Lacking Turbo

drumbold · 14-07-2006, 17:34

Don't know if any one can help, I've got a 1999 Octavia Estate 90bhp Manual TDi

All fine and happy till I knocked the oil sump. Now the turbo only starts to come in around 3500 rpm, not the usual 1900rpm as it used to. Engine has 150k on it. There is a pipe that connects to the back of the engine (top left if looking from above) and this is leaking oil. Spoken to the garage who say that due to mileage etc they would advise to just leave it be, as not worth what else might be damaged/broken if they start taking stuff to bits.

There is no smoke from the exhaust, no noise that would indicate turbo bearings gone or in pieces. The only noise (in addition to normal) is air escaping from (am guessing) the gasket.

I've heard there is an issue with MAF, but can't see how this would prevent the turbo from working, until 3500rpm.

Any help welcomed, can't really afford whole new turbo/engine and don't fancy doing the journey to parents (150miles) or in-laws(100miles) in the wifes Seat Arosa SDi!!!

Thanks

Dave

drumbold · 14-07-2006, 17:49

Being doing some digging and found this list

sticking turbo due to dirty oil; dirty or faulty mass airflow sensor; exhaust gas recircularion solenoid valve sticking open; wastegate valve actuator rod sticking; faulty throttle switches; faulty temperature sensor; loose or leaking brake servo pipe or turbo boost pipe from fuel pump to turbo; faulty ECU

Anyone know how I check for these?

Shouldn't be dirty oil and it gets a change every 5k

cheezemonkhai · 14-07-2006, 18:44

It isn't a sticking variable vane turbo, because the TDI 90 doesn't have the variable vane system used on the 110.

If it went wierd when you knocked it I would guess that a pipe has come loose, and that could also explain the air escaping noise.

***DGW*** · 14-07-2006, 19:16

Has the car been checked for fault codes?

drumbold · 16-07-2006, 18:13

Car hasn't been checked for faults yet, will get one of the guys at work with VAG-com to have a look.

Can anyone recommend a good workshop manual for the car - have been thinking about haynes, but was thinking more detailed. Also anyone have any pictures/diagrams of all the turbo bits on my engine

14-07-2006, 17:34	#1
drumbold Briskodian Join Date: Jun 2005 Location: Midlands UK Posts: 37 Thanks: 1 Thanked 0 Times in 0 Posts	Lacking Turbo Don't know if any one can help, I've got a 1999 Octavia Estate 90bhp Manual TDi All fine and happy till I knocked the oil sump. Now the turbo only starts to come in around 3500 rpm, not the usual 1900rpm as it used to. Engine has 150k on it. There is a pipe that connects to the back of the engine (top left if looking from above) and this is leaking oil. Spoken to the garage who say that due to mileage etc they would advise to just leave it be, as not worth what else might be damaged/broken if they start taking stuff to bits. There is no smoke from the exhaust, no noise that would indicate turbo bearings gone or in pieces. The only noise (in addition to normal) is air escaping from (am guessing) the gasket. I've heard there is an issue with MAF, but can't see how this would prevent the turbo from working, until 3500rpm. Any help welcomed, can't really afford whole new turbo/engine and don't fancy doing the journey to parents (150miles) or in-laws(100miles) in the wifes Seat Arosa SDi!!! Thanks Dave

14-07-2006, 17:49	#2
drumbold Briskodian Join Date: Jun 2005 Location: Midlands UK Posts: 37 Thanks: 1 Thanked 0 Times in 0 Posts	Re: Lacking Turbo Being doing some digging and found this list sticking turbo due to dirty oil; dirty or faulty mass airflow sensor; exhaust gas recircularion solenoid valve sticking open; wastegate valve actuator rod sticking; faulty throttle switches; faulty temperature sensor; loose or leaking brake servo pipe or turbo boost pipe from fuel pump to turbo; faulty ECU Anyone know how I check for these? Shouldn't be dirty oil and it gets a change every 5k

14-07-2006, 18:44	#3
cheezemonkhai Briskodian Join Date: Jan 2006 Posts: 15,478 Thanks: 106 Thanked 507 Times in 470 Posts	Re: Lacking Turbo It isn't a sticking variable vane turbo, because the TDI 90 doesn't have the variable vane system used on the 110. If it went wierd when you knocked it I would guess that a pipe has come loose, and that could also explain the air escaping noise. __________________ Cars make CO2 and trees absorb CO2. By driving your car you're feeding a tree and helping the environment.

14-07-2006, 19:16	#4
*DGW* BRISKODA Staff Join Date: Oct 2002 Location: Cambridgeshire Posts: 17,259 Thanks: 51 Thanked 197 Times in 149 Posts	Re: Lacking Turbo Has the car been checked for fault codes? __________________ Denis 2002 Octavia 1.8T 4X4 turbo Estate - rebreathed on by Jabba ... 31.93mpg 2007 Fabia vRS - CC, ESP and full leather trim by Seat Surgeons ...48.57 mpg...

16-07-2006, 18:13	#5
drumbold Briskodian Join Date: Jun 2005 Location: Midlands UK Posts: 37 Thanks: 1 Thanked 0 Times in 0 Posts	Re: Lacking Turbo Car hasn't been checked for faults yet, will get one of the guys at work with VAG-com to have a look. Can anyone recommend a good workshop manual for the car - have been thinking about haynes, but was thinking more detailed. Also anyone have any pictures/diagrams of all the turbo bits on my engine

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