Loss Of Power

[gerryh]

Hi all i own a 05 galaxy 1.9 tdi auto. and every now and then it just looses power and im unable to get over 80 kph.But if i turn off and restart again its fine. Its not all the time but i am afraid it will happen when im overtaking sometime. All info would be great thanx.

[Mirez]

Do some searches for "Sticking turbo", "Limp Home Mode" and "Turbo vanes" - all should be explained :angry:

 

... or if you can't be bothered, warm her up well and then give it a bit of a thrashing. :angry2:

[gregers]

as mirez has said,ITAILIAN TUNE UP. :angry2:

 

just wondered if it might be the maf playing up?

[johnoconnor]

Hi all i own a 05 galaxy 1.9 tdi auto. and every now and then it just looses power and im unable to get over 80 kph.But if i turn off and restart again its fine. Its not all the time but i am afraid it will happen when im overtaking sometime. All info would be great thanx.

Hi gerryh,

My '03 115TDi was doing the same thing occasionally. Apparently the Turbo Boost is controlled by an adjustable vane mechanism which is prone to sticking if the car is doing a lot of light work - town driving etc. Other members with similar problems suggest giving the engine a "good workout". This advice seem to have worked for me. No recent issues.

[gerryh]

:blink:

Hi all i own a 05 galaxy 1.9 tdi auto. and every now and then it just looses power and im unable to get over 80 kph.But if i turn off and restart again its fine. Its not all the time but i am afraid it will happen when im overtaking sometime. All info would be great thanx.

Hi gerryh,

My '03 115TDi was doing the same thing occasionally. Apparently the Turbo Boost is controlled by an adjustable vane mechanism which is prone to sticking if the car is doing a lot of light work - town driving etc. Other members with similar problems suggest giving the engine a "good workout". This advice seem to have worked for me. No recent issues.

Well John anytime it happens I try fiooring it but no joy allthat seems to happen is lossof fuel :D but i must look in to turbo problems thanks let u no if i get it fixed

[gerryh]

as mirez has said,ITAILIAN TUNE UP. :blink:

 

just wondered if it might be the maf playing up?

well gregers as Im new to this is this tune up ur talking about just to floor it if yes have tried it but no joy.Is the maf a sensor on air intake ? A guy told me if i dont let car idle for while after driving it could draw up oil into air intake and choke up sensor.

[gerryh]

Do some searches for "Sticking turbo", "Limp Home Mode" and "Turbo vanes" - all should be explained :blink:

 

... or if you can't be bothered, warm her up well and then give it a bit of a thrashing. :D

Thanks mirez must look into this

[Mirez]

as mirez has said,ITAILIAN TUNE UP. :blink:

 

just wondered if it might be the maf playing up?

well gregers as Im new to this is this tune up ur talking about just to floor it if yes have tried it but no joy.Is the maf a sensor on air intake ? A guy told me if i dont let car idle for while after driving it could draw up oil into air intake and choke up sensor.

 

 

You want the engine oil nice and warm and then the idea is to work/heat the turbo more then normal and therefore burn off excess carbon sooting up the vanes. You need to work the car quite hard by taking it near the red line a number of times, ideally holding it up there for a few seconds. Repeat this 4 or 5 times - you may notice some smoke from the exhaust which is normal as its the crud thats stuck on your vanes! It'll be even better to do it on a long run where the car can get to operating temperature and stay there for a prolonged period - motorway speeds would be best as you can leave it in 4th for a short while to maintain the revs without overly stressing the car.

 

Remember you need to do all this whilst the car is in normal operating mode and not in limp home mode, so if it enters LHM whilst you're doing it you need to restart the car and then carry on.

 

The MAF is the first sensor on the air intake after the airbox - it's not possible to draw oil onto that sensor as its not on the recirc path - I can't overly think what your guy is refering to - its wise to let the car idle for a short while after a long journey or after 'spirited' driving to allow the oil around the turbo to circulate and you should NEVER turn a turbo engine off with the revs at anything but idle speed.

Edited April 19, 2009 by Mirez