Hello guys.

 

I own Skoda Octavia, 1.9tdi, 77kw, year 2008. 

 

I used to drive "long" distances (about 100km to work and back), but now i've had another job for about a year and i only drive 14km to job and back.

 

About a month ago i wanted to push the car to its limits by driving fast up hill and not change gear until higher revs. At about 2800, it kinda shook and pushed back, and just didnt work anymore. I pushed gas, but it wouldn't work. I barely got the hill.

 

A friend told me to shut it off and try again in a minute. It worked again, but there was huge amount of black smoke coming from the exhaust pipe for quite a lot of time.

 

After that, i've gone up the same hill 4 times, and the same thing happened 3/4 times.

 

Any suggestions? Some friends are suggestin it may be something with lambda probe..or turbine might fail soon. The car has 290k km.

 

Thanks!

Sounds more like a gummed up turbo causing over boost and the car to drop into limp mode. Might be time for the Mr muscle treatment.

1 minute ago, Anddenton said:

Sounds more like a gummed up turbo causing over boost and the car to drop into limp mode. Might be time for the Mr muscle treatment.

mr muscle treatment as in..?

Do a search on here for Mr muscle, it's a well documented treatment involving squirting Mr muscle into the turbo from the exhaust side to dissolve the oil/carbon build up.

4 minutes ago, Anddenton said:

Do a search on here for Mr muscle, it's a well documented treatment involving squirting Mr muscle into the turbo from the exhaust side to dissolve the oil/carbon build up.

thanks for the help!

Another alternative is forte diesel turbo cleaner + vpower and driving with a heavy foot. This helped on my mk1 TDI, but YMMV.

Edited 2 May, 20197 yr by bspman

@Anndenton

 

i just looked it up and it seems way too much / way too hard work for some1 that has absolutely zero experience working with cars.

 

@bspman

 

are you talking about something like that ?

 

Does this happen when the car is on a flat road but at the same revs? 

1 hour ago, penguin17 said:

Does this happen when the car is on a flat road but at the same revs? 

i don't usually take it over 2k on flat road. i usually change gear at 2k. haven't happened yet, but ill give it a try tomorrow

8 minutes ago, fokz8 said:

i don't usually take it over 2k on flat road. i usually change gear at 2k. haven't happened yet, but ill give it a try tomorrow

As you highlight the issue happens on this hill, I initially thought fuel starvation issue....fuel pump possibly. 

 

The turbo being gummed up (as above) is a good shout though. 

1 minute ago, penguin17 said:

As you highlight the issue happens on this hill, I initially thought fuel starvation issue....fuel pump possibly. 

 

The turbo being gummed up (as above) is a good shout though. 

Turbo being gummed up might be right in this case. It's been about a year at this job and i've barely managed to get car over 50-60km/h in this route because of the traffic. Every now and then i do more mileage but don't really do high revs anymore, therefore it could've gummed up.

1 hour ago, fokz8 said:

@Anndenton

 

i just looked it up and it seems way too much / way too hard work for some1 that has absolutely zero experience working with cars.

 

@bspman

 

are you talking about something like that ?

 

No,

it's a bottle that goes in your fuel tank.

 

Add some shell V-power and then drive in lower gears and higher revs.

 

This mostly sorted it for me, but to be honest with a drive like yours you're going to have troubles with sticky vanes regardless.

I had the same problem on my BKD, the oven cleaner treatment has "fixed" it for 12 months (I now make sure to put my foot down whenever I get a clear stretch of road to keep things clear).

 

I preferred the idea of using the oven cleaner as it's directly addressing the issue, the "in tank" additives require surviving the combustion process and cleaning the turbo on the way through, something that doesn't give me as much confidence.

for me, the forte threatment works fine so far.

 

I do this every year: 1 bottle of Forte Turbo cleaner (and 1 bottle Diesel threatment), fill the tank with V-power diesel (approx 75%) and drive it pretty aggresively (rev up to the red when the engine is warm). Usually I do this when I know I have some longer trips (and while on the German autobahn)

 

So far, I've never experienced limp mode. Still the original turbo (Car is now at 262k miles / 422k km).

 

If I remember correctly, you can also add a double dose, thus 2 bottles. 1 bottle is used for general maintenance, 2 can be used when you already have issues. 

 

If that doesn't help, you can always try the MrMuscle trick. 

 

I think the forte is more into preventive maintenance, and not really focussed on solving these issues. 2 bottles might work. The MrMuscle is more aggresive, so will do a better job. But adding 2 bottles to try is much easier, you still go for MrMuscle when that doesn't work

 

just tested some further and limp mode doesn't activate when on flat road and on 3k revs, but easily activates when at 2.5k revs and going uphill for about 30 secs.

 

also today, the "emissions workshop" sign just turned on and won't go away... :S

17 minutes ago, fokz8 said:

also today, the "emissions workshop" sign just turned on and won't go away

Well, the car thinks there is something "badly wrong". You need a fault code reader to work out what the reported issue is before we can help you further.

I would say that its a degraded vacuum pipe between the variable vane actuator and the control valve or less likely upstream between the valve and the vacuum pump, the heat generated is causing it to collapse internally.

 

I had the same problem on an old school Alhambra, happened on hills under wide open throttle, when towing a racecar on the trailer etc, the more the loading and ambient temperature the quicker it would occur, once well hot it would happen very quick and you knew it!

 

on that it was just a case of cycling the ignition switch, but if it had happened after say 30 seconds you would only get 15 more before a recurrence, then 5 seconds more etc etc on the same hill.

1 hour ago, KenONeill said:

Well, the car thinks there is something "badly wrong". You need a fault code reader to work out what the reported issue is before we can help you further.

 

indeed i do. hopefully i cant get some1 to do this for me because i don't have one.

 

pretty funny because i was thinking for a long time to sell this car and buy a new one, and now it seems to be giving up on me lol

53 minutes ago, fokz8 said:

 

pretty funny because i was thinking for a long time to sell this car and buy a new one, and now it seems to be giving up on me lol

 

Ugh oh.. you said it out loud in front of it didnt you... never say it in front of the vehicle...

9 minutes ago, mac11irl said:

 

Ugh oh.. you said it out loud in front of it didnt you... never say it in front of the vehicle...

 

you're so right. it's been over 2 years since i bought it, and not once it has let me down. first time i speak of buying new car, it decides to go on rampage :S

The engine in my insignia started eating itself after i mentioned changing it this year...

My mk1's turbo went shortly after mentioning selling it too.

at least i'm not alone in this

So. finally got a friend to do the test.

 

Here are the results.

 

https://imgur.com/9ABnudl

 

We've also tested it while driving, and the boost pressure goes up to 2560mbars. When it reaches 2570mb, it goes into limp mode.

 

Any ideas?

 

 

Edited 11 May, 20197 yr by fokz8

Sticky vanes... mr muscle that sucker