back on and it then started up fine. I guess its a monitor and see situation now :cool:
have you fix your problem with starting ....i have similar problem and dont know what to do...
 

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Hi Cenka,I have the same problem on my 2.4 ti sportswagon posted on here 3 days ago no replies surely no easy answer, fitted new egr solved a lack of power at low revs but not the starting one.If you get to the bottom of the problem please post the cure.
have you solve the problem.i have also similar problem with starting mild warm ...
 

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Mine has been loads better since I fitted my inlet manifold with blanked swirl flaps.
There is some suggestion that the mapping on these engines is not good on starting , out of the factory.
A lot of people have reported much quicker and cleaner starting after a swirl flap removal and remap.
 

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Mine has been loads better since I fitted my inlet manifold with blanked swirl flaps.
There is some suggestion that the mapping on these engines is not good on starting , out of the factory.
A lot of people have reported much quicker and cleaner starting after a swirl flap removal and remap.
i removed dpf blanked egr remaped ,but car is not starting properly when mild warm(4-6 hours after last stoping engine)
when cold start or warm start it starts super
also run at my oppinion lot of diesel 10l per 100km when no ttraffic in the city (night driving on low revs)
 
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