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[Engine] ENGINE SURGING (Turbo woes)
#1
Sad 
A little while after I got my ’07 1.6HDI M59 70k van I was driving up a hill and the engines power started to surge and drop repeatedly. After I crested the hill it was still doing it so I dropped a gear and revved it hard for a while and it cleared. I worried about the turbo, or could it be water in the fuel, the egr valve etc. But as it quickly cleared I let it go. This has happened a couple of times since after some two years, generally on a hill and similarly gone away. Yesterday it happened again and has not cleared, this time it definitely feels like the dreaded turbo as the surging occurs at expected boost times. But why would it be a failing turbo when it had done the same thing briefly some two years ago and it cleared – I’m flummoxed!
I’ve got a P0299 ‘turbo under boost’ fault logged on obd, but as there is no unusual noise from the turbo I’m wondering if it’s a sensor problem or perhaps the waste gate solenoid. One interesting thing was that last weekend I was towing a heavy trailer up a hill and the power dipped. With the windows open I could hear a funny noise like turbo boost dumping, perhaps the ECU spinning up the turbo in response to a heavily pressed accelerator. This seemed to upset the power characteristics for the rest of the trip.
….Ohh for the simple days of proper diesels with no electronics!

Has anyone had any similar experiences resolved, or can point me to a relevant post, or has any idea as to which bit I should hit with the hammer!! ?
:thumbsup:
Confusedtudy: MK2 1.6HDi 75 short van '600' M59
'07, 80k
DV6B Engine
BE4-5L manual gearbox
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#2
I suspect you are correct re it being a waste gate problem - do a search as im sure others have had this problem.

When did you last change your filters air and fuel?
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#3
Had similar problem, but dealer's ecu update seems to have cured it .
Former 2011 Mk3 XTR owner Confusedalut:
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#4
It doesnt sound like a complete failure-A guy I dealt with had a eurodiesel in his ford -the turbo failed outright at speed and he said it was like biggles bieng shot down -a plume of vapour and almost total power failure .
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#5
PO299 was one of codes displayed on my car.....ecu update seems to have resolved it, even though they blame bad fuel.
http://www.berlingoforum.co.uk/showthread.php?tid=5761
http://www.berlingoforum.co.uk/showthread.php?tid=5118
Former 2011 Mk3 XTR owner Confusedalut:
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#6
:thumbsup: Thanks for the replies and sorry for late response.

I'm going to have to spend a bit of time searching for potential suspects in the forums etc. this weekend Sad
Had a couple of casual suggestions thus far: Turbo Housing Resonator - don't know what that is or if I've even got one! Waste Gate Solenoid Actuator - not found that yet! Air Flow Sensor, again yet to be discovered.

Not sure about ECU updates either, guess that would require a trip to the local dodgydealership where they will first try to sell me a new van, then a replacement engine and if frustrated that far then a new turbo at least, or just a general mugging in the back office! Hence I like to try to fix things myself.

Guess I have a fairly unique problem - lucky me!!
Confusedtudy: MK2 1.6HDi 75 short van '600' M59
'07, 80k
DV6B Engine
BE4-5L manual gearbox
Reply
#7
Need a bit of advice!

I've looked at the turbo fan (just took the inlet pipe off). The fan seems ok but it does move a bit if you wobble the fan axle - is that normal?

I checked my injectors for leakage (non and bolts are tight) then dropped the vacuum pump off and the gauze looks spotless so I'm hoping the turbo is ok oil wise. I've yet to check the waste gate control and inlet pressure sensor, but at least I know where it all is now!

One other question, if I remove the gauze from the turbo oil inlet banjo as often recommended, will I need to do some kind of priming procedure?

Any help will be greatly appreciated.
Confusedtudy: MK2 1.6HDi 75 short van '600' M59
'07, 80k
DV6B Engine
BE4-5L manual gearbox
Reply
#8
There should be a small amount of play in the turbo spindle - this allows the oil to lubricate the bush, it runs on an oil bearing due to the high rpm of the turbo.

You should not have to prime the turbo but as always let the engine idle for 30 seconds before revving it to make sure oil is lubricating the turbo.
[+] 1 user says Thank You to polar for this post
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#9
(29-07-2013, 07:18 PM)polar Wrote:  There should be a small amount of play in the turbo spindle - this allows the oil to lubricate the bush, it runs on an oil bearing due to the high rpm of the turbo.

You should not have to prime the turbo but as always let the engine idle for 30 seconds before revving it to make sure oil is lubricating the turbo.

Cheers Polar, I feel a lot happier about that.....much appreciated :thumbsup:
Confusedtudy: MK2 1.6HDi 75 short van '600' M59
'07, 80k
DV6B Engine
BE4-5L manual gearbox
Reply


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