When i start up my 2009 1.8 TSI this allmost allways happen (video). I dont know what it can be. It cannot be something with the throttle body, because that is just changed because the old one was defective, but it was like this before it was replaced too. 

 

The car is also a bit strange when i drive it, when i release the gas pedal a bit and then push it again its shakes a bit in the car. Also when i start in 1st. gear and you feel the resistance from the engine it repeats two times, and that is not normal i think.

 

Known problem for someone?

 

 

https://streamable.com/7ujpm

 

 

Can it mabye be the sparkplugs or coil? 

I had something similar years ago on a Cavalier Sri, surging and as you say. when I let the foot off the throttle and on again it used to hesitate until it sort of sorted itself out

tried all sorts but turned out to be the hose between air filter housing  and inlet manifold, split on the underside causing it to suck to much air due the the engine rocking when starting and accelerating 

Worth a check

Edited 26 October, 20178 yr by Snapper1725

5 hours ago, Snapper1725 said:

turned out to be the hose between air filter housing  and inlet manifold, split on the underside causing it to suck to much air due the the engine rocking when starting and accelerating 

 

Good idea - I had the same on a petrol BMW a few years back. There was a small leak between the MAF and the inlet manifold. In my case, the engine bay would warm up and the hose would seal itself until the next cold start. 

@95mathias This is callled HOSP or HSP phase, Bosch info here,  VAG TPI with details here, common for all TSI. This is double injection and retarded ignition to warm up catalytic convertor quickly, but not always. But, no sudden rev changes should occur as on your video.

 

By the way, is your engine code BZB or CDAA? Look at the sticker on the top timing cover for engine code and day od production. Both engines are in risk because of failed timing tensioner and elonged chain, this could affect the start too.

 

Concerning throttle body, it could be just bad connection, same as on CCZA engines same family as BZB or CDAA.

Technical product information 2021485_4 131108.pdf

Technical product information 2021485_4 131212.pdf

Edited 27 October, 20178 yr by rayx

Thanks for reply Snapper1725, TheRobinK and rayx. I can now start troubleshooting this problem, and i think i first will start with the easiest thing before i do something more advanced.

 

rayx my engine code is BZB 054435 and it was produced 23.05.08. For the trottle body it would be strange if there are bad connection, because it was recently replaced, because there was a fault code (stuck in open position).

I was out for a little drive earlier today, and when I release the accelerator it goes 1-2 seconds and i can feel the car is shaking a bit.

Sometimes i hear a little noise too, sounds like that something is loose, but i can only hear it right after i release the accelerator. I also feel that there is a bit much exhaust when the car is idling, even if it's warm.

1 hour ago, 95mathias said:

I was out for a little drive earlier today, and when I release the accelerator it goes 1-2 seconds and i can feel the car is shaking a bit.

Sometimes i hear a little noise too, sounds like that something is loose, but i can only hear it right after i release the accelerator. I also feel that there is a bit much exhaust when the car is idling, even if it's warm.

 

Er -it's not the Dual Mass Fywheel  is it?

13 hours ago, 95mathias said:

rayx my engine code is BZB 054435 and it was produced 23.05.08. For the trottle body it would be strange if there are bad connection, because it was recently replaced, because there was a fault code (stuck in open position).

 

Throttle body replaced, but have they done anything with the connector on cable harness??? I guess not so the pins inside of it are in what condition???

 

The little noise, when can you hear it, at start or when iddling? Best to check with open bonnet with engine cover taken off. How much is the chain elonged can be checked with diagnostics, at motor measured values, group 93 field 3, OK up to -2, when -2 to -4, it needs checking through inspection hole on bottom cover how much is the tensioner released or straight new parts = tensioner + chain. But nothing can check the tensioner, the only way is to dissmantle timing group on engine. That tensioner is timed bomb on all 1,8/2,0 TSI engines EA888 family up to March 2012 when "K" tensioner was introduced...

 

9 hours ago, bigjohn said:

 

Er -it's not the Dual Mass Fywheel  is it?

I really don't hope that. But most often if it's the dual mass flywheel you would hear a noise rattle sound when starting up the engine and when its idling.

1 hour ago, rayx said:

 

Throttle body replaced, but have they done anything with the connector on cable harness??? I guess not so the pins inside of it are in what condition???

 

The little noise, when can you hear it, at start or when iddling? Best to check with open bonnet with engine cover taken off. How much is the chain elonged can be checked with diagnostics, at motor measured values, group 93 field 3, OK up to -2, when -2 to -4, it needs checking through inspection hole on bottom cover how much is the tensioner released or straight new parts = tensioner + chain. But nothing can check the tensioner, the only way is to dissmantle timing group on engine. That tensioner is timed bomb on all 1,8/2,0 TSI engines EA888 family up to March 2012 when "K" tensioner was introduced...

 

Thanks for the reply. I am not sure which condition the pins are in, but i will try to check it out and also take a new autoscan with VCDS that i have. I cannot hear any unusual noise when i start it up and when its idling. But i will try to have a closer look at this, and check it with diagnostics.

Do you think that the "K" tensioner will fit on a BZB engine? i looked a bit in this thread, but i did not find anything with installing a "K" tensioner on a BZB as i could see.

26 minutes ago, 95mathias said:

I really don't hope that. But most often if it's the dual mass flywheel you would hear a noise rattle sound when starting up the engine and when its idling.

 

Is yours manual or auto?

 

If manual and it's the DPF the rattle/noise usually goes or changes when you press the clutch down. But noise on idling - possibly - depends on how it's failed

 

It's hopefully not the DPF - but it's the "Sometimes i hear a little noise too, sounds like that something is loose" bit that I wondered about. A DPF is a double flywheel containing lots of cogs and springs - what could possibly go wrong

 

 

Edited 30 October, 20178 yr by bigjohn

It is a 6 speed manual. Lets hope that its just a small problem that is easy to fix. But i will try to do some more research and have a closer look at different things.

Hmm, i think i have to talk with the workshop again. I got this faultcode yesterday when i took an autoscan with VCDS. This part was recently replaced so mabye it's something with the cable harness.

 

Address 01: Engine (   )       Labels: 06J-907-115-BZB.clb
   Part No SW: 3T0 907 115     HW: 1Z0 907 115 B
   Component: 1.8l R4/4V TFSI     0030  
   Revision: A2H12---    Serial number:               
   Coding: 0203000318070160
   Shop #: WSC 35110 377 00999
   VCID: 6ED415FA790C45310B-803A

1 Fault Found:
008196 - Intake Manifold Flap; Bank 1 
               P2004 - 000 - Stuck Open
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 113825 km
                    Time Indication: 0
                    Date: 2012.03.22
                    Time: 16:58:51

             Freeze Frame:
                    RPM: 1048 /min
                    Load: 46.6 %
                    Speed: 0.0 km/h
                    Temperature: 19.0°C
                    Temperature: 6.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

Readiness: 0110 0101

Edited 31 October, 20178 yr by 95mathias

Well, this points at manifold flaps inside intake manifold, either its G366 sensor or overlimit gap on the shaft or even broken arm from the vacum actuator. Throttle body or its harness has nothing to do with this error. Yes, this can affect the starts very much too.

Technical Service Bulletin 2031075_1.pdf

Technical product information 2025038_4.pdf

Technical product information 2022476_4.pdf

 

Yes, K tensioner used on all GEN1 (as BZB) and GEN2 (CDAA, CCZA etc). Seems no problem with current one, likely originaly fitted N tensioner on your car so far, but I do not trust personaly in those old tensioners used up to March 2012, so still recommend replacing it.

Edited 1 November, 20178 yr by rayx

Thanks for usefull information. Do you know with generation i have of the BZB engine? the enginecode is BZB 054435. I think i remember that i have read that the gen 1 BZB was used from 2006-2008.

Edited 1 November, 20178 yr by 95mathias

On 10/30/2017 at 09:36, 95mathias said:

I really don't hope that. But most often if it's the dual mass flywheel you would hear a noise rattle sound when starting up the engine and when its idling.

 

If you listen really hard, you may hear a very slight clatter when you declutch and up/downshift, as the flywheel is momentarily released. AFAIK, you won't normally hear anything when you start the engine or it is idling.   

When I speak about GEN1 or GEN2, I mean engine family E888, not the car type. BZB on SuperbII used according workshop manual from March 2008 till May 2009. BZB is always the same, otherwise engine would have other code. See evolution chart at link below

 

4 hours ago, numskull said:

 

If you listen really hard, you may hear a very slight clatter when you declutch and up/downshift, as the flywheel is momentarily released. AFAIK, you won't normally hear anything when you start the engine or it is idling.   

 

Er - The one I heard mad a horrible clatter at idle with clutch out (spanners in the engine type sound) - quiet when clutch in. DMF was really cream crackered though

 

However sounds like it's the inlet manifold flaps.

Edited 1 November, 20178 yr by bigjohn

On 1.11.2017 at 07:18, rayx said:

Well, this points at manifold flaps inside intake manifold, either its G366 sensor or overlimit gap on the shaft or even broken arm from the vacum actuator. Throttle body or its harness has nothing to do with this error. Yes, this can affect the starts very much too.

Technical Service Bulletin 2031075_1.pdf

Technical product information 2025038_4.pdf

Technical product information 2022476_4.pdf

 

Yes, K tensioner used on all GEN1 (as BZB) and GEN2 (CDAA, CCZA etc). Seems no problem with current one, likely originaly fitted N tensioner on your car so far, but I do not trust personaly in those old tensioners used up to March 2012, so still recommend replacing it.

When there are problems with the manifold flaps etc, is it sometimes it uses more petrol than normal? Because i feel that it use a bit more petrol then it should do.

I reckon yes, the flaps influence how much air and how get into cylinders, when they are stuck or at other than signalized position, this must have a negative influence on petrol consumption.

Hi guys, I had a similar problem with my 2008 superb mk2

on a cold start I had missfires and engine shaking, and until the engine wast getting to 90 degrees the acceleration was shaking and sometimes strange metal sounds from the intake manifold area 

 

I had this problems for almost one year, with 3 visits to the dealership and other various shops with no results 

 

just now a mecanic from my home country found the problem: carbon build up on the intake valves, 

 

he cleaned them and now the car is briliant, no more missfires, no more shaking, the engine has more power and is quiter and even the consumsion is lover

Those dealers are rubbish! The carbon built-up problem with these engines is very old and well-known. Here on the other side of the north-sea we already have specialist companies who can clean the intake manifold chemically or mechanically.

Mine was cleaned chemically around 30.000 km, and I plan to have it cleaned mechanically (with walnut shell blasting) somewhere around 100.000 to 120.000 km.