Turbo cutting out

[Archie.leonmk3]

Hi guys, not sure if any of you have more knowledge than me, or the local garages in my area. I’ve gone to a few with no avail. I’ve had my car “seat Leon mk3 184bhp 2013 2.0tdi” for a while now and had no issues. Suddenly. When my car gets to operating temp “85-90” my turbo cuts out. From turning the car on up until 85-90 the car feels completely fine, no lag in the turbo making me believe the turbo is fine, not loss in power before 85-90 making me believe it isn’t a boost pipe. I’m at a loss with this and if anyone can help save me from the torment and the hassle of finding out what it is through going to garages nonstop thatd be great.

thanks

 

[Compo1]

Have these garages scanned for fault codes ?

Always the first step.

 

[Archie.leonmk3]

Have these garages scanned for fault codes ?

Always the first step.

Yes that’s the bizarre problem no codes show for the garages, I had a code for P2456 when I scanned it on obd, but nothing shows for them

 

[cairus]

make recording trip with should and is boost pressure

 

[SuperV8]

Can you explain the problem in more detail?
Is it a sudden power cut - or a gradual fade in power?
Why do you think its the turbo?

Crank sensor can cause sudden power cut:

2.0 tdi FR engine is occasionally cutting out for a fraction of a second and needs a bit of turning over to start half the time. No fault codes.

Cheers guys. Had a look at the pins and all seems good. Can it have an intermittent fault without throwing a code? Will look to replace asap

www.seatcupra.net

 

[Archie.leonmk3]

Can you explain the problem in more detail?
Is it a sudden power cut - or a gradual fade in power?
Why do you think its the turbo?

Crank sensor can cause sudden power cut:

2.0 tdi FR engine is occasionally cutting out for a fraction of a second and needs a bit of turning over to start half the time. No fault codes.

Cheers guys. Had a look at the pins and all seems good. Can it have an intermittent fault without throwing a code? Will look to replace asap

www.seatcupra.net

The car is working fine until it hits operating temp and all the turbo power goes, the car has a air intake so you can hear the turbo soon as it hits 85-90 the turbo noises disappear and so does all the power

 

[Archie.leonmk3]

Yes that’s the bizarre problem no codes show for the garages, I had a code for P2456 when I scanned it on obd, but nothing shows for them

The car is working fine until it hits operating temp and all the turbo power goes, the car has a air intake so you can hear the turbo soon as it hits 85-90 the turbo noises disappear and so does all the power

ill give the crankshaft sensor a go tomorrow hopefully that works if not got it booked into a vw specialist for Monday

 

[nd-photo.nl]

@SuperV8 I had a crank sensor issue on my Golf 3 GTI, once the engine warmed up it just stalled Waited for a little bit to cool off, then it would start again and run again...

 

[Archie.leonmk3]

@SuperV8 I had a crank sensor issue on my Golf 3 GTI, once the engine warmed up it just stalled Waited for a little bit to cool off, then it would start again and run again...

Mine still runs but the power just cuts out I’ve ordered the crankshaft sensor and the dpf sensor as I’ve seen that these both can cause this problem

 

[nd-photo.nl]

That sounds more like limp mode right?

 

[Archie.leonmk3]

That sounds more like limp mode right?

Yeah but no lights on dash no codes on ready nothing pulls through happens soon as I hit operating temp

 

[nd-photo.nl]

Are you able to see oil & coolant temps when it happens?

 

[Archie.leonmk3]

Are you able to see oil & coolant temps when it happens?

Yes seems to cut out around 80-85 coolant 80-90 oil

 

[cairus]

How should and is boost pressure behave in the event of a fault?

 

[Archie.leonmk3]

How should and is boost pressure behave in the event of a fault?

Before the car cuts out the boost is completely normal after there is no boost at all

 

[nd-photo.nl]

Yes seems to cut out around 80-85 coolant 80-90 oil

Ok that seems totally normal. I was thinking of a safety measure before things started overheating, but we can rule that out so it seems

 

[Archie.leonmk3]

Yeah it’s super annoying, bought the crankshaft sensor and dpf sensor will fit them and hopefully that fixes it, if not it’s booked into for a VW specialist

 

[cairus]

You misunderstand me. The vehicle calculates the boost pressure the turbo should produce. The turbo measures the actual boost pressure. Have you ever recorded these parameters during a drive?

 

[Archie.leonmk3]

No, how would I do this would a OBD scanned whilst driving be able to produce the figures ?

 

[nd-photo.nl]

With a proper computer/software like VCDS or an Autel you should be able to log this. What @cairus means is that the car requests a certain boost and the turbo tries to delivers that boost. Those 2 values should ideally be very close to each other. If there is a big discrepancy, then something is wrong (for instance boost leak etc)